{"title":"Mercury 40 CARB (3 CYL.)(4-STROKE) (1C018826 \u0026 Up) Parts \u0026 Diagrams","description":"\u003cp\u003eOEM and aftermarket replacement parts for Mercury 40 CARB (3 CYL.)(4-STROKE). Scroll down for exploded parts diagrams (33), specifications, and maintenance reference.\u003c\/p\u003e","products":[{"product_id":"fuel-pump-for-mercury-25-60-hp-892874t01","title":"881862T1 Fuel Pump Assembly for Mercury Mariner 25HP 30HP 40HP 45HP 50HP 55HP 60HP | JLM Marine","description":"\u003ch2\u003eFuel Pump Assembly – Fits Mercury Mariner 4-Stroke 25HP 30HP 40HP 45HP 50HP 55HP 60HP Outboard Engines\u003c\/h2\u003e\n\n\u003cp\u003eThis fuel pump assembly is engineered to fit \u003cstrong\u003eMercury Mariner 4-Stroke outboard engines ranging from 25HP to 60HP\u003c\/strong\u003e, providing reliable fuel delivery for consistent engine performance. Designed for 3-cylinder configurations, this assembly ensures proper fuel flow for your marine outboard motor.\u003c\/p\u003e\n\n\u003cp\u003eDirect replacement for OEM part numbers \u003cstrong\u003e881862T1, 881862T07, 892874T, 899106T, and 8M0141844\u003c\/strong\u003e, offering a cost-effective aftermarket solution without sacrificing quality or reliability.\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003eIncludes fuel pump assembly, 3 cable ties for secure installation\u003c\/li\u003e\n \u003cli\u003eCompatible with Mercury Mariner 4-Stroke 25HP, 30HP, and 40HP 3-cylinder outboard engines\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This pump features two hose connectors on one side—verify configuration against your original part\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e881862T1\u003c\/td\u003e\n \u003ctd\u003ePrimary OEM reference\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e881862T 1\u003c\/td\u003e\n \u003ctd\u003eAlternate format\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e881862T07\u003c\/td\u003e\n \u003ctd\u003eCross-reference\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e892874T\u003c\/td\u003e\n \u003ctd\u003eCross-reference\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e899106T\u003c\/td\u003e\n \u003ctd\u003eCross-reference\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e8M0141844\u003c\/td\u003e\n \u003ctd\u003eCross-reference\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Mariner\u003c\/td\u003e\n \u003ctd\u003e4-Stroke Outboard\u003c\/td\u003e\n \u003ctd\u003e25HP\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eOil Fuel Pump\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Mariner\u003c\/td\u003e\n \u003ctd\u003e4-Stroke 3 CYL Outboard\u003c\/td\u003e\n \u003ctd\u003e30HP\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eOil Fuel Pump\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Mariner\u003c\/td\u003e\n \u003ctd\u003e4-Stroke 3 CYL Outboard\u003c\/td\u003e\n \u003ctd\u003e40HP\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eOil Fuel Pump\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e4-Stroke Outboard\u003c\/td\u003e\n \u003ctd\u003e45HP\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eBoat Engine\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e4-Stroke Outboard\u003c\/td\u003e\n \u003ctd\u003e50HP\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eBoat Engine\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e4-Stroke Outboard\u003c\/td\u003e\n \u003ctd\u003e55HP\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eBoat Engine\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e4-Stroke Outboard\u003c\/td\u003e\n \u003ctd\u003e60HP\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eBoat Engine\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eSpecification\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOEM Part Number\u003c\/td\u003e\n \u003ctd\u003e881862T1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eEngine Type\u003c\/td\u003e\n \u003ctd\u003e4-Stroke Outboard\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompatible HP Range\u003c\/td\u003e\n \u003ctd\u003e25HP, 30HP, 40HP, 45HP, 50HP, 55HP, 60HP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCylinder Configuration\u003c\/td\u003e\n \u003ctd\u003e3 Cylinder (applicable models)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHose Connector Configuration\u003c\/td\u003e\n \u003ctd\u003eTwo connectors on one side\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003e\u003cstrong\u003e1 × Fuel Pump Assembly\u003c\/strong\u003e\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e3 × Cable Ties\u003c\/strong\u003e (for secure hose connections)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Verify the hose connector configuration—this pump has two hose connectors on one side. Compare with your original part before installation.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n \u003cli\u003e\n\u003cstrong\u003eSafety First:\u003c\/strong\u003e Disconnect the battery and ensure the fuel system is depressurized before beginning work.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAccess the Fuel Pump:\u003c\/strong\u003e Locate the existing fuel pump assembly on your outboard engine. You may need to remove cowling or access panels.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDisconnect Fuel Lines:\u003c\/strong\u003e Carefully disconnect the fuel inlet and outlet hoses from the old pump, noting their positions and orientation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemove Electrical Connections:\u003c\/strong\u003e Unplug any electrical connectors attached to the fuel pump.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUnbolt the Old Pump:\u003c\/strong\u003e Remove the mounting bolts securing the fuel pump to the engine block and carefully extract the old assembly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInspect Mounting Surface:\u003c\/strong\u003e Clean the mounting area and inspect for debris, corrosion, or damage. Replace gaskets if needed.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePosition the New Pump:\u003c\/strong\u003e Align the new fuel pump assembly with the mounting holes, ensuring the two-hose-connector side matches your configuration.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSecure with Bolts:\u003c\/strong\u003e Install and torque the mounting bolts to manufacturer specifications in a cross-pattern sequence.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReconnect Fuel Lines:\u003c\/strong\u003e Attach the fuel inlet and outlet hoses to the correct ports on the new pump. Use the included cable ties to secure connections.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReconnect Electrical:\u003c\/strong\u003e Plug in all electrical connectors, ensuring a firm and complete connection.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTest for Leaks:\u003c\/strong\u003e Reconnect the battery, prime the fuel system, and inspect all connections for fuel leaks before starting the engine.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRun Test:\u003c\/strong\u003e Start the engine and verify smooth operation, proper fuel delivery, and no abnormal sounds or leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this fuel pump fits my Mercury engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Check your engine's serial number and horsepower rating against the compatibility table above. This pump fits Mercury Mariner 4-stroke engines from 25HP to 60HP, particularly 3-cylinder models. If unsure, provide your engine serial number to verify fitment before purchasing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between this pump and the 21FP005 model?\u003c\/strong\u003e\u003cbr\u003e\nA: While both may appear similar, the key difference is the hose connector configuration. This 881862T1 pump has two hose connectors on one side, whereas other models may have different layouts. Always compare the connector orientation and number with your original part to ensure proper fitment.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my outboard fuel pump?\u003c\/strong\u003e\u003cbr\u003e\nA: Fuel pump replacement intervals vary based on usage and fuel quality. Typical signs that replacement is needed include difficulty starting, engine sputtering or stalling, loss of power at high RPM, or visible fuel leaks. Most manufacturers recommend inspection every 100-200 hours of operation or annually.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are common signs that my fuel pump is failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Watch for these symptoms: engine struggling to start, inconsistent idling, sudden power loss during operation, engine misfiring or hesitation, whining or buzzing noises from the pump area, or fuel smell\/visible leaks around the pump assembly. If you experience any of these, inspect or replace the fuel pump promptly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: OEM vs. Aftermarket?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":49444246585657,"sku":"21FP004","price":46.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/JLM21FP004-1_70ea77c1-1f88-4663-afe3-81a90983f693.jpg?v=1755138891"},{"product_id":"water-pump-impeller-kit-for-mercury-30-40-50-60-70-hp-46-812966a12","title":"Water Pump Impeller Kit – Fits Mercury\/Mariner 4-Stroke 30-70 HP (Replaces 46-812966A12)","description":"\u003ch2\u003eWater Pump Impeller Kit – Fits Mercury\/Mariner 4-Stroke 30-70 HP (Replaces 46-812966A12)\u003c\/h2\u003e\n\u003cp\u003eThis water pump impeller kit provides a complete solution for servicing the cooling system on Mercury\/Mariner 4-Stroke 30, 40, 50, 60, and 70 HP outboard engines (1991 and newer models).\u003c\/p\u003e\n\u003cp\u003eIt is engineered to serve as a direct replacement for Mercury\/Quicksilver part numbers 46-812966A12, 46-812966A11, and 46-812966A10, as well as aftermarket equivalents from Sierra, GLM Marine, and others.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes the impeller, housing, base, gaskets, plate, and all necessary hardware for a full replacement.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect Fit:\u003c\/strong\u003e Designed as a direct replacement for the original equipment manufacturer (OEM) part for a straightforward installation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCritical Maintenance:\u003c\/strong\u003e Essential for maintaining engine cooling system integrity, preventing overheating and ensuring long-term engine health.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Quicksilver\u003c\/td\u003e\n \u003ctd\u003e46-812966A12, 46-812966A11, 46-812966A10, 46-14334A3, 46-14334A2, 46-14334A1, 46-812966A6, 46-812966A5, 46-812966A4\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-3690\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM Marine\u003c\/td\u003e\n \u003ctd\u003e12124\/12095\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSEI Marine\u003c\/td\u003e\n \u003ctd\u003e96-265-01BK\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e30\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991 and newer\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003eSerial No. 0T409000 through 1B355222 and 1C000001 \u0026amp; above\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003e4-Stroke (3 Cyl)\u003c\/td\u003e\n \u003ctd\u003e30\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003eEFI\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003e4-Stroke (3 Cyl)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003eCARB and EFI models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003e4-Stroke (4 Cyl)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003eEFI and JET models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003e4-Stroke (4 Cyl)\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003eEFI models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003e4-Stroke (3 Cyl)\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003eEFI and Bigfoot models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003e4-Stroke (4 Cyl)\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003eEFI models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003eFormula\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003eS\/N 1C104574 \u0026amp; UP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eSeaPro\u003c\/td\u003e\n \u003ctd\u003e40-60\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003eJET\u003c\/td\u003e\n \u003ctd\u003e35-45\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eForce\u003c\/td\u003e\n \u003ctd\u003eOutboard\u003c\/td\u003e\n \u003ctd\u003e70\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991-1995\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003eSerial 0E000001 through 0E138599\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eForce\u003c\/td\u003e\n \u003ctd\u003eOutboard\u003c\/td\u003e\n \u003ctd\u003e75\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1996-1998\u003c\/td\u003e\n \u003ctd\u003e46-812966A12\u003c\/td\u003e\n \u003ctd\u003eSerial 0E288000 through 0E344999, 0E138600 through 0E202999, 0E203000 through 0E287999\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eSpecification\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eWater Pump Impeller Kit with Housing\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eDirect OEM Replacement\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eFuel Type\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eGasoline\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eOther Technical Attributes\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eComplete kit with housing for outboard cooling system\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e1 x Impeller (47-19453T)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e1 x Base (46-812966A7)\u003c\/li\u003e\n \u003cli\u003e1 x Guide tube\/Coupler (859770\/859770-1\/893857)\u003c\/li\u003e\n \u003cli\u003e1 x Impeller Key\u003c\/li\u003e\n \u003cli\u003e1 x O-Ring\u003c\/li\u003e\n \u003cli\u003e1 x Washer (12-858234)\u003c\/li\u003e\n \u003cli\u003e1 x Plate (19700A2)\u003c\/li\u003e\n \u003cli\u003e1 x Gasket Upper (27-822189)\u003c\/li\u003e\n \u003cli\u003e1 x Gasket Lower (27-19701)\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e1 x Housing\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eExplosion Diagram\u003c\/h2\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/46-812966A12.png?v=1729734689\" alt=\"Explosion Diagram\" loading=\"lazy\"\u003e\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the negative battery cable and remove the engine Cowling.\u003c\/li\u003e\n \u003cli\u003eShift the outboard into forward gear to simplify driveshaft re-engagement later.\u003c\/li\u003e\n \u003cli\u003eRemove the bolts securing the lower unit (gearcase) to the engine's midsection and carefully lower it.\u003c\/li\u003e\n \u003cli\u003eUnscrew the bolts on the water pump housing and lift the housing off the driveshaft.\u003c\/li\u003e\n \u003cli\u003eRemove the old impeller, key, wear plate, and gaskets. Thoroughly clean all mating surfaces, removing any old gasket material or debris.\u003c\/li\u003e\n \u003cli\u003eInstall the new lower gasket and wear plate onto the gearcase.\u003c\/li\u003e\n \u003cli\u003eInsert the new impeller key into the slot on the driveshaft.\u003c\/li\u003e\n \u003cli\u003eApply a thin layer of marine grease or soap-water solution to the new impeller and the inside of the new housing.\u003c\/li\u003e\n \u003cli\u003eSlide the new impeller onto the driveshaft while turning the shaft clockwise to correctly orient the vanes.\u003c\/li\u003e\n \u003cli\u003ePlace the new housing and upper gasket over the impeller and secure it with the bolts, tightening them to the torque specified in your service manual.\u003c\/li\u003e\n \u003cli\u003eReinstall the lower unit, ensuring the driveshaft, shift shaft, and water tube are properly aligned. Secure with the mounting bolts.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery. Start the engine using a water supply (flushing muffs) and confirm a steady stream of water from the tell-tale port.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this kit fits my Mercury engine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis kit fits most Mercury and Mariner 4-stroke outboards from 30 to 70 HP (1991 and newer). The best way to confirm is by checking your engine's serial number against the ranges listed in our compatible models table. Cross-referencing your old part number with our list (e.g., 46-812966A12) is also a reliable verification method.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the signs that my water pump impeller needs replacement?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCommon symptoms of a failing impeller include a weak or non-existent water stream from the tell-tale outlet, the engine overheating alarm sounding, or discovering cracked, brittle, or deformed rubber vanes during a visual inspection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I replace the water pump impeller?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor preventative maintenance, we recommend inspecting the impeller annually and replacing it every 1-2 years or every 100-200 hours of engine use. If you frequently operate in shallow, sandy, or debris-filled water, more frequent replacement is advised.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the housing included in this kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, this is a complete water pump service kit that includes the impeller, the pump housing, a new wear plate, all necessary gaskets, and required hardware for a full overhaul.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOEM vs. Aftermarket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow fast do you ship and how much does it cost?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is your warranty and return policy?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":49490516279609,"sku":"19KM004","price":96.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Water_Pump_Impeller_Kit_for_Mercury_4-Stroke_30_40_50_60_70_HP___46-812966A12_-_JLM_MARINE-8286350.jpg?v=1755400265"},{"product_id":"lower-unit-non-magnetic-oil-plug-for-mercury-mariner-outboard-and-mercruiser-sterndrive-79953q04","title":"Gearcase Drain Plug – Fits Mercury\/MerCruiser Marine Engines (Replaces 10-79953Q04, 79953Q04)","description":"\n\u003ch2\u003eGearcase Drain Plug – Fits Mercury\/MerCruiser Marine Engines (Replaces 10-79953Q04, 79953Q04)\u003c\/h2\u003e\n\n\u003cp\u003eThis gearcase drain and fill plug is designed for a wide range of Mercury outboard engines, including 30-125 HP EFI models, and various MerCruiser sterndrive units. It serves as a crucial component for draining and refilling gearcase lubricant in the lower unit.\u003c\/p\u003e\n\n\u003cp\u003eThis part is a direct replacement for Mercury part numbers \u003cstrong\u003e10-79953Q04, 79953Q04, 10-79953A2, 10-79953Q2\u003c\/strong\u003e and Sierra part number \u003cstrong\u003e18-2244\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstallation Method:\u003c\/strong\u003e Simple threaded screw-in installation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Constructed from durable brass for corrosion resistance in marine environments.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eComplete Assembly:\u003c\/strong\u003e Includes the required sealing washer\/gasket for a leak-proof fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e10-79953Q04\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e79953Q04\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e10-79953A2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e10-79953Q2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-2244\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eEFI Outboards\u003c\/td\u003e\n \u003ctd\u003e30, 40, 75, 80, 90, 115, 125\u003c\/td\u003e\n \u003ctd\u003e3 Cyl EFI models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n \u003ctd\u003eVarious Sterndrive\/Outdrive\u003c\/td\u003e\n \u003ctd\u003eN\/A\u003c\/td\u003e\n \u003ctd\u003eUsed in gearcase\/lower unit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eSpecification\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eGearcase Drain\/Fill Plug\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eThreaded\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eLower Unit Gearcase\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eMetal (Brass)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eHousing Color\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eSilver\/Metallic\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eFitting Type\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eScrew with Gasket\/Seal\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eOther Technical Attributes\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eIncludes sealing washer\/gasket; used for both draining and filling gear oil in lower units\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Lower Unit Gear Lube Drain w\/Fill Hole Screw (79953Q04)\u003c\/li\u003e\n \u003cli\u003e1 x \u003cspan style=\"color:red;\"\u003eSeal\/Gasket (included with assembly)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eLocate the gearcase drain\/fill plugs on the lower unit. There are typically two: an upper (vent) and a lower (drain).\u003c\/li\u003e\n \u003cli\u003ePosition a suitable drain pan underneath the lower plug.\u003c\/li\u003e\n \u003cli\u003eRemove the lower drain plug using a large flathead screwdriver, allowing the old gear lube to drain completely.\u003c\/li\u003e\n \u003cli\u003eRemove the upper vent plug to allow air to enter, which speeds up the draining process.\u003c\/li\u003e\n \u003cli\u003eInspect the old plugs and magnetic tips for any metal shavings, which can indicate excessive gear wear.\u003c\/li\u003e\n \u003cli\u003eClean the threads on the gearcase housing before installation.\u003c\/li\u003e\n \u003cli\u003eInstall the new drain plug with its gasket in the lower hole and tighten it securely, but do not overtighten.\u003c\/li\u003e\n \u003cli\u003eFill the gearcase with the manufacturer-specified lubricant through the upper vent hole until fluid begins to flow out.\u003c\/li\u003e\n \u003cli\u003eInstall the new upper vent plug with its gasket and tighten securely.\u003c\/li\u003e\n \u003cli\u003eClean any excess lubricant from the lower unit housing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this fits my engine?\u003c\/strong\u003e\u003cbr\u003e\nFirst, check your existing part for a part number and compare it to those listed in our cross-reference table. Second, review the compatible engine models table. For Mercury engines, use the provided \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e to confirm your model details.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this used for both draining and filling the gearcase?\u003c\/strong\u003e\u003cbr\u003e\nYes, this screw and seal assembly is used for both the lower drain hole and the upper vent\/fill hole on compatible Mercury and MerCruiser lower units.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the purpose of the included gasket?\u003c\/strong\u003e\u003cbr\u003e\nThe gasket (seal) is critical for preventing gear lube from leaking out and water from entering the gearcase. \u003cstrong\u003eAlways use a new gasket\u003c\/strong\u003e with each installation to ensure a proper seal.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOEM vs. Aftermarket?\u003c\/strong\u003e\u003cbr\u003e\nThis listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nWe offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nThis product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":49546754785593,"sku":"22GK033","price":21.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Lower_Unit_Non-Magnetic_Oil_Plug_for_Mercury_Mariner_Outboard_and_MerCruiser_Sterndrive_______79953Q04_-_JLM_MARINE-8287053.jpg?v=1755052041"},{"product_id":"water-pump-base-for-mercury-mariner-35-40-50-55-60-hp-and-force-70-75-hp-46-812966a7","title":"Water Pump Base – Fits Mercury\/Mariner 30-60 HP \u0026 Force 70-75 HP (Replaces 46-812966A7)","description":"\u003ch2\u003eWater Pump Base – Fits Mercury\/Mariner 30-60 HP \u0026amp; Force 70-75 HP (Replaces 46-812966A7)\u003c\/h2\u003e\n\u003cp\u003eThis water pump base is a direct replacement for various Mercury, Mariner, and Force outboard engines. It is designed for 3 \u0026amp; 4 cylinder models, both 2-Stroke and 4-Stroke, from 1991 and newer, covering a horsepower range of 30-75 HP depending on the brand.\u003c\/p\u003e\n\u003cp\u003eThis component directly replaces OEM part numbers, including Mercury \u003cstrong\u003e46-812966A7\u003c\/strong\u003e, \u003cstrong\u003e46-812966A9\u003c\/strong\u003e, and \u003cstrong\u003e46-81266A3\u003c\/strong\u003e, as well as aftermarket equivalents from Sierra, GLM, and Mallory.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eEngineered for a \u003cstrong\u003edirect OEM replacement\u003c\/strong\u003e fit.\u003c\/li\u003e\n \u003cli\u003eConstructed with a durable \u003cstrong\u003eStainless Steel\u003c\/strong\u003e housing.\u003c\/li\u003e\n \u003cli\u003eManufactured to meet or exceed OEM specifications for reliable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eSuperseded By\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e46-81266A3\u003c\/td\u003e\n \u003ctd\u003e46-812966A9\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e46-812966A9\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-3445\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e12352\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-43330\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eMercury\/Mariner\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e30 HP\u003c\/td\u003e\n \u003ctd\u003e30\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991-2006\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e35 HP\u003c\/td\u003e\n \u003ctd\u003e35\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991-2006\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e35 HP JET\u003c\/td\u003e\n \u003ctd\u003e35\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eAfter 1C453840\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 HP\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991-2006\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 HP EFI\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e2006-Up\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 HP (4-Stroke)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001-2012\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 HP EFI JET\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e1999-2010\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e45 HP JET\u003c\/td\u003e\n \u003ctd\u003e45\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e1991-2004\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e50 HP (3 Cyl)\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991-2006\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e50 HP EFI\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e2001-2012\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e55 HP (3 Cyl)\u003c\/td\u003e\n \u003ctd\u003e55\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991-2006\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e60 HP (3 Cyl)\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991-2006\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e60 HP EFI\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e2001-2012\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e60 HP BIGFOOT\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e1998-2006\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e60 HP SEAPRO\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003eAfter 1C453840\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eFORMULA 60\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eForce\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eForce\u003c\/td\u003e\n \u003ctd\u003e70 HP FORCE\u003c\/td\u003e\n \u003ctd\u003e70\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991-1995\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eForce\u003c\/td\u003e\n \u003ctd\u003e75 HP FORCE\u003c\/td\u003e\n \u003ctd\u003e75\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1996-1998\u003c\/td\u003e\n \u003ctd\u003e46-812966A7\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eSpecification\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eWater Pump Base\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eDirect OEM replacement\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eStainless Steel\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eOther Technical Attributes\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eManufactured to OEM specifications\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cp\u003e1 x Water Pump Base (\u003cspan style=\"color:red;\"\u003e46-812966A7\u003c\/span\u003e)\u003c\/p\u003e\n\n\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003e\n\u003cstrong\u003eDisconnect Power:\u003c\/strong\u003e Start by disconnecting the battery terminals to prevent any electrical accidents.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAccess Lower Unit:\u003c\/strong\u003e Remove the lower unit (gearcase) from the outboard motor. This typically involves removing several bolts connecting it to the midsection.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemove Pump Housing:\u003c\/strong\u003e Unbolt and carefully lift the water pump housing to expose the impeller and the pump base.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemove Old Base:\u003c\/strong\u003e Lift the old water pump base plate off the driveshaft and gearcase. Take note of any seals or gaskets underneath.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eClean Surfaces:\u003c\/strong\u003e Thoroughly clean the mounting surface on the gearcase where the new base will sit. Ensure it is free of old gasket material and corrosion.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstall New Base:\u003c\/strong\u003e Place the new water pump base into position, ensuring it is properly aligned with any guide pins or bolt holes.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReassemble Pump:\u003c\/strong\u003e Install a new impeller, key, and gaskets. Re-attach the water pump housing and torque the bolts to the manufacturer's specification.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRe-attach Lower Unit:\u003c\/strong\u003e Slide the lower unit back into place, ensuring the driveshaft and water tube align correctly. Secure it with the mounting bolts.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTest Operation:\u003c\/strong\u003e Reconnect the battery. Start the engine using a water source (flushing muffs or in water) and check the tell-tale outlet for a strong, steady stream of water.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How can I confirm this base fits my specific engine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Check your engine's model, year, and serial number against our compatibility tables. For Mercury models, you can use the provided serial number guide to verify your details. This base replaces OEM part number \u003cstrong\u003e46-812966A7\u003c\/strong\u003e and others listed in the cross-reference table.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs my water pump base needs replacement?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Common signs include engine overheating, a weak or inconsistent water stream from the tell-tale outlet, or visible cracks and corrosion on the existing base during a water pump service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should the water pump assembly, including the base, be inspected?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: It is recommended to inspect the entire water pump assembly, including the impeller, housing, and base, every 100 hours of operation or at least once a year, whichever comes first. Replace components that show wear or damage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: OEM vs. Aftermarket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":49547110842681,"sku":"2435","price":28.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Water_Pump_Base_for_Mercury_Mariner_35_40_50_55_60_HP_and_Force_70_75_HP________46-812966A7_-_JLM_MARINE-8287142.jpg?v=1755052027"},{"product_id":"drain-screw-gaskets-for-mercury-mariner-and-mercruiser-engines-26-830749","title":"Drain Screw Gasket - Fits Mercury\/Mercruiser Outboards \u0026 Sterndrives","description":"\u003ch2\u003eDrain Screw Gasket - Fits Mercury\/Mercruiser Outboards \u0026amp; Sterndrives (Replaces 26-830749, 26-8M0204693)\u003c\/h2\u003e\n\u003cp\u003eThis drain screw gasket is designed for a wide range of Mercury\/Mercruiser engines. It is compatible with outboard engines from 40 to 600 HP (2-Stroke \u0026amp; 4-Stroke, 1990–Present) and all models of sterndrive and inboard engines from 1994 to the present.\u003c\/p\u003e\n\u003cp\u003eThis part is a direct replacement for Mercury OEM part numbers \u003cstrong\u003e26-830749\u003c\/strong\u003e and \u003cstrong\u003e26-8M0204693\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMade from a durable, tear-resistant rubber-coated stainless steel washer.\u003c\/li\u003e\n\u003cli\u003eDesigned for use with \u003cstrong\u003e3\/8\"-16 drain\/fill screws\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eEnsures a proper seal to prevent gearcase lubricant leaks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eSuperseded By\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e26-830749\u003c\/td\u003e\n\u003ctd\u003e26-8M0204693\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eMercury\/Mercruiser Outboard Engines\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e40-50-60 EFI\u003c\/td\u003e\n\u003ctd\u003e40-60\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1C000001-1C050251\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e40-50-60 EFI\u003c\/td\u003e\n\u003ctd\u003e40-60\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1C050252-1C453839\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e40-50-60 EFI\u003c\/td\u003e\n\u003ctd\u003e40-60\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1C453840-Current\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e70-90 EFI\u003c\/td\u003e\n\u003ctd\u003e70-90\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2B095049-Current\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e75-90-115 Optimax\u003c\/td\u003e\n\u003ctd\u003e75-115\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1B417702-Current\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003eDFI Models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e115 EFI\u003c\/td\u003e\n\u003ctd\u003e115\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2B095049-Current\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e135-150-175-200 Verado\u003c\/td\u003e\n\u003ctd\u003e135-200\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e4-Cylinder models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-135 DFI\u003c\/td\u003e\n\u003ctd\u003e135\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1B417702-Up\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e2.5L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-150 DFI\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1B417702-Up\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e2.5L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-150 EFI\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1B227000-Up\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e2.5L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-175 DFI\u003c\/td\u003e\n\u003ctd\u003e175\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1B417702-Up\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e2.5L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-200 EFI\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1B227000-Up\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e2.5L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e175-300 V6 \u0026amp; V8\u003c\/td\u003e\n\u003ctd\u003e175-300\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e3.4L V6 \u0026amp; 4.6L V8 Torpedo \u0026amp; Torque Master\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e200-300 Verado\u003c\/td\u003e\n\u003ctd\u003e200-300\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll series\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e6-cylinder models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e250-300 V8 Racing\u003c\/td\u003e\n\u003ctd\u003e250-300\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003eSport Master, Torpedo \u0026amp; Torque Master\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e450 V8 Racing\u003c\/td\u003e\n\u003ctd\u003e450\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003eSport Master \u0026amp; Torpedo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eMercury\/Mercruiser Sterndrive \u0026amp; Inboard Engines\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One (Gen.II)\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996-1997\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e0F680000-0K999999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo One\/Two\/Three\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0W250000 \u0026amp; Up\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003eAll variants including X and XR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBravo XR Sportmaster\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0M906878 \u0026amp; Up\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eNXT1 Drive\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0M954569 \u0026amp; Up\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eSSM Six\/Seven\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eHI Performance Transom\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0W150003 \u0026amp; Up\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eINTEGRATED Transom\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0M052768 \u0026amp; Up\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eZeus 3000\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll Series\u003c\/td\u003e\n\u003ctd\u003e26-830749\/26-8M0204693\u003c\/td\u003e\n\u003ctd\u003eAll production ranges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDrain Screw Gasket\/Seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eUsed with 3\/8\"-16 drain\/fill screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eRubber-coated stainless steel washer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Color\u003c\/td\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitting Type\u003c\/td\u003e\n\u003ctd\u003eWasher\/Gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Size\u003c\/td\u003e\n\u003ctd\u003eFor 3\/8\"-16 drain screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther Technical Attributes\u003c\/td\u003e\n\u003ctd\u003eTear-resistant gearcase drain screw seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x \u003cspan style=\"color:red;\"\u003eDrain Screw Gasket (Replaces 26-8M0204693)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eExplosion Diagram\u003c\/h2\u003e\n\u003cimg src=\"https:\/\/storage.megazip.net\/catalog\/M\/b8f\/b8f92fc9b0718704b0401fdf44790295.png\" alt=\"Explosion Diagram\" loading=\"lazy\"\u003e\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003ePosition a drain pan under the gearcase drain screw.\u003c\/li\u003e\n\u003cli\u003eUsing a large flathead screwdriver, carefully loosen and remove the lower drain\/fill screw.\u003c\/li\u003e\n\u003cli\u003eInspect the old gasket on the magnetic tip of the screw for wear or damage and discard it.\u003c\/li\u003e\n\u003cli\u003eClean the screw and the gearcase sealing surface, ensuring they are free of old gasket material or debris.\u003c\/li\u003e\n\u003cli\u003eSlide the new yellow gasket onto the drain screw.\u003c\/li\u003e\n\u003cli\u003eReinstall the screw with the new gasket and tighten it until it is snug. \u003cstrong\u003eDo not overtighten.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eProceed with gear lube filling from the bottom hole as per your engine's service manual.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this gasket fits my specific Mercury engine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This gasket fits most Mercury\/Mercruiser outboards (40-600 HP, 1990-Present) and sterndrives (1994-Present). To be certain, please check the compatible engine model tables on this page or cross-reference your existing part number with \u003cstrong\u003e26-830749\u003c\/strong\u003e or \u003cstrong\u003e26-8M0204693\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between this yellow gasket and older black ones?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This yellow, rubber-coated stainless steel washer (26-8M0204693) directly replaces the older part number 26-830749. It is designed to be more tear-resistant and provide a superior seal for your gearcase.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my drain screw gasket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: It is best practice to replace the drain screw gaskets every time you change your gearcase lube, which is typically done annually or every 100 hours of operation, whichever comes first.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: OEM vs. Aftermarket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":49568085672249,"sku":"26-830749","price":18.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Drain_Screw_Gaskets_for_Mercury_Mariner_and_MerCruiser_Engines_26-830749_-_JLM_MARINE-8287479.jpg?v=1755051979"},{"product_id":"water-pump-impeller-for-mercury-30-60-hp-18-8900","title":"47-19453T Outboard Rubber Impeller with Key\/Pin for Mercury Mariner 4-Stroke 40HP 50HP 60HP | JLM Marine","description":"\u003ch2\u003e47-19453T Outboard Rubber Impeller with Key\/Pin for Mercury Mariner 4-Stroke 40HP 50HP 60HP | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis high-quality rubber impeller is designed to fit Mercury Mariner 4-stroke outboard engines ranging from 40HP to 60HP. Engineered for reliable cooling performance, this impeller ensures your engine operates at optimal temperatures across a wide range of applications including 3-cylinder and 4-cylinder configurations, both carbureted and EFI models.\u003c\/p\u003e\n\n\u003cp\u003eThis aftermarket impeller directly replaces OEM part number \u003cstrong\u003e47-19453T\u003c\/strong\u003e, providing a cost-effective solution without compromising performance. Compatible with multiple Mercury Mariner 4-stroke series, this impeller is built to meet OEM specifications for dependable service.\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003eComplete kit includes impeller, key, and pin for easy installation\u003c\/li\u003e\n \u003cli\u003eCompatible with both carbureted and EFI 4-stroke engines\u003c\/li\u003e\n \u003cli\u003eFits 3-cylinder and 4-cylinder Mercury Mariner models from 40HP to 60HP\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-19453T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 Carb (3Cyl)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 (4Cyl)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 EFI (4Cyl)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e50 EFI (4Cyl)\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e60 (4Cyl)\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e60 EFI (4Cyl)\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eSpecification\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOEM Part Number\u003c\/td\u003e\n \u003ctd\u003e47-19453T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApplication\u003c\/td\u003e\n \u003ctd\u003eMercury Mariner 4-Stroke Outboard Engines\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompatible HP Range\u003c\/td\u003e\n \u003ctd\u003e40HP, 50HP, 60HP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eEngine Type\u003c\/td\u003e\n \u003ctd\u003e4-Stroke (3-Cylinder and 4-Cylinder)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eFuel System\u003c\/td\u003e\n \u003ctd\u003eCarbureted and EFI\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Outboard Rubber Impeller\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Key\/Pin\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and remove the lower unit from the engine following your manufacturer's service manual.\u003c\/li\u003e\n \u003cli\u003eLocate and remove the water pump housing cover by unscrewing the retaining bolts.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old impeller from the pump housing. Note the direction of the impeller blades for proper installation.\u003c\/li\u003e\n \u003cli\u003eInspect the pump housing and plate for wear, corrosion, or damage; replace if necessary.\u003c\/li\u003e\n \u003cli\u003eLubricate the new impeller with glycerin or soapy water (never use petroleum-based lubricants). Do not use grease.\u003c\/li\u003e\n \u003cli\u003eInsert the key\/pin into the impeller shaft slot according to the orientation marked on your pump.\u003c\/li\u003e\n \u003cli\u003eInstall the new impeller into the housing, ensuring the blades face the correct rotation direction. Gently rotate to seat it fully.\u003c\/li\u003e\n \u003cli\u003eReinstall the pump housing cover and secure all bolts to the manufacturer's torque specifications.\u003c\/li\u003e\n \u003cli\u003eReattach the lower unit to the engine, ensuring all seals and gaskets are in good condition.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery and run the engine with water supply (using a test tank or flushing muffs) to verify proper water flow.\u003c\/li\u003e\n \u003cli\u003eCheck for leaks around the pump housing and ensure a steady stream from the tell-tale (pee hole).\u003c\/li\u003e\n \u003cli\u003eIf water flow is weak or absent, shut down immediately and recheck the installation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this impeller fits my Mercury Mariner engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine model and horsepower with the compatibility table above. You can also verify your engine's serial number using the Mercury Serial Number Guide linked in the Compatible Engine Models section, or check the exploded parts diagrams to confirm part number 47-19453T matches your water pump assembly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my outboard impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Most manufacturers recommend replacing the impeller annually or every 200–300 operating hours, whichever comes first. If you notice overheating, reduced water flow from the tell-tale, or visible cracks and missing blades during inspection, replace the impeller immediately regardless of usage time.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs of a failing impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include engine overheating, weak or no water discharge from the tell-tale hole, steam from the engine, or an abnormal high-temperature warning. Inspect your impeller if you experience any of these issues.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use grease to lubricate the impeller during installation?\u003c\/strong\u003e\u003cbr\u003e\nA: No, never use petroleum-based grease as it can damage the rubber. Use glycerin, soapy water, or a water-based lubricant specifically designed for impeller installation to protect the rubber and ensure smooth insertion.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between this aftermarket impeller and the OEM part?\u003c\/strong\u003e\u003cbr\u003e\nA: This aftermarket impeller is manufactured to OEM specifications using comparable-grade rubber compounds. It offers the same fit, form, and function as the original Mercury part 47-19453T but at a more competitive price point, making it a cost-effective replacement without sacrificing reliability.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM part or an aftermarket replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":49581546209593,"sku":"17IM004K","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Water_Pump_Impeller_for_Mercury_30-60_HP__18-8900_-_JLM_MARINE-8288074.jpg?v=1755013298"},{"product_id":"water-pump-impeller-for-mercury-40-50-60-pk-4-cylinder-efi-4-stroke-47-19453","title":"47-19453T Outboard Impeller for Mercury Mariner 40HP 50HP 60HP | JLM Marine","description":"\u003ch2\u003e47-19453T Outboard Impeller for Mercury Mariner 40HP 50HP 60HP | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis high-quality aftermarket impeller is engineered to fit Mercury Mariner 4-stroke outboard engines ranging from 40HP to 60HP, including both carbureted and EFI models across 3-cylinder and 4-cylinder configurations. Designed for reliable cooling system performance, this replacement ensures your engine operates at optimal temperatures during every outing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect OEM Replacement:\u003c\/strong\u003e 47-19453T\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003eFits Mercury Mariner 4-stroke 40HP, 50HP, and 60HP engines (3-cylinder and 4-cylinder)\u003c\/li\u003e\n \u003cli\u003eCompatible with both carbureted and EFI fuel systems\u003c\/li\u003e\n \u003cli\u003eEssential component for maintaining proper engine cooling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-19453T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 Carb (3Cyl)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 (4Cyl)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 EFI (4Cyl)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e50 EFI (4Cyl)\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e60 (4Cyl)\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e60 EFI (4Cyl)\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse;\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003e\u003cstrong\u003eValue\u003c\/strong\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOEM Part Number\u003c\/td\u003e\n \u003ctd\u003e47-19453T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApplication\u003c\/td\u003e\n \u003ctd\u003eOutboard Water Pump Impeller\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompatible Brand\u003c\/td\u003e\n \u003ctd\u003eMercury Mariner\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eEngine Type\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHorsepower Range\u003c\/td\u003e\n \u003ctd\u003e40HP, 50HP, 60HP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eYour order includes:\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Outboard Impeller\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n \u003cli\u003e\n\u003cstrong\u003eDisconnect the fuel line\u003c\/strong\u003e and remove the engine cowling to access the lower unit. Tilt the engine fully up and secure it in place.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDrain the gear oil\u003c\/strong\u003e from the lower unit by removing the drain and vent screws. Disconnect the water intake hose if necessary.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemove the lower unit\u003c\/strong\u003e by loosening the mounting bolts that secure it to the mid-section. Carefully slide the lower unit away from the drive shaft.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAccess the water pump housing\u003c\/strong\u003e by removing the bolts that hold the pump cover in place. Take note of the orientation of components for reassembly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemove the old impeller\u003c\/strong\u003e carefully, inspecting the housing and plate for wear, corrosion, or damage. Clean all surfaces thoroughly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLubricate the new impeller blades\u003c\/strong\u003e with a water-resistant marine grease or glycerin to ease installation and prevent tearing during initial startup.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstall the new impeller\u003c\/strong\u003e into the housing, ensuring the blades are oriented in the correct rotation direction (check your service manual). Use a twisting motion to seat it fully.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReassemble the water pump housing\u003c\/strong\u003e by replacing the pump plate, cover, and gaskets in reverse order. Torque all bolts to manufacturer specifications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReattach the lower unit\u003c\/strong\u003e to the mid-section, aligning the drive shaft and water tube carefully. Secure all mounting bolts and reconnect the water intake hose.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRefill the lower unit\u003c\/strong\u003e with fresh gear oil through the lower drain hole until it flows from the upper vent hole. Replace both screws securely.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReinstall the engine cowling\u003c\/strong\u003e and reconnect the fuel line. Run the engine in a test tank or on muffs to verify proper water flow from the tell-tale outlet.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCheck for leaks\u003c\/strong\u003e around the water pump housing and lower unit seals. Monitor engine temperature during the first few outings to confirm cooling system performance.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this impeller fits my Mercury Mariner engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine model with the compatibility table above. Check your original impeller or service manual for part number 47-19453T, and use the Mercury Serial Number Guide linked in the compatibility section to identify your exact engine model and year.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my outboard impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Most manufacturers recommend replacing your impeller annually or every 200–300 hours of operation, whichever comes first. If you frequently run in sandy or debris-filled water, inspect it more often and replace at the first sign of cracking, missing blades, or reduced flexibility.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my impeller is failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include weak or no water flow from the tell-tale (pee hole), engine overheating, steam from the cowling, or reduced performance. If you notice any of these, shut down immediately and inspect the impeller and cooling system.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this impeller in both carbureted and EFI models?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this impeller is designed to fit Mercury Mariner 4-stroke engines in both carbureted and EFI configurations across the 40HP, 50HP, and 60HP range, as listed in the compatibility table.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM or aftermarket impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":50488831181113,"sku":"17IM004","price":24.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/17IM0041_c8c4c0af-7ce4-47a0-ad6c-3a82683ca82e.jpg?v=1755252003"},{"product_id":"water-pump-impeller-kit-for-mercury-40-50-60-pk-4-cylinder-efi-4-stroke-47-19453q2-19453t3","title":"Water Pump Impeller – Fits Mercury 40\/50\/60 HP 4-Stroke EFI Outboards (Replaces 47-19453T)","description":"\u003ch2\u003eWater Pump Impeller – Fits Mercury 40\/50\/60 HP 4-Stroke EFI Outboards (Replaces 47-19453T)\u003c\/h2\u003e\n\u003cp\u003eThis water pump impeller is designed for \u003cstrong\u003eMercury\/Mariner 4-Stroke EFI outboards from 40 to 60 HP\u003c\/strong\u003e (4-cylinder models), covering years from the late 1990s through current production models.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for multiple OEM and aftermarket part numbers, ensuring a precise fit and restoring your engine's cooling system performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Direct Replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey Attribute:\u003c\/strong\u003e Features 6 blades for efficient water circulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for standard gearcases on specified Mercury \u0026amp; Mariner models\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e19453\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e19453T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMercury\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e47-19453T\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAftermarket\u003c\/td\u003e\n\u003ctd\u003eAMKITMER50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAftermarket\u003c\/td\u003e\n\u003ctd\u003eHJB-P-890\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4-Stroke EFI (4 Cyl)\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e47-19453T\u003c\/td\u003e\n\u003ctd\u003eStandard gearcase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4-Stroke Carb (3 Cyl)\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e47-19453T\u003c\/td\u003e\n\u003ctd\u003eStandard gearcase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4-Stroke (4 Cyl)\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e47-19453T\u003c\/td\u003e\n\u003ctd\u003eStandard gearcase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4-Stroke EFI (4 Cyl)\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e47-19453T\u003c\/td\u003e\n\u003ctd\u003eStandard gearcase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e47-19453T\u003c\/td\u003e\n\u003ctd\u003eStandard gearcase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4-Stroke EFI (4 Cyl)\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e47-19453T\u003c\/td\u003e\n\u003ctd\u003eStandard gearcase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4-Stroke (4 Cyl)\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e47-19453T\u003c\/td\u003e\n\u003ctd\u003eStandard gearcase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWater Pump Impeller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDrive Shaft Spline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(A) 19.25 mm x (B) 78.2 mm x (C) 25.15 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitting Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInternal Spline Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOther Technical Attributes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 Blades\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Water Pump Impeller (\u003cspan style=\"color:red;\"\u003eReplaces 47-19453T\u003c\/span\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the negative battery cable to prevent accidental starting.\u003c\/li\u003e\n\u003cli\u003ePlace the outboard's gear shift into the neutral position.\u003c\/li\u003e\n\u003cli\u003eRemove the bolts securing the lower unit (gearcase) to the upper leg of the outboard.\u003c\/li\u003e\n\u003cli\u003eCarefully lower and remove the gearcase from the engine.\u003c\/li\u003e\n\u003cli\u003eLocate and unbolt the water pump housing, which sits on top of the gearcase.\u003c\/li\u003e\n\u003cli\u003eNote the rotational direction of the old impeller's blades before removing it from the drive shaft.\u003c\/li\u003e\n\u003cli\u003eClean any debris or corrosion from the pump housing interior and base plate.\u003c\/li\u003e\n\u003cli\u003eLightly lubricate the new impeller and the inside of the housing with marine grease.\u003c\/li\u003e\n\u003cli\u003eSlide the new impeller onto the drive shaft, turning the shaft in its normal rotational direction (typically clockwise) to correctly seat the blades.\u003c\/li\u003e\n\u003cli\u003eReinstall the water pump housing and tighten its bolts to the manufacturer's specified torque.\u003c\/li\u003e\n\u003cli\u003eReattach the lower unit to the outboard, ensuring the drive shaft, shift shaft, and water tube are properly aligned.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery, start the engine, and confirm a steady stream of water from the cooling system's tell-tale outlet.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How can I confirm this impeller fits my Mercury engine?\u003c\/strong\u003e\u003cbr\u003e\nA: This impeller fits Mercury\/Mariner 40-60 HP 4-cylinder EFI outboards from the late 1990s onward. First, check the 'Compatible Engine Models' table on this page. For absolute certainty, use the Mercury Serial Number guide linked above to identify your exact model and then cross-reference the OEM part number (47-19453T).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my water pump impeller needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common signs of a failing impeller include the engine overheating, a weak or non-existent stream of water from the \"tell-tale\" outlet, or an unusually high engine temperature reading on your gauge.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the water pump impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: As a general maintenance rule, it's recommended to inspect and\/or replace the water pump impeller every 1-2 years or every 100-200 hours of operation, whichever comes first, to prevent overheating and engine damage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: OEM vs. Aftermarket?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":50488986272057,"sku":"24KM020","price":66.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/24KM0201_fb417927-8d92-48b5-a97c-c63ffb9c8095.jpg?v=1755252001"},{"product_id":"carburetor-repair-kit-for-yamaha-25hp-4-stroke-65w-w0093-11","title":"65W-W0093-11 Carburetor Repair Kit for Yamaha F25 T25 F30 F40 F40B | JLM Marine","description":"\u003ch2\u003eCarburetor Repair Kit – Fits Yamaha F25, T25, F30, F40, F40B Outboards\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive carburetor repair kit is engineered for \u003cstrong\u003eYamaha 4-stroke outboard engines\u003c\/strong\u003e including the F25, T25, F30, F40, and F40B models spanning 2000 to 2006 model years. Designed to restore your carburetor to factory performance, this kit addresses common wear points and fuel delivery issues in mid-range Yamaha outboards.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect replacement for OEM part number 65W-W0093-11.\u003c\/strong\u003e This kit supersedes and consolidates two previous Yamaha carburetor kits (65W-W0093-02-00 and 65W-W0093-00-00), providing comprehensive coverage across multiple production periods with all necessary gaskets, seals, valves, and hardware for a complete carburetor rebuild.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete rebuild solution with all essential gaskets, needle valves, floats, and hardware\u003c\/li\u003e\n\u003cli\u003eCovers both early production (pre-2004) and later models (2004-2006) with variant-specific components\u003c\/li\u003e\n\u003cli\u003ePrecision-manufactured to OEM specifications for reliable fuel metering and sealing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket sources.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e65W-W0093-11\u003c\/td\u003e\n\u003ctd\u003eOEM primary reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e65W-W0093-02-00\u003c\/td\u003e\n\u003ctd\u003eF25, T25 (04~04\/2006), F30, F40, F40B (00~)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e65W-W0093-00-00\u003c\/td\u003e\n\u003ctd\u003eF25, T25 (~03)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Yamaha owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-serial-number-guide-2025\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-parts-diagrams-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYAMAHA Marine\u003c\/td\u003e\n\u003ctd\u003eF25, T25\u003c\/td\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2004-2006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYAMAHA Marine\u003c\/td\u003e\n\u003ctd\u003eF30\u003c\/td\u003e\n\u003ctd\u003e30 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2000-Now\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYAMAHA Marine\u003c\/td\u003e\n\u003ctd\u003eF40, F40B\u003c\/td\u003e\n\u003ctd\u003e40 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2000-UP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e65W-W0093-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eCarburetor Repair\/Rebuild\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Brand\u003c\/td\u003e\n\u003ctd\u003eYamaha Marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003e4-Stroke Outboard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower Range\u003c\/td\u003e\n\u003ctd\u003e25-40 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis kit consolidates components for both early and late production models. \u003cspan style=\"color:red;\"\u003e\u003cstrong\u003eYour specific engine year determines which components apply\u003c\/strong\u003e\u003c\/span\u003e—refer to your service manual or existing parts before installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKit 65W-W0093-02-00\u003c\/strong\u003e (for F25, T25 04~04\/2006, F30, F40, F40B 00~):\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Gasket (65W-14126-10-00)\u003c\/li\u003e\n\u003cli\u003e1 × Needle Valve (6AH-14546-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Float Arm Pin (6H4-14548-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Plunger Cap Cover (65W-14373-02-00)\u003c\/li\u003e\n\u003cli\u003e1 × O-Ring (67C-14397-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Plunger Spring (65W-14335-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Float Chamber Gasket (65W-14384-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Gasket (65W-14398-00-00)\u003c\/li\u003e\n\u003cli\u003e4 × Screw with Washer (97980-04114-00)\u003c\/li\u003e\n\u003cli\u003e1 × Float (63V-14985-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Clip (633-14159-00-00)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eKit 65W-W0093-00-00\u003c\/strong\u003e (for F25, T25 ~03):\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Gasket (65W-14126-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Needle Valve (6G1-14546-01-00)\u003c\/li\u003e\n\u003cli\u003e1 × Float Pin (676-14186-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Float Arm Pin (6H4-14548-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Plunger Cap Cover (65W-14373-01-00)\u003c\/li\u003e\n\u003cli\u003e1 × O-Ring (65W-14147-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Plunger Spring (65W-14335-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Float Chamber Gasket (65W-14384-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Gasket (65W-14398-00-00)\u003c\/li\u003e\n\u003cli\u003e4 × Screw with Washer (97980-04114-00)\u003c\/li\u003e\n\u003cli\u003e1 × Float (63V-14985-00-00)\u003c\/li\u003e\n\u003cli\u003e1 × Clip (633-14159-00-00)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect fuel line and remove carburetor:\u003c\/strong\u003e Shut off fuel valve, disconnect fuel hose, and unbolt the carburetor assembly from the intake manifold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove float bowl:\u003c\/strong\u003e Unscrew the four float bowl screws and carefully lift away the bowl, catching any residual fuel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtract float and needle valve:\u003c\/strong\u003e Pull the float arm pin to release the float assembly, then remove the needle valve from its seat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove old gaskets and seals:\u003c\/strong\u003e Carefully scrape away the old float chamber gasket and all other gaskets using a plastic scraper to avoid damaging mating surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect and clean carburetor body:\u003c\/strong\u003e Use carburetor cleaner and compressed air to thoroughly clean all passages, jets, and seating surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall new O-ring and plunger components:\u003c\/strong\u003e Replace the plunger cap cover, O-ring, and spring with new parts from the kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall new needle valve:\u003c\/strong\u003e Seat the new needle valve into the carburetor body, ensuring it moves freely without binding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall new gasket on carburetor body:\u003c\/strong\u003e Position the new float chamber gasket (65W-14384-00-00) onto the carburetor body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinstall float assembly:\u003c\/strong\u003e Attach the float to the needle valve using the new float arm pin, ensuring proper alignment and free movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify float height:\u003c\/strong\u003e Check float height specification in your service manual (typically 14-16mm); adjust the float tang if necessary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinstall float bowl:\u003c\/strong\u003e Position the bowl with new gasket and secure with the four provided screws and washers, tightening in a cross pattern to manufacturer torque specs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinstall carburetor and test:\u003c\/strong\u003e Mount carburetor back onto engine, reconnect fuel line, prime system, and check for leaks before starting the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I know which kit components to use for my engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Check your engine's production year. F25\/T25 models built through 2003 use kit 65W-W0093-00-00 components; F25\/T25 from 2004-2006 and all F30\/F40\/F40B from 2000 onward use kit 65W-W0093-02-00 components. The primary differences are in the needle valve, plunger cap cover, and O-ring part numbers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are common signs that I need to rebuild my carburetor?\u003c\/strong\u003e\u003cbr\u003e\nA: Typical symptoms include rough idling, hesitation during acceleration, difficulty starting (especially when cold), fuel leaking from the float bowl, or inconsistent engine RPM. If you notice fuel dripping from carburetor overflow tubes, the needle valve and seat likely need replacement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace carburetor gaskets and seals?\u003c\/strong\u003e\u003cbr\u003e\nA: Gaskets and seals should be replaced whenever the carburetor is disassembled for cleaning or repair. For engines in regular use, a complete carburetor rebuild every 3-5 years or 300-500 operating hours helps maintain optimal performance and prevent fuel system issues.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse the old float bowl screws?\u003c\/strong\u003e\u003cbr\u003e\nA: While you may reuse original screws if they're in good condition, this kit includes new screws with integrated washers (97980-04114-00) to ensure proper sealing and torque retention. Using the new hardware is recommended for best results.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between this aftermarket kit and the OEM Yamaha kit?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":50503866220857,"sku":"19CR009","price":17.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/19CR009-1.jpg?v=1754991077"},{"product_id":"thermostat-for-honda-8-255hp-mercury-15-90hp-yamaha-9-9-70hp-3852215","title":"Thermostat (60°C\/140°F) – Fits Honda, Mercury, Yamaha 8-255 HP (Replaces 19300-ZY3-023, 19300-ZW9-003)","description":"\u003ch2\u003eThermostat (60°C\/140°F) – Fits Honda, Mercury, \u0026amp; Yamaha 4-Stroke Outboards\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket thermostat is a high-quality replacement for a wide range of Honda, Mercury, and Yamaha 4-stroke outboard engines. It is engineered to meet or exceed OEM specifications, ensuring reliable engine temperature regulation for optimal performance and longevity. This part is designed for Honda 8-225 HP (2001-Present), Mercury 15-90 HP, and Yamaha 9.9-70 HP (1987-Present) models.\u003c\/p\u003e\n\u003cp\u003eThis component is a direct replacement for numerous Honda, Mercury, Yamaha, and Sierra part numbers, making it a versatile and reliable choice for maintenance and repair.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e Opens at a factory-set \u003cstrong\u003e60°C (140°F)\u003c\/strong\u003e.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Direct replacement for the original OEM thermostat.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Built with an OEM-grade brass and rubber composite for durability and corrosion resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023, 19300-ZW9-003\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eYamaha\u003c\/td\u003e\n \u003ctd\u003e6G8-12411-00-00, 6G8-12411-01-00, 6G8-12411-02-00, 6G8-12411-03-00, 66M-12411-00-00, 66M-12411-01-00\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e825212, 825212001, 825212T02, 855676, 855676003, 855676A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-3541\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Mercury owners, here’s a guide to help you identify your engine’s serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eFor Yamaha owners, here’s a guide to help you identify your engine’s serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-serial-number-guide-2025\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-parts-diagrams-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eHonda\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF8\u003c\/td\u003e\n \u003ctd\u003e8\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZW9-003\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF9.9\u003c\/td\u003e\n \u003ctd\u003e9.9\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZW9-003\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF15\u003c\/td\u003e\n \u003ctd\u003e15\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZW9-003\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF20\u003c\/td\u003e\n \u003ctd\u003e20\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZW9-003\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF25\u003c\/td\u003e\n \u003ctd\u003e25\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZW9-003\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF30\u003c\/td\u003e\n \u003ctd\u003e30\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZW9-003\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF40\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZW9-003\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF50\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZW9-003\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF60\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZW9-003\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF75\u003c\/td\u003e\n \u003ctd\u003e75\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF80\u003c\/td\u003e\n \u003ctd\u003e80\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF90\u003c\/td\u003e\n \u003ctd\u003e90\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF100\u003c\/td\u003e\n \u003ctd\u003e100\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF115\u003c\/td\u003e\n \u003ctd\u003e115\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF130\u003c\/td\u003e\n \u003ctd\u003e130\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF135\u003c\/td\u003e\n \u003ctd\u003e135\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF150\u003c\/td\u003e\n \u003ctd\u003e150\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF175\u003c\/td\u003e\n \u003ctd\u003e175\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF200\u003c\/td\u003e\n \u003ctd\u003e200\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF225\u003c\/td\u003e\n \u003ctd\u003e225\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2001+\u003c\/td\u003e\n \u003ctd\u003e19300-ZY3-023\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eMercury\u003c\/h3\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e15\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e825212, 855676\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e75\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e825212, 855676\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e90\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e825212, 855676\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eYamaha\u003c\/h3\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eYamaha\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e9.9\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987+\u003c\/td\u003e\n \u003ctd\u003e6G8-12411-00-00\u003c\/td\u003e\n \u003ctd\u003eMultiple supersessions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eYamaha\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e15\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987+\u003c\/td\u003e\n \u003ctd\u003e6G8-12411-00-00\u003c\/td\u003e\n \u003ctd\u003eMultiple supersessions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eYamaha\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e20\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987+\u003c\/td\u003e\n \u003ctd\u003e6G8-12411-00-00\u003c\/td\u003e\n \u003ctd\u003eMultiple supersessions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eYamaha\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e25\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987+\u003c\/td\u003e\n \u003ctd\u003e6G8-12411-00-00\u003c\/td\u003e\n \u003ctd\u003eMultiple supersessions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eYamaha\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e30\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987+\u003c\/td\u003e\n \u003ctd\u003e6G8-12411-00-00\u003c\/td\u003e\n \u003ctd\u003eMultiple supersessions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eYamaha\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987+\u003c\/td\u003e\n \u003ctd\u003e6G8-12411-00-00\u003c\/td\u003e\n \u003ctd\u003eMultiple supersessions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eYamaha\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987+\u003c\/td\u003e\n \u003ctd\u003e6G8-12411-00-00\u003c\/td\u003e\n \u003ctd\u003eMultiple supersessions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eYamaha\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e60\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987+\u003c\/td\u003e\n \u003ctd\u003e6G8-12411-00-00\u003c\/td\u003e\n \u003ctd\u003eMultiple supersessions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eYamaha\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e70\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987+\u003c\/td\u003e\n \u003ctd\u003e6G8-12411-00-00\u003c\/td\u003e\n \u003ctd\u003eMultiple supersessions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eSpecification\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eProduct Type\u003c\/td\u003e\n \u003ctd\u003eMarine Engine Thermostat\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eInstallation\u003c\/td\u003e\n \u003ctd\u003eDirect OEM Replacement\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Rating\u003c\/td\u003e\n \u003ctd\u003e\u003cstrong\u003e60°C (140°F) Opening Temperature\u003c\/strong\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHousing Material\u003c\/td\u003e\n \u003ctd\u003eOEM-grade brass and rubber composite\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOperating Temperature\u003c\/td\u003e\n \u003ctd\u003e60°C (140°F) Opening Temperature\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOther Technical Attributes\u003c\/td\u003e\n \u003ctd\u003eAftermarket replacement with OEM-equivalent construction\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cp\u003e1 x Thermostat Assembly (\u003cspan style=\"color:red;\"\u003e60°C\/140°F rating\u003c\/span\u003e)\u003c\/p\u003e\n\n\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003e\n\u003cstrong\u003eSafety First:\u003c\/strong\u003e Ensure the engine is completely cool and disconnected from the power source before beginning.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLocate Thermostat Housing:\u003c\/strong\u003e Find the thermostat housing on the engine block, typically near the top of the cylinder head where the main coolant hose connects.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDrain Coolant:\u003c\/strong\u003e Place a suitable container underneath and drain enough coolant to bring the level below the thermostat housing. This prevents spills.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemove Housing Cover:\u003c\/strong\u003e Loosen and remove the bolts holding the thermostat housing cover in place. Take note of their placement for easier reassembly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eExtract Old Thermostat:\u003c\/strong\u003e Carefully lift out the old thermostat and its gasket or seal. Thoroughly clean any old gasket material or corrosion from both the housing and cover surfaces.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstall New Thermostat:\u003c\/strong\u003e Position the new thermostat assembly in the housing, ensuring it is correctly oriented. The integrated seal should sit flush.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRe-secure Cover:\u003c\/strong\u003e Replace the housing cover and tighten the bolts evenly in a crisscross pattern to the manufacturer's specified torque.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRefill Coolant:\u003c\/strong\u003e Top off the cooling system with the manufacturer-recommended coolant.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCheck for Leaks:\u003c\/strong\u003e Start the engine and let it warm up, carefully inspecting the thermostat housing for any signs of coolant leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this thermostat fits my specific engine model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCheck the \"Compatible Engine Models\" and \"Part Number Cross-Reference\" tables on this page. It is crucial to match your engine's brand, model, HP, and year with the provided data. For Mercury and Yamaha engines, we’ve included links to serial number guides and parts catalogs to help you verify the correct OEM part number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the common signs of a failing thermostat?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCommon signs include the engine overheating, the engine taking too long to reach its normal operating temperature, or erratic temperature gauge readings. A thermostat stuck open will prevent the engine from warming up properly, while one stuck closed will cause it to overheat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this thermostat require a separate gasket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis thermostat is a complete assembly that includes an integrated rubber seal, just like the OEM version. No separate gasket is typically required. However, you should always inspect the mating surfaces of the housing for flatness and damage before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOEM vs. Aftermarket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow fast do you ship and how much does it cost?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is your warranty and return policy?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":50567725121849,"sku":"20TH001","price":21.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Thermostat_for_Honda_8-255HP_Mercury_15-90HP_Yamaha_99-70HP_3852215_-_JLM_MARINE-8290872.jpg?v=1755251687"},{"product_id":"inline-fuel-filter-fits-mercury-mariner-25-90hp-4-stroke-outboards-replaces-35-877565t1-35-877565t","title":"Inline Fuel Filter – Fits Mercury \u0026 Mariner 25-90HP 4-Stroke Outboards (Replaces 35-877565T1, 35-877565T)","description":"\n\u003ch2\u003eInline Fuel Filter – Fits Mercury \u0026amp; Mariner 25-90HP 4-Stroke Outboards\u003c\/h2\u003e\n\u003cp\u003eThis Sierra 18-7714 inline fuel filter is designed for a wide range of Mercury and Mariner 4-stroke outboard engines, from 25 to 90 HP, manufactured from 1999 and newer. It ensures clean fuel delivery, protecting your engine from contaminants.\u003c\/p\u003e\n\u003cp\u003eThis part is a direct replacement for Mercury Marine part numbers \u003cstrong\u003e35-877565T1\u003c\/strong\u003e and \u003cstrong\u003e35-877565T\u003c\/strong\u003e, Sierra \u003cstrong\u003e18-7714\u003c\/strong\u003e, and Rareelectrical \u003cstrong\u003e600-276\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Method:\u003c\/strong\u003e Installs inline with your existing fuel line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Compatibility:\u003c\/strong\u003e Approved for use with gasoline, including modern ethanol-blended fuels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Construction:\u003c\/strong\u003e Features sonically sealed end caps to prevent leaks and OEM-matched filter media for reliable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e35-877565T1 \/ 35-877565T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-7714\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRareelectrical\u003c\/td\u003e\n\u003ctd\u003e600-276\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2006\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003e2 Cylinder, Carbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2006\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0G760300-0T408999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2006\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0P017000-0P153499\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2006\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0P153500-0P388282\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2006\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0T409000-1B344298\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2021\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003e3 Cylinder, Carbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2021\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0G760300-0T408999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2021\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0P017000-0P153499\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2021\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0P153500-0P400999 (Carb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2021\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0T409000-1B226999 (Carb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003e3 \u0026amp; 4 Cylinder versions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0G760300-0T408999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0P017000-0P153499\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0P094500-0P206999 (4 Cyl)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0T178500-0T598999 (4 Cyl)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0P153500-0P400999 (Carb, 3 Cyl)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0T409000-1B226999 (Carb, 3 Cyl)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0P401000 \u0026amp; Up (Carb, 3 Cyl)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 1B227000-1B344306 (Carb, 3 Cyl)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 1C000001-1C018825 (Carb, 3 Cyl)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 1C018826 \u0026amp; Up (Carb, 3 Cyl)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2001-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003e4 Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2001-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0P094500-0P206999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2001-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0T178500-0T598999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2001-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003e4 Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2001-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0P094500-0P206999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2001-2002\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0T178500-0T598999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2000-2004\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003e4 Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2000-2004\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0G960500-0T800999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2000-2004\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0G960500-0T800999 (Bodensee)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e90\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2000-2004\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003e4 Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e90\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2000-2004\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eSerial 0G960500-0T800999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e25-90\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999 \u0026amp; newer\u003c\/td\u003e\n\u003ctd\u003e35-877565T1\/35-877565T\u003c\/td\u003e\n\u003ctd\u003eApplicable for all models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInline Fuel Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGasoline (including ethanol-based fuels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.04 lbs (0.018 kg) item weight, 0.2 lbs (0.09 kg) shipping weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLimited Lifetime (Sierra brand)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOther Technical Attributes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSonically sealed end caps, OEM matched filter media, approved for ethanol-based fuels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e1 x Inline Fuel Filter (35-877565T1\/35-877565T)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eExplosion Diagram\u003c\/h2\u003e\n\u003cimg src=\"placeholder-explosion-diagram.png\" alt=\"Explosion Diagram\" loading=\"lazy\"\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eShut off the fuel supply using the fuel valve and safely disconnect the engine's battery.\u003c\/li\u003e\n\u003cli\u003ePlace a rag or container under the existing filter to catch any fuel spillage.\u003c\/li\u003e\n\u003cli\u003eCarefully loosen the clamps and disconnect the fuel hoses from both ends of the old filter. Note the direction of the fuel flow arrow.\u003c\/li\u003e\n\u003cli\u003eRemove the old filter from its mounting bracket or position.\u003c\/li\u003e\n\u003cli\u003eInstall the new filter, ensuring the arrow correctly points in the direction of fuel flow (towards the engine).\u003c\/li\u003e\n\u003cli\u003eSecurely attach the fuel hoses to the new filter and tighten the clamps.\u003c\/li\u003e\n\u003cli\u003eMount the new filter back into its original position if applicable.\u003c\/li\u003e\n\u003cli\u003eTurn the fuel supply back on and check thoroughly for any leaks around the connections.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery. Prime the fuel system according to your engine's manual before starting.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this filter fits my Mercury or Mariner engine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Check your engine's model, horsepower, and year against the \"Compatible Engine Models\" table. For Mercury engines, verifying the serial number range is the most accurate way to ensure a match. If you are unsure, use the guide linked above or contact us with your engine details.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my inline fuel filter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: For optimal engine health, it is recommended to replace your fuel filter annually or every 100 hours of operation, whichever comes first. Refer to your engine's service manual for specific maintenance intervals, especially if operating in harsh marine environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs of a clogged or failing fuel filter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Common symptoms include the engine sputtering, losing power, stalling at idle, or difficulty starting. A dirty or clogged filter restricts fuel flow, starving the engine of the fuel it needs to run properly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: OEM vs. Aftermarket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51083504386361,"sku":"23FF051","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/23FF051_1.jpg?v=1755257494"},{"product_id":"amkitmer323-annual-maintenance-kit-for-mercury-9-9hp-13-5hp-15hp-jlm-marine","title":"AMKITMER323 Annual Maintenance Kit for Mercury 9.9HP 13.5HP 15HP | JLM Marine","description":"\u003ch2\u003eAnnual Maintenance Kit for Mercury 9.9HP 13.5HP 15HP Outboard Motors\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive annual maintenance kit is designed for Mercury 9.9HP, 13.5HP, and 15HP outboard motors, covering both 2-cylinder 232cc and 323cc 4-stroke carbureted models. It includes all essential components needed for a complete service: water pump rebuild parts, thermostats, filters, gaskets, seals, anodes, and a gear oil pump to keep your engine running at peak performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement for OEM Part Number:\u003c\/strong\u003e AMKITMER323. This kit consolidates multiple Mercury service components into one package, ensuring compatibility across a wide range of serial number ranges from 0G590000 through 1B727495 and beyond.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete annual service solution with \u003cstrong\u003e27 individual components\u003c\/strong\u003e including water pump, thermostat, fuel filter, oil filter, and seals\u003c\/li\u003e\n\u003cli\u003eFits \u003cstrong\u003e4-stroke carbureted motors\u003c\/strong\u003e in 9.9HP (232cc \u0026amp; 323cc), 13.5HP (Non-Bigfoot), and 15HP (Non-Bigfoot) configurations\u003c\/li\u003e\n\u003cli\u003eIncludes gear oil pump and drain gaskets for convenient lower unit maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eAMKITMER323\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eSerial Number Range\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.9HP (232cc)\u003c\/td\u003e\n\u003ctd\u003e9.9HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0H000058-0H016909\u003c\/td\u003e\n\u003ctd\u003e2-cylinder carbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.9HP (323cc)\u003c\/td\u003e\n\u003ctd\u003e9.9HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0G760300-1B226999\u003c\/td\u003e\n\u003ctd\u003e2-cylinder carbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.9HP (323cc)\u003c\/td\u003e\n\u003ctd\u003e9.9HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0P075166-0P400999\u003c\/td\u003e\n\u003ctd\u003e2-cylinder carbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e13.5HP\u003c\/td\u003e\n\u003ctd\u003e13.5HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll Models\u003c\/td\u003e\n\u003ctd\u003eNon-Bigfoot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e15HP\u003c\/td\u003e\n\u003ctd\u003e15HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0G590000-0G760299\u003c\/td\u003e\n\u003ctd\u003eNon-Bigfoot, 2-cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e15HP\u003c\/td\u003e\n\u003ctd\u003e15HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0P401000 \u0026amp; up\u003c\/td\u003e\n\u003ctd\u003eNon-Bigfoot, carbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e15HP\u003c\/td\u003e\n\u003ctd\u003e15HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1B227000-1B727495\u003c\/td\u003e\n\u003ctd\u003eNon-Bigfoot, carbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e15HP\u003c\/td\u003e\n\u003ctd\u003e15HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e9973100-0P016999\u003c\/td\u003e\n\u003ctd\u003eNon-Bigfoot, carbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003eAMKITMER323\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eMercury 9.9HP, 13.5HP, 15HP 4-Stroke Outboards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003e2-Cylinder, Carbureted, Non-Bigfoot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Type\u003c\/td\u003e\n\u003ctd\u003eAnnual Maintenance Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Components\u003c\/td\u003e\n\u003ctd\u003e27 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive annual maintenance kit includes \u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e27 essential components\u003c\/strong\u003e\u003c\/span\u003e for complete engine service:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e46-42040A5\u003c\/strong\u003e Housing x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-191833\u003c\/strong\u003e Gasket x2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-19202\u003c\/strong\u003e Gasket x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-19204-3\u003c\/strong\u003e Gasket x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26-413651\u003c\/strong\u003e Oil seal x2\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e47-42038-2\u003c\/strong\u003e Impeller x1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-16448\u003c\/strong\u003e Gasket x2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e19643\u003c\/strong\u003e Gasket x2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e42200\u003c\/strong\u003e Plate x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e42089A2\u003c\/strong\u003e Housing x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e421021\u003c\/strong\u003e Seal x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e42376A2\u003c\/strong\u003e Key x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-48408\u003c\/strong\u003e Screw x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e42375\u003c\/strong\u003e Plate x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26-33613\u003c\/strong\u003e Seal x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26-42133\u003c\/strong\u003e Seal x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-822236\u003c\/strong\u003e Seal x1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e825212A1\u003c\/strong\u003e Thermostat x1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-8M0177107\u003c\/strong\u003e Thermostat Gasket x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-825701\u003c\/strong\u003e Thermostat Gasket x1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-80365M\u003c\/strong\u003e Fuel filter x1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-816296Q03\u003c\/strong\u003e Fuel filter x1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-822626Q03\u003c\/strong\u003e Oil filter x1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M007119\u003c\/strong\u003e Drain Gasket x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M0204693\u003c\/strong\u003e Drain Gasket x2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e42121Q02\u003c\/strong\u003e Anode x1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e24OP149\u003c\/strong\u003e Gear Oil Pump x1\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare the workspace:\u003c\/strong\u003e Ensure the engine is off, cool, and the boat is securely positioned. Gather all necessary tools including screwdrivers, wrenches, and a clean work surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace the water pump components:\u003c\/strong\u003e Remove the lower unit following your engine's service manual. Disassemble the water pump housing and replace the impeller (47-42038-2), housings, gaskets, and seals with the new components from this kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall new thermostat:\u003c\/strong\u003e Locate the thermostat housing on the engine block. Remove the old thermostat (825212A1) and gaskets (27-8M0177107, 27-825701), clean the mating surfaces thoroughly, and install the new thermostat with fresh gaskets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace fuel filters:\u003c\/strong\u003e Remove the old fuel filters (35-80365M and 35-816296Q03) from the fuel lines. Install the new filters ensuring correct flow direction (arrow markings on filter body).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChange oil filter:\u003c\/strong\u003e Drain the engine oil completely, then remove and replace the oil filter (35-822626Q03). Use the drain gaskets (8M007119, 8M0204693) when reinstalling the drain plug.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService the lower unit:\u003c\/strong\u003e Use the included gear oil pump (24OP149) to drain old gear oil from the lower unit. Inspect for metal shavings or water contamination, then refill with fresh gear oil to the proper level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace seals and gaskets:\u003c\/strong\u003e Install all new seals (26-413651, 421021, 26-33613, 26-42133, 25-822236) and gaskets (12-191833, 27-19202, 27-19204-3, 12-16448, 19643) in their respective positions according to your service manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall the anode:\u003c\/strong\u003e Remove the old sacrificial anode (42121Q02) from the lower unit and replace it with the new one. Ensure metal-to-metal contact for proper corrosion protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReassemble the lower unit:\u003c\/strong\u003e Install plates (42200, 42375), key (42376A2), and secure the housings with the provided screw (10-48408). Torque all fasteners to manufacturer specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconnect and refill:\u003c\/strong\u003e Reattach the lower unit to the engine, reconnect all hoses and fuel lines. Refill engine oil to the proper level and check all connections for leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrime and test:\u003c\/strong\u003e Prime the fuel system by pumping the primer bulb until firm. Start the engine and verify proper water flow from the cooling system tell-tale.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal inspection:\u003c\/strong\u003e Run the engine at idle for several minutes, checking for leaks, proper temperature, and smooth operation. Test at various RPMs and verify all functions before returning to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this kit fits my specific Mercury engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine's serial number with the compatibility table above. The serial number is located on the mounting bracket or transom clamp; use our Mercury Serial Number Guide link to help identify your exact model and year.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I perform this annual maintenance?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends a full service annually or every 100 operating hours, whichever comes first. If you operate in saltwater, sandy conditions, or commercially, consider servicing more frequently (every 50-75 hours).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my water pump impeller needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include reduced water flow from the tell-tale, engine overheating, steam from the engine cover, or decreased performance. If you notice any of these signs, inspect and replace the impeller immediately to prevent engine damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this kit myself or do I need a professional?\u003c\/strong\u003e\u003cbr\u003e\nA: If you have mechanical experience and the proper tools, you can install this kit following the engine service manual. However, professional installation is recommended to ensure all components are correctly installed and torqued to specifications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why does this kit include two fuel filters?\u003c\/strong\u003e\u003cbr\u003e\nA: Different Mercury engine configurations within the 9.9HP-15HP range use different fuel filter designs. This kit includes both variants (35-80365M and 35-816296Q03) to ensure compatibility; install the filter that matches your engine's original configuration.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between OEM and aftermarket parts?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418283798841,"sku":"23KM776-4N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-23KM776-4N_77fcbe8a-d5c8-4f25-b3bb-7a0e9ccebede.png?v=1776686809"},{"product_id":"8m0113483-service-kit-for-mercury-40hp-50hp-60hp-jlm-marine","title":"8M0113483 Service Kit for Mercury 40HP 50HP 60HP | JLM Marine","description":"\u003ch2\u003eService Kit for Mercury 40HP 50HP 60HP – OEM 8M0113483\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive service kit is designed for Mercury \u003cstrong\u003e40 HP, 50 HP, and 60 HP EFI\u003c\/strong\u003e outboard engines with \u003cstrong\u003estandard gear cases only\u003c\/strong\u003e. It consolidates all essential maintenance components—impeller, thermostats, filters, gaskets, and seals—into one complete package, streamlining your annual service or seasonal overhaul.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement for:\u003c\/strong\u003e Mercury OEM part number \u003cstrong\u003e8M0113483\u003c\/strong\u003e. This aftermarket kit meets OEM specifications and is manufactured to deliver reliable performance at a competitive price point.\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003eIncludes \u003cstrong\u003e18 different components\u003c\/strong\u003e covering water pump, fuel system, oil filtration, and lower unit service\u003c\/li\u003e\n \u003cli\u003eFits Mercury EFI models: 40\/50\/60 HP with standard gear cases\u003c\/li\u003e\n \u003cli\u003eComplete service solution for routine maintenance intervals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury (OEM)\u003c\/td\u003e\n \u003ctd\u003e8M0113483\u003c\/td\u003e\n \u003ctd\u003eComplete service kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eEFI (Standard Gear Case)\u003c\/td\u003e\n \u003ctd\u003e40 HP\u003c\/td\u003e\n \u003ctd\u003eEFI models only\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eEFI (Standard Gear Case)\u003c\/td\u003e\n \u003ctd\u003e50 HP\u003c\/td\u003e\n \u003ctd\u003eEFI models only\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eEFI (Standard Gear Case)\u003c\/td\u003e\n \u003ctd\u003e60 HP\u003c\/td\u003e\n \u003ctd\u003eEFI models only\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003e\u003cstrong\u003eValue\u003c\/strong\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOEM Part Number\u003c\/td\u003e\n \u003ctd\u003e8M0113483\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eFitment\u003c\/td\u003e\n \u003ctd\u003eMercury 40\/50\/60 HP EFI (Standard Gear Cases Only)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eKit Type\u003c\/td\u003e\n \u003ctd\u003eComplete Annual Service Kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eComponents Included\u003c\/td\u003e\n \u003ctd\u003e18 parts (impeller, thermostat, filters, gaskets, seals, gear oil pump)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis service kit includes \u003cstrong\u003e18 individual components\u003c\/strong\u003e to cover water pump, fuel, oil, and lower unit service:\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e47-19453T\u003c\/strong\u003e Impeller × 1\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e19700A2\u003c\/strong\u003e Plate × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e893857\u003c\/strong\u003e Water Tube × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e12-858234\u003c\/strong\u003e Gasket × 2\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e28-19699\u003c\/strong\u003e Key × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-822189\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-19701\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e2642\u003c\/strong\u003e Gasket × 4\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e25-62702\u003c\/strong\u003e O-ring × 2\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e191833\u003c\/strong\u003e Gasket × 3\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e8M0117413\u003c\/strong\u003e Thermostat × 1\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-8M0177107\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-879884T\u003c\/strong\u003e Fuel Filter × 1\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-8M0153652\u003c\/strong\u003e Fuel Filter × 1\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-8M0162829\u003c\/strong\u003e Oil Filter × 1\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e8M007119\u003c\/strong\u003e Drain Gasket × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e830749\u003c\/strong\u003e Drain Gasket × 3\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e24OP149\u003c\/strong\u003e Gear Oil Pump × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n \u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Disconnect the fuel line and flush the engine with fresh water. Gather all necessary tools including screwdrivers, wrenches, and a drain pan.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemove Lower Unit:\u003c\/strong\u003e Shift the engine into forward gear and remove the lower unit mounting bolts. Carefully slide the lower unit away from the engine, taking care not to damage the water tube or shift rod.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWater Pump Disassembly:\u003c\/strong\u003e Remove the water pump housing cover and extract the old impeller, plate, and gaskets. Inspect the water tube for corrosion or damage and replace if necessary (included in kit).\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstall New Impeller:\u003c\/strong\u003e Lubricate the new impeller (47-19453T) with glycerin or soapy water. Insert it into the housing with blades oriented in the correct direction (check service manual for your model).\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReassemble Water Pump:\u003c\/strong\u003e Install the new plate (19700A2), gaskets (12-858234, 27-822189, 27-19701), key (28-19699), and O-rings (25-62702) in the proper sequence. Torque all fasteners to manufacturer specifications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReplace Thermostat:\u003c\/strong\u003e Locate the thermostat housing on the cylinder head. Remove the old thermostat (8M0117413) and gasket (27-8M0177107), clean the mating surfaces, and install the new components.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eChange Oil Filter:\u003c\/strong\u003e Remove the old oil filter (35-8M0162829) using a filter wrench. Lubricate the gasket on the new filter with clean engine oil and hand-tighten into place.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReplace Fuel Filters:\u003c\/strong\u003e Install the two new fuel filters (35-879884T and 35-8M0153652) per your engine's fuel system layout. Ensure proper orientation and secure all clamps tightly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLower Unit Service:\u003c\/strong\u003e Drain old gear oil and replace drain gaskets (8M007119, 830749, and additional gaskets 2642, 191833). Refill with fresh gear oil using the included pump (24OP149) until oil appears at the upper vent hole.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReinstall Lower Unit:\u003c\/strong\u003e Align the water tube and shift rod, then slide the lower unit back onto the engine. Install and torque all mounting bolts to specification.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFinal Checks:\u003c\/strong\u003e Reconnect the fuel line and verify all gaskets and seals are properly seated. Refill engine oil to the correct level and check for leaks.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTest Run:\u003c\/strong\u003e Start the engine in a test tank or on-water and verify proper water flow from the telltale. Check for fuel or oil leaks and confirm smooth operation across all RPM ranges.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this kit fits my Mercury engine?\u003c\/strong\u003e\u003cbr\u003e\nThis kit is designed exclusively for Mercury \u003cstrong\u003e40, 50, and 60 HP EFI\u003c\/strong\u003e outboards with \u003cstrong\u003estandard gear cases\u003c\/strong\u003e. Verify your engine's HP rating, fuel system type (must be EFI), and gear case configuration before ordering. If your model uses a different gear case (e.g., high-performance or counter-rotation), this kit will not fit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow often should I perform this service?\u003c\/strong\u003e\u003cbr\u003e\nMercury recommends a complete service every \u003cstrong\u003e100 hours of operation or annually\u003c\/strong\u003e, whichever comes first. If you operate in sandy, silty, or saltwater conditions, inspect the impeller and water pump components every 50 hours and replace as needed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat are the signs that my impeller or thermostat needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA failing impeller typically causes weak or no water flow from the telltale, overheating alarms, or steam from the engine. A faulty thermostat may result in the engine running too cold (poor fuel economy, sluggish performance) or overheating. Replace both components during every annual service to prevent failures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use this kit if I have a non-EFI (carbureted) Mercury in the same HP range?\u003c\/strong\u003e\u003cbr\u003e\nNo. This kit is specifically engineered for \u003cstrong\u003eEFI (Electronic Fuel Injection)\u003c\/strong\u003e models with standard gear cases. Carbureted models and EFI engines with different gear case configurations require different part numbers. Always cross-reference your engine's serial number with Mercury's parts catalog.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy are two fuel filters included?\u003c\/strong\u003e\u003cbr\u003e\nMercury EFI systems in this HP range typically use a dual-stage fuel filtration setup: a low-pressure filter (35-879884T) and a high-pressure filter (35-8M0153652). Both filters must be replaced simultaneously to maintain fuel system integrity and prevent injector clogging.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between OEM and aftermarket service kits?\u003c\/strong\u003e\u003cbr\u003e\nThis listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nWe offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nThis product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418283831609,"sku":"23KM777-4N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-23KM777-4N_e855e885-850e-4194-a6d9-3cc6b20deeea.png?v=1776686812"},{"product_id":"8m0090559-maintenance-kit-for-mercury-40hp-50hp-60hp-efi-ct-big-foot-jlm-marine","title":"8M0090559 Maintenance Kit for Mercury 40HP 50HP 60HP EFI CT Big Foot | JLM Marine","description":"\u003ch2\u003e8M0090559 Maintenance Kit for Mercury 40HP 50HP 60HP EFI CT Big Foot\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive maintenance kit is engineered for Mercury \u003cstrong\u003e40 \/ 50 \/ 60 EFI CT \u0026amp; Big Foot 4-Stroke\u003c\/strong\u003e outboard engines. It consolidates essential service components—including impeller, seals, gaskets, thermostat, fuel filters, oil filter, and gear oil pump—into one complete package to simplify routine maintenance and extend engine life.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement for OEM Part Number:\u003c\/strong\u003e 8M0090559. This aftermarket kit meets OEM specifications and provides reliable performance for scheduled service intervals.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eIncludes \u003cstrong\u003e19 individual components\u003c\/strong\u003e covering water pump, fuel system, lubrication, and cooling service\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for \u003cstrong\u003eEFI (Electronic Fuel Injection)\u003c\/strong\u003e Command Thrust and Big Foot models\u003c\/li\u003e\n\u003cli\u003eComplete kit eliminates the need to source parts individually\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8M0090559\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eEFI CT \u0026amp; Big Foot\u003c\/td\u003e\n\u003ctd\u003e40 \/ 50 \/ 60\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e8M0090559\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e8M0090559\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eMercury 40 \/ 50 \/ 60 HP EFI CT \u0026amp; Big Foot 4-Stroke\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Type\u003c\/td\u003e\n\u003ctd\u003eComplete Maintenance Service Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003e4-Stroke EFI (Electronic Fuel Injection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Components\u003c\/td\u003e\n\u003ctd\u003e19 individual parts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis maintenance kit includes the following components:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e47-43026Q02\u003c\/strong\u003e (Impeller) × 1 \u003cspan style=\"color:red;\"\u003e[Essential water pump component]\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26-8M2014338\u003c\/strong\u003e (Seal) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2210\u003c\/strong\u003e (Seal) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8172761\u003c\/strong\u003e (Plate) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-21836\u003c\/strong\u003e (O-ring) × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-8M0142616\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-8172771\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e28-8M0032833\u003c\/strong\u003e (Key) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26-45577\u003c\/strong\u003e (Seal) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-90196\u003c\/strong\u003e (O-ring) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26-830749\u003c\/strong\u003e (Gasket) × 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M0117413\u003c\/strong\u003e (Thermostat) × 1 \u003cspan style=\"color:red;\"\u003e[Critical cooling component]\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-8M0177107\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35-879884T\u003c\/strong\u003e (Fuel filter) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35-8M0153652\u003c\/strong\u003e (Fuel filter) × 1 \u003cspan style=\"color:red;\"\u003e[Two fuel filters included]\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35-8M0162829\u003c\/strong\u003e (Oil filter) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M007119\u003c\/strong\u003e (Drain Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e830749\u003c\/strong\u003e (Drain Gasket) × 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24OP149\u003c\/strong\u003e (Gear Oil Pump) × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Disconnect the battery and allow the engine to cool completely. Gather necessary tools including socket set, screwdrivers, and a drain pan.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Change:\u003c\/strong\u003e Remove the drain plug using the included drain gasket (8M007119) and drain the engine oil. Install the new oil filter (35-8M0162829) and refill with manufacturer-recommended oil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Filters:\u003c\/strong\u003e Locate and replace both fuel filters (35-879884T and 35-8M0153652) in sequence. Ensure fuel lines are properly reconnected and check for leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Pump Disassembly:\u003c\/strong\u003e Remove the lower unit and locate the water pump housing. Carefully disassemble the pump, noting the orientation of all components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpeller Replacement:\u003c\/strong\u003e Remove the old impeller and install the new impeller (47-43026Q02) with blades oriented in the correct rotation direction. Apply marine grease to the impeller before installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeals \u0026amp; Gaskets:\u003c\/strong\u003e Replace all water pump seals (26-8M2014338, 2210, 26-45577) and gaskets (27-8M0142616, 27-8172771) as you reassemble. Ensure all mating surfaces are clean and free of debris.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlate \u0026amp; Key Installation:\u003c\/strong\u003e Install the plate (8172761) and key (28-8M0032833) in their proper positions within the water pump assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eO-rings:\u003c\/strong\u003e Replace all O-rings (25-21836 ×2, 25-90196) and the multiple gaskets (26-830749 ×3). Lubricate O-rings with a light coating of marine grease.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Replacement:\u003c\/strong\u003e Locate the thermostat housing, remove the old thermostat, and install the new thermostat (8M0117413) with its gasket (27-8M0177107). Ensure proper orientation per service manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Oil Service:\u003c\/strong\u003e Use the included gear oil pump (24OP149) and drain gaskets (830749 ×3) to drain and refill the lower unit with fresh gear oil. Check for proper fill level through the vent hole.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReassembly:\u003c\/strong\u003e Reinstall the lower unit, torquing all fasteners to manufacturer specifications. Double-check all connections and gasket seating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTesting:\u003c\/strong\u003e Reconnect the battery, start the engine in a test tank or on muffs, and verify proper water flow from the telltale. Check for leaks and confirm normal operating temperature.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this maintenance kit fits my Mercury outboard?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify your engine is a Mercury 40, 50, or 60 HP EFI (Electronic Fuel Injection) Command Thrust or Big Foot 4-stroke model. Cross-reference your existing part number 8M0090559 or consult your engine's service manual and serial number plate to confirm compatibility before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I perform this maintenance service?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends full maintenance every 100 hours of operation or annually, whichever comes first. In saltwater or heavy-duty conditions, inspect the impeller and filters more frequently—every 50 hours or mid-season.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my water pump impeller needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include reduced water flow from the telltale (indicator stream), engine overheating, steam from the engine, or an overheating alarm. If you notice any of these, shut down immediately and inspect the impeller and cooling system.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this kit if I have a standard Mercury 50HP without EFI or Big Foot?\u003c\/strong\u003e\u003cbr\u003e\nA: No, this kit is specifically designed for EFI Command Thrust and Big Foot models. Standard carbureted or non-CT\/Big Foot engines require different components, particularly fuel filters and water pump parts. Always match the kit to your exact engine configuration.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need any additional gaskets or sealants not included in this kit?\u003c\/strong\u003e\u003cbr\u003e\nA: This kit includes all major service gaskets, seals, and O-rings for the specified maintenance interval. You may want to have marine-grade gasket sealant or RTV silicone on hand for certain applications, but it is not required for most installations if gaskets are properly seated.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM or aftermarket product?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418283864377,"sku":"23KM778-4N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-23KM778-4N_e8c82744-0d38-4262-8ae1-aa6e5d0e4a11.png?v=1776686814"},{"product_id":"8m0251123-water-pump-impeller-kit-for-mercury-bigfoot-lightning-marathon-super15-seapro-jlm-marine","title":"8M0251123 Water Pump Impeller Kit for Mercury Bigfoot Lightning Marathon Super15 SeaPro | JLM Marine","description":"\u003ch2\u003e8M0251123 Water Pump Impeller Kit for Mercury Bigfoot Lightning Marathon Super15 SeaPro\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive water pump impeller kit is engineered for Mercury outboard motors including \u003cstrong\u003e13.5-15 HP Bigfoot\u003c\/strong\u003e, \u003cstrong\u003e20-25 HP 2-cylinder\u003c\/strong\u003e (serial 0P325500-1B000001 \u0026amp; Up), \u003cstrong\u003e25 HP Lightning 3-cylinder\u003c\/strong\u003e (serial 0E268781-0E288000), and \u003cstrong\u003e25 HP Marathon, Super15, and SeaPro 2-cylinder\u003c\/strong\u003e models. It delivers complete cooling system maintenance in a single package.\u003c\/p\u003e\n\n\u003cp\u003eThis kit directly replaces OEM part number \u003cstrong\u003e8M0251123\u003c\/strong\u003e, providing a cost-effective solution for routine water pump service and ensuring reliable cooling performance across multiple Mercury engine families.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eIncludes \u003cstrong\u003e18 essential components\u003c\/strong\u003e: impeller, seals, gaskets, wear plate, housing, thermostat, fuel filters, and gear oil pump\u003c\/li\u003e\n\u003cli\u003eCovers complete cooling system rebuild with all necessary hardware and consumables\u003c\/li\u003e\n\u003cli\u003eDesigned for Mercury 2-cylinder and 3-cylinder mid-range outboards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8M0251123\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eBigfoot\u003c\/td\u003e\n\u003ctd\u003e13.5 HP, 15 HP\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e2-Cylinder\u003c\/td\u003e\n\u003ctd\u003e20 HP, 25 HP\u003c\/td\u003e\n\u003ctd\u003eSerial 0P325500-1B000001 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eLightning 3-Cylinder\u003c\/td\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003eSerial 0E268781-0E288000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eMarathon, Super15, SeaPro 2-Cylinder\u003c\/td\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis kit includes all components required for a complete water pump and cooling system service:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e47-85089-10\u003c\/strong\u003e Water Pump Impeller × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M0032838 \/ 85119\u003c\/strong\u003e Impeller Key × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e85083\u003c\/strong\u003e Wear Plate × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e46-99157A02\u003c\/strong\u003e Water Pump Housing × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-99326-1\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26-85090001\u003c\/strong\u003e Seal × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-86203\u003c\/strong\u003e Seal × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-86645-1\u003c\/strong\u003e Washer × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e23-85095\u003c\/strong\u003e Insulator × 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-191833\u003c\/strong\u003e Drain Screw Gasket × 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-69202\u003c\/strong\u003e O-Ring × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-62702\u003c\/strong\u003e O-Ring × 2\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e14586\u003c\/strong\u003e Thermostat × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-8M0177107\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-87946Q3\u003c\/strong\u003e Fuel Filter × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-816296Q03\u003c\/strong\u003e Fuel Filter × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-828816\u003c\/strong\u003e Oil Drain Screw Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e24OP149\u003c\/strong\u003e Gear Oil Pump × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect the fuel line\u003c\/strong\u003e and remove the engine cowling to access the lower unit. Tilt the engine fully up and drain the gear oil using the drain screw and new gasket provided.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove the lower unit\u003c\/strong\u003e by loosening the mounting bolts and carefully separating it from the mid-section. Be cautious of the shift rod and water tube connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisassemble the old water pump housing\u003c\/strong\u003e by removing the mounting screws. Extract the old impeller, wear plate, seals, and gaskets; discard all worn components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean all mating surfaces\u003c\/strong\u003e thoroughly to remove old gasket material, corrosion, and debris. Inspect the water pump base for damage or excessive wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall the new wear plate\u003c\/strong\u003e (85083) onto the pump base, ensuring proper alignment. Apply a thin layer of marine grease to facilitate smooth assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLubricate the new impeller\u003c\/strong\u003e (47-85089-10) with glycerin or soapy water, then carefully insert it into the housing with the impeller key (8M0032838) positioned correctly in the drive shaft slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall the new water pump housing\u003c\/strong\u003e (46-99157A02) over the impeller, ensuring all blades flex in the correct direction. Use the new gasket (27-99326-1) and tighten mounting screws evenly in a cross pattern.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace all seals and O-rings\u003c\/strong\u003e (26-85090001, 25-86203, 25-69202, 25-62702) at their respective locations on the drive shaft and housing interfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall the new thermostat\u003c\/strong\u003e (14586) with its gasket (27-8M0177107) into the thermostat housing, ensuring the spring side faces the correct direction per your service manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReattach the lower unit\u003c\/strong\u003e to the mid-section, aligning the shift rod and water tube carefully. Tighten all mounting bolts to factory torque specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefill the gear oil\u003c\/strong\u003e using the provided gear oil pump (24OP149) until oil flows from the upper vent hole. Install new drain screw gaskets (12-191833, 27-828816) and tighten plugs securely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace fuel filters\u003c\/strong\u003e (35-87946Q3, 35-816296Q03) in their respective housings, reconnect fuel lines, and test-run the engine in water to verify proper cooling flow from the telltale indicator.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this kit fits my Mercury engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine's model and serial number with the compatibility table above. For Mercury engines, check the serial number plate on the transom bracket or use the \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e to verify your exact model. If your serial number falls within the ranges listed (e.g., 0P325500-1B000001 \u0026amp; Up for 20-25 HP models), this kit will fit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the water pump impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends replacing the water pump impeller every 2-3 years or 300 hours of operation, whichever comes first. If you operate in sandy or silty water, inspect it annually and replace if any blades show cracking, wear, or deformation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my water pump is failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include weak or no water flow from the telltale (indicator stream), engine overheating warnings, reduced performance, or steam from the engine. If you notice any of these, shut down immediately and inspect the water pump system.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why does this kit include fuel filters and a gear oil pump?\u003c\/strong\u003e\u003cbr\u003e\nA: This is a comprehensive service kit designed to address multiple maintenance items during lower unit service. Replacing fuel filters and servicing gear oil during water pump replacement ensures complete routine maintenance and prevents additional disassembly later.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse the old gaskets and seals if they look okay?\u003c\/strong\u003e\u003cbr\u003e\nA: No, always replace all gaskets, seals, and O-rings during water pump service. Even if they appear intact, compressed gaskets lose their sealing ability and can cause leaks or overheating. All necessary seals and gaskets are included in this kit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between this aftermarket kit and the OEM Mercury kit?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418300641593,"sku":"25KM195-2N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-25KM195-2N_71662689-3585-445c-98a8-4de3abf691a4.png?v=1776686833"},{"product_id":"8m0251125-maintenance-kit-for-mercury-30hp-40hp-jlm-marine","title":"8M0251125 Maintenance Kit for Mercury 30HP 40HP | JLM Marine","description":"\u003ch2\u003e8M0251125 Maintenance Kit for Mercury 30HP 40HP | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive maintenance kit is specifically designed for \u003cstrong\u003eMercury 30-40HP 2-Cylinder USA-made outboard engines manufactured between 1995 and 2007\u003c\/strong\u003e (suits serial numbers starting with \u003cstrong\u003e0G, 0T, 1B, or 0P\u003c\/strong\u003e). It includes all essential components needed for a complete service—from water pump parts to fuel filters and gear oil pump—ensuring your engine runs smoothly and reliably season after season.\u003c\/p\u003e\n\n\u003cp\u003eThis aftermarket kit directly replaces Mercury OEM part number \u003cstrong\u003e8M0251125\u003c\/strong\u003e, providing a cost-effective solution without compromising on quality. Each component is manufactured to OEM specifications, offering dependable performance and extended service intervals.\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003eIncludes water pump impeller, wear plate, gaskets, thermostat, fuel filters, and gear oil pump\u003c\/li\u003e\n \u003cli\u003eComplete service solution for routine maintenance in a single kit\u003c\/li\u003e\n \u003cli\u003eDesigned for 2-cylinder Mercury engines with specific serial number ranges\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e8M0251125\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e2 Cylinder USA made\u003c\/td\u003e\n \u003ctd\u003e30-40HP\u003c\/td\u003e\n \u003ctd\u003e1995-2007 (Suits serial # starting with 0G, 0T, 1B or 0P)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eSpecification\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOEM Part Number\u003c\/td\u003e\n \u003ctd\u003e8M0251125\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eFits Engine HP\u003c\/td\u003e\n \u003ctd\u003e30-40HP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCylinder Configuration\u003c\/td\u003e\n \u003ctd\u003e2 Cylinder\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApplicable Years\u003c\/td\u003e\n \u003ctd\u003e1995-2007\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSerial Number Range\u003c\/td\u003e\n \u003ctd\u003eStarting with 0G, 0T, 1B, or 0P\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis maintenance kit includes the following components:\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e47-85089-10\u003c\/strong\u003e Water Pump Impeller × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e8M0032838 85119\u003c\/strong\u003e Impeller Key × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e821354-2\u003c\/strong\u003e Wear Plate × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-822189\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-822217\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e12-86645-1\u003c\/strong\u003e Washer × 2\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e823547 1\u003c\/strong\u003e Water Tube × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e43023\u003c\/strong\u003e Water Tube × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e14586\u003c\/strong\u003e Thermostat × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-812867 2\u003c\/strong\u003e Thermostat Gasket × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e35-87946Q3\u003c\/strong\u003e Fuel Filter × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e35-879885T\u003c\/strong\u003e Fuel Filter × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e12-191833\u003c\/strong\u003e Drain Screw Gasket × 3\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-828816\u003c\/strong\u003e Oil Drain Screw Gasket × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e24OP149\u003c\/strong\u003e Gear Oil Pump × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Verify all components against your engine's service manual before installation to ensure proper fitment.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n \u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Disconnect the fuel line and remove the lower unit from the engine. Ensure the engine is cool and stabilized on a work stand.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDrain Fluids:\u003c\/strong\u003e Use the provided drain screw gaskets to remove and replace old gearcase oil. Dispose of fluids according to local regulations.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemove Water Pump Housing:\u003c\/strong\u003e Unscrew the water pump housing bolts and carefully lift off the housing. Inspect for corrosion or damage.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReplace Impeller:\u003c\/strong\u003e Remove the old impeller using the impeller key, then install the new impeller (47-85089-10) ensuring blades face the correct direction.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstall Wear Plate:\u003c\/strong\u003e Position the new wear plate (821354-2) on top of the impeller. Ensure it sits flush and aligns with mounting holes.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReplace Gaskets:\u003c\/strong\u003e Install new gaskets (27-822189 and 27-822217) on the housing and base plate. Apply a thin layer of marine grease for easier assembly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstall Water Tubes:\u003c\/strong\u003e Insert the water tubes (823547 1 and 43023) into their respective ports, ensuring secure seating without kinks.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReplace Thermostat:\u003c\/strong\u003e Remove the old thermostat housing, install the new thermostat (14586) with its gasket (27-812867 2), and tighten bolts evenly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstall Fuel Filters:\u003c\/strong\u003e Replace both fuel filters (35-87946Q3 and 35-879885T) in the fuel line. Ensure O-rings are properly seated to prevent leaks.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReassemble Water Pump Housing:\u003c\/strong\u003e Carefully position the housing back onto the lower unit and torque bolts to manufacturer specifications in a cross pattern.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRefill Gearcase Oil:\u003c\/strong\u003e Use the gear oil pump (24OP149) to refill the lower unit with fresh gear oil until it flows from the upper vent hole.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFinal Check:\u003c\/strong\u003e Reconnect the fuel line, reattach the lower unit, and run the engine in a test tank to verify proper water flow and operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this kit fits my Mercury outboard?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify your engine is a 30-40HP 2-cylinder USA-made model from 1995-2007 with a serial number starting with 0G, 0T, 1B, or 0P. Cross-reference your engine's serial number using the Mercury Serial Number Guide linked above.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I perform this maintenance service?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends replacing the water pump impeller and related components annually or every 100 hours of operation, whichever comes first. Fuel filters and thermostats should be inspected and replaced as needed during routine service.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are signs my water pump impeller needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include reduced water flow from the tell-tale indicator, engine overheating, steam from the engine cover, or visible damage to impeller blades during inspection. Never run the engine dry, as this accelerates impeller wear.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this kit if my engine serial number doesn't match the specified range?\u003c\/strong\u003e\u003cbr\u003e\nA: No, this kit is engineered specifically for engines with serial numbers starting with 0G, 0T, 1B, or 0P. Using incompatible parts may result in improper fitment, reduced performance, or engine damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between this aftermarket kit and the OEM version?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418308833593,"sku":"25KM198-2N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-25KM198-2N_dabab56d-310c-4f0d-942d-a467765742a0.png?v=1776686835"},{"product_id":"8m0251126-maintenance-kit-for-mercury-40hp-50hp-3-cylinder-jlm-marine","title":"8M0251126 Maintenance Kit for Mercury 40HP 50HP 3 Cylinder | JLM Marine","description":"\u003ch2\u003e8M0251126 Maintenance Kit for Mercury 40HP 50HP 3 Cylinder | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive maintenance kit is engineered for Mercury 40-50HP 3-cylinder outboard engines manufactured between 1994 and 2011 (serial number range 0G590000 to 2B999999). It consolidates essential service components—including water pump parts, thermostats, fuel filters, and lubrication accessories—into one package to simplify routine maintenance and extend engine life.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 8M0251126. This aftermarket kit delivers direct-fit replacement components that meet or exceed original equipment specifications, providing a cost-effective solution for scheduled service intervals.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete cooling system refresh: impeller, gaskets, thermostat, and water tubes\u003c\/li\u003e\n\u003cli\u003eIncludes fuel filter and gear oil pump for comprehensive drivetrain maintenance\u003c\/li\u003e\n\u003cli\u003eAll components designed for precise fit on USA-model Mercury 3-cylinder engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8M0251126\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eCylinder\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eSerial Number Range\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eUSA Model\u003c\/td\u003e\n\u003ctd\u003e40-50HP\u003c\/td\u003e\n\u003ctd\u003e3 Cylinder\u003c\/td\u003e\n\u003ctd\u003e1994-2011\u003c\/td\u003e\n\u003ctd\u003e0G590000 to 2B999999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e8M0251126\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand Compatibility\u003c\/td\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Power\u003c\/td\u003e\n\u003ctd\u003e40-50HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCylinder Configuration\u003c\/td\u003e\n\u003ctd\u003e3 Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Year Range\u003c\/td\u003e\n\u003ctd\u003e1994-2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Number Range\u003c\/td\u003e\n\u003ctd\u003e0G590000 to 2B999999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eUSA Model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis maintenance kit includes the following components:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e47-85089-10\u003c\/strong\u003e Water Pump Impeller × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M0032838 \/ 85119\u003c\/strong\u003e Impeller Key × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e821354-2\u003c\/strong\u003e Wear Plate × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-822189\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-822217\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-86645-1\u003c\/strong\u003e Washer × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e823547 1\u003c\/strong\u003e Water Tube × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e43023\u003c\/strong\u003e Water Tube × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e850055001\u003c\/strong\u003e Thermostat × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-827284\u003c\/strong\u003e Thermostat Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35-877565T1\u003c\/strong\u003e Fuel Filter × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-191833\u003c\/strong\u003e Drain Screw Gasket × 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-828816\u003c\/strong\u003e Oil Drain Screw Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24OP149\u003c\/strong\u003e Gear Oil Pump × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Verify all components match your engine's service manual specifications before installation.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Disconnect the battery and ensure the engine is cool. Gather necessary tools including screwdrivers, wrenches, and a torque wrench.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess the Lower Unit:\u003c\/strong\u003e Remove the propeller and drain the gear oil using the drain screws. Replace drain screw gaskets (12-191833) during reassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Water Pump Housing:\u003c\/strong\u003e Unbolt the water pump housing from the lower unit. Carefully separate it to expose the old impeller and wear plate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace Impeller \u0026amp; Wear Plate:\u003c\/strong\u003e Remove the old impeller (47-85089-10) and impeller key (8M0032838). Install the new wear plate (821354-2), then insert the new impeller with key aligned.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Gaskets:\u003c\/strong\u003e Replace all pump housing gaskets (27-822189, 27-822217) with new ones. Ensure mating surfaces are clean and free of old gasket material.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace Water Tubes:\u003c\/strong\u003e Install new water tubes (823547 1 and 43023) into their respective ports. Verify secure seating to prevent coolant leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Replacement:\u003c\/strong\u003e Locate the thermostat housing on the cylinder head. Remove the old thermostat (850055001) and gasket (27-827284), then install new components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Filter Service:\u003c\/strong\u003e Replace the inline fuel filter (35-877565T1) in the fuel line. Ensure fuel flow direction matches the arrow on the filter housing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReassemble Water Pump:\u003c\/strong\u003e Torque all water pump housing bolts to manufacturer specifications. Install washers (12-86645-1) as directed in your service manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefill Gear Oil:\u003c\/strong\u003e Use the included gear oil pump (24OP149) to refill the lower unit through the bottom drain hole. Fill until oil appears at the upper vent hole, then replace both drain plugs with new oil drain screw gasket (27-828816).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal Checks:\u003c\/strong\u003e Reinstall the propeller and reconnect the battery. Run the engine in a test tank or on-water to verify proper cooling system operation and check for leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocumentation:\u003c\/strong\u003e Record the service date and hours in your maintenance log. Dispose of used oil and filters according to local regulations.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this kit fits my Mercury engine?\u003c\/strong\u003e\u003cbr\u003e\nVerify your engine's serial number falls within the range 0G590000 to 2B999999 and that it is a USA-model 40-50HP 3-cylinder outboard manufactured between 1994 and 2011. Cross-reference with your owner's manual or use the Mercury serial number guide linked above.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow often should I replace the water pump impeller?\u003c\/strong\u003e\u003cbr\u003e\nMercury recommends replacing the water pump impeller every 2-3 years or 200-300 hours of operation, whichever comes first. Engines operated in sandy or silty water may require more frequent service.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat are the signs that my cooling system needs service?\u003c\/strong\u003e\u003cbr\u003e\nWatch for reduced water stream from the telltale (pee hole), engine overheating alarms, steam from the engine, or poor performance. These symptoms often indicate impeller failure or thermostat issues.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I reuse the old gaskets if they look intact?\u003c\/strong\u003e\u003cbr\u003e\nNo, always replace all gaskets during service even if they appear undamaged. Used gaskets compress and lose their sealing ability, which can lead to coolant leaks and overheating.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between this kit and the OEM Mercury kit?\u003c\/strong\u003e\u003cbr\u003e\nThis listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nWe offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nThis product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418308866361,"sku":"25KM199-2N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-25KM199-2N_0858537e-365f-46ff-9522-2f04a27d9113.png?v=1776686838"},{"product_id":"8m0251127-water-pump-impeller-kit-for-mercury-40hp-4-cylinder-jlm-marine","title":"8M0251127 Water Pump Impeller Kit for Mercury 40HP 4-Cylinder | JLM Marine","description":"\u003ch2\u003e8M0251127 Water Pump Impeller Kit for Mercury 40HP 4-Cylinder | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive water pump impeller kit is engineered for \u003cstrong\u003eMercury 40HP 4-Cylinder outboard engines\u003c\/strong\u003e manufactured between \u003cstrong\u003e1989 and 1997\u003c\/strong\u003e (serial numbers 0C159200 \u0026amp; up and 9570790 \u0026amp; up). Designed to deliver reliable cooling system performance, this kit includes all essential components for a complete pump rebuild.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOEM Reference:\u003c\/strong\u003e 8M0251127. This aftermarket replacement kit provides a cost-effective solution for maintaining optimal water flow and engine temperature regulation.\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003eComplete rebuild kit with \u003cstrong\u003e17 components\u003c\/strong\u003e including impeller, gaskets, seals, and pump base\u003c\/li\u003e\n \u003cli\u003eIncludes bonus items: fuel filter, gear oil pump, and drain screw gaskets\u003c\/li\u003e\n \u003cli\u003eEnsures full cooling system restoration in a single installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e8M0251127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eSerial Numbers\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e4 Cylinder\u003c\/td\u003e\n \u003ctd\u003e40HP\u003c\/td\u003e\n \u003ctd\u003e1989-1997\u003c\/td\u003e\n \u003ctd\u003e0C159200 \u0026amp; up and 9570790 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003e\u003cstrong\u003eValue\u003c\/strong\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOEM Part Number\u003c\/td\u003e\n \u003ctd\u003e8M0251127\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompatible Brand\u003c\/td\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eEngine Type\u003c\/td\u003e\n \u003ctd\u003e4-Cylinder\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHorsepower\u003c\/td\u003e\n \u003ctd\u003e40HP\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eYears\u003c\/td\u003e\n \u003ctd\u003e1989-1997\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSerial Numbers\u003c\/td\u003e\n \u003ctd\u003e0C159200 \u0026amp; up and 9570790 \u0026amp; up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis complete kit includes \u003cstrong\u003e17 essential components\u003c\/strong\u003e for a comprehensive water pump rebuild:\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e47-89983\u003c\/strong\u003e Water Pump Impeller × 1\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e8M0032837\u003c\/strong\u003e Impeller Key × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e32768\u003c\/strong\u003e Wear Plate × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e48753\u003c\/strong\u003e Liner × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-19553\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-19551\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-19552\u003c\/strong\u003e Gasket × 2\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e37721001\u003c\/strong\u003e Seal × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e25-20273\u003c\/strong\u003e Seal × 1\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e46-77822A1\u003c\/strong\u003e Water Pump Base × 1\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e25-26722\u003c\/strong\u003e O-Ring × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e26-830749\u003c\/strong\u003e Drain Plug Seal Gasket × 2\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e2530\u003c\/strong\u003e O-Ring × 2\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e35-877565T1\u003c\/strong\u003e Fuel Filter × 1 \u003ca href=\"https:\/\/jlmmarine.com\/products\/inline-fuel-filter-fits-mercury-mariner-25-90hp-4-stroke-outboards-replaces-35-877565t1-35-877565t\" target=\"_blank\"\u003eView Part →\u003c\/a\u003e\n\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e12-191833\u003c\/strong\u003e Drain Screw Gasket × 3 \u003ca href=\"https:\/\/jlmmarine.com\/products\/drain-screw-gasket-for-mercury-mercruiser-and-johnson-evinrude-lower-unit-12-19183\" target=\"_blank\"\u003eView Part →\u003c\/a\u003e\n\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-828816\u003c\/strong\u003e Oil Drain Screw Gasket × 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e24OP149\u003c\/strong\u003e Gear Oil Pump × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n \u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Disconnect the fuel line and remove the lower unit from the outboard motor following your engine's service manual. Clean the mounting surface thoroughly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemove Old Components:\u003c\/strong\u003e Disassemble the old water pump housing, carefully extracting the worn impeller, gaskets, and seals.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInspect Surfaces:\u003c\/strong\u003e Check the pump base and housing for corrosion, cracks, or scoring. Replace if damaged.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstall Wear Plate:\u003c\/strong\u003e Position the new \u003cstrong\u003ewear plate (32768)\u003c\/strong\u003e onto the pump base, ensuring proper alignment.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLubricate Impeller:\u003c\/strong\u003e Apply marine-grade grease to the new \u003cstrong\u003eimpeller (47-89983)\u003c\/strong\u003e blades for easier installation and initial lubrication.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInsert Impeller Key:\u003c\/strong\u003e Install the \u003cstrong\u003eimpeller key (8M0032837)\u003c\/strong\u003e into the drive shaft, then carefully install the impeller, bending blades in the correct rotation direction.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstall Liner and Seals:\u003c\/strong\u003e Place the \u003cstrong\u003eliner (48753)\u003c\/strong\u003e over the impeller, then install the \u003cstrong\u003eseals (37721001, 25-20273)\u003c\/strong\u003e in their designated grooves.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eApply Gaskets:\u003c\/strong\u003e Position all gaskets (\u003cstrong\u003e27-19553, 27-19551, 27-19552\u003c\/strong\u003e) according to the service manual's exploded diagram.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAssemble Pump Base:\u003c\/strong\u003e Mount the \u003cstrong\u003ewater pump base (46-77822A1)\u003c\/strong\u003e and secure it with appropriate fasteners, torquing to manufacturer specifications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstall O-Rings:\u003c\/strong\u003e Install the \u003cstrong\u003eO-rings (25-26722, 2530)\u003c\/strong\u003e and \u003cstrong\u003edrain plug seal gaskets (26-830749)\u003c\/strong\u003e in their respective locations.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReinstall Lower Unit:\u003c\/strong\u003e Carefully align and reinstall the lower unit onto the motor, ensuring the drive shaft engages properly with the impeller.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTest Operation:\u003c\/strong\u003e Reconnect the fuel line, run the engine with a water supply (using a flush attachment or in the water), and verify proper water discharge from the tell-tale. Check for leaks around all gasket surfaces.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this kit fits my Mercury 40HP engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify your engine is a 4-cylinder model manufactured between 1989 and 1997 with serial number 0C159200 \u0026amp; up or 9570790 \u0026amp; up. Cross-reference the OEM part number 8M0251127 with your engine's service manual or parts diagram.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my water pump impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends replacing the water pump impeller every 2-3 years or 300 hours of operation, whichever comes first. If you notice overheating, reduced water flow from the tell-tale, or operate in sandy\/debris-laden water, inspect and replace more frequently.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs my water pump is failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include engine overheating, weak or no water stream from the tell-tale indicator, steam from the engine, or the overheat alarm sounding. Address these issues immediately to prevent engine damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include everything I need for a complete rebuild?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this comprehensive kit includes the impeller, wear plate, liner, all necessary gaskets, seals, O-rings, pump base, and bonus items like a fuel filter and gear oil pump. You'll have all components needed for a thorough water pump service.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between this aftermarket kit and the OEM version?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418317189433,"sku":"25KM252-2N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-25KM252-2N_73a0f521-e01e-41bd-bbb7-4dc278459551.png?v=1776686846"},{"product_id":"8m0251129-annual-service-kit-for-mercury-70hp-75hp-80hp-90hp-115hp-125hp-60hp-jlm-marine","title":"8M0251129 Annual Service Kit for Mercury 70HP 75HP 80HP 90HP 115HP 125HP 60HP | JLM Marine","description":"\u003ch2\u003eAnnual Service Kit for Mercury 70HP 75HP 80HP 90HP 115HP 125HP 60HP – OEM 8M0251129\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive annual service kit is designed for Mercury outboard engines ranging from 60HP to 125HP. It includes all essential maintenance components needed for a complete yearly service, ensuring your engine runs smoothly and reliably season after season.\u003c\/p\u003e\n\n\u003cp\u003eThis kit directly replaces OEM part number \u003cstrong\u003e8M0251129\u003c\/strong\u003e and provides everything required for routine maintenance, including impeller, seals, gaskets, thermostat, fuel filter, and drain components.\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003eComplete 17-piece service kit with impeller, thermostat, fuel filter, and all necessary seals and gaskets\u003c\/li\u003e\n \u003cli\u003eFits Mercury 60HP Bigfoot, 70-90HP (1987-2016), and 115-125HP carbureted models (1987-2005)\u003c\/li\u003e\n \u003cli\u003eIncludes gear oil pump for convenient fluid changes during service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e8M0251129\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e70, 75, 80, 90 HP\u003c\/td\u003e\n \u003ctd\u003e1987-2016\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e115-125 HP\u003c\/td\u003e\n \u003ctd\u003e1987-2005\u003c\/td\u003e\n \u003ctd\u003eCarburettor models only\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eBigfoot\u003c\/td\u003e\n \u003ctd\u003e60 HP\u003c\/td\u003e\n \u003ctd\u003eS\/N 0G590000 - 0T979999\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eSpecification\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOEM Part Number\u003c\/td\u003e\n \u003ctd\u003e8M0251129\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eKit Type\u003c\/td\u003e\n \u003ctd\u003eAnnual Service Kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTotal Components\u003c\/td\u003e\n \u003ctd\u003e17 pieces\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApplication\u003c\/td\u003e\n \u003ctd\u003eMercury Outboard Engines\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis annual service kit includes the following components:\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e47-43026Q02\u003c\/strong\u003e (Impeller) x 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e26-8M2014338\u003c\/strong\u003e (Seal) x 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e2210\u003c\/strong\u003e (Seal) x 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e8172761\u003c\/strong\u003e (Plate) x 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e25-21836\u003c\/strong\u003e (O-ring) x 2\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-8M0142616\u003c\/strong\u003e (Gasket) x 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27-8172771\u003c\/strong\u003e (Gasket) x 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e28-8M0032833\u003c\/strong\u003e (Key) x 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e26-45577\u003c\/strong\u003e (Seal) x 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e25-90196\u003c\/strong\u003e (O-ring) x 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e26-830749\u003c\/strong\u003e (Gasket) x 3\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e803061T1\u003c\/strong\u003e (Thermostat) x 1\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-877565T1\u003c\/strong\u003e (Fuel Filter) x 1\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e8M007119\u003c\/strong\u003e (Drain Gasket) x 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e830749\u003c\/strong\u003e (Drain Gasket) x 3\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e24OP149\u003c\/strong\u003e (Gear Oil Pump) x 1\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and cool before beginning any maintenance work. Disconnect the battery and fuel line for safety.\u003c\/li\u003e\n \u003cli\u003eRemove the lower unit from the engine following your Mercury service manual procedures. Place the unit on a clean work surface.\u003c\/li\u003e\n \u003cli\u003eRemove the old water pump housing and impeller assembly. Inspect the housing for wear or damage.\u003c\/li\u003e\n \u003cli\u003eInstall the new impeller (47-43026Q02) with a light coating of marine grease, ensuring the blades face the correct direction. Install the new plate (8172761) and key (28-8M0032833).\u003c\/li\u003e\n \u003cli\u003eReplace all seals (26-8M2014338, 2210, 26-45577) and O-rings (25-21836, 25-90196) in their respective positions. Ensure proper seating to prevent leaks.\u003c\/li\u003e\n \u003cli\u003eInstall new gaskets (27-8M0142616, 27-8172771, 26-830749) on the water pump housing and reassemble the pump assembly.\u003c\/li\u003e\n \u003cli\u003eDrain the lower unit gear oil completely and inspect for contaminants. Use the included gear oil pump (24OP149) to refill with fresh Mercury gear lube to the proper level.\u003c\/li\u003e\n \u003cli\u003eInstall new drain gaskets (8M007119, 830749) on all drain and fill plugs. Tighten plugs to manufacturer specifications.\u003c\/li\u003e\n \u003cli\u003eReplace the thermostat (803061T1) in the powerhead, ensuring the temperature rating matches your engine requirements. Install with a new gasket.\u003c\/li\u003e\n \u003cli\u003eInstall the new fuel filter (35-877565T1) in the fuel system, ensuring proper flow direction. Check all fuel line connections for security.\u003c\/li\u003e\n \u003cli\u003eReattach the lower unit to the engine, torquing all fasteners to factory specifications. Reconnect the fuel line and battery.\u003c\/li\u003e\n \u003cli\u003eStart the engine and check for proper water flow from the tell-tale. Inspect all service points for leaks and proper operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this kit fits my specific Mercury engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine's HP rating and year with the compatibility table above. For 60HP Bigfoot models, verify your serial number falls within the range 0G590000 to 0T979999. If you have a 115-125HP engine, confirm it's a carbureted model (not EFI) from 1987-2005.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I perform this annual service?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends performing this comprehensive service every 100 hours of operation or once per year, whichever comes first. If you operate in saltwater, sandy conditions, or use your engine heavily, consider servicing more frequently.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my impeller needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include weak water flow from the tell-tale, engine overheating, steam from the engine, or visible damage to impeller blades during inspection. If your engine is running hot or water flow is reduced, replace the impeller immediately to prevent damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this kit on EFI (fuel-injected) Mercury engines?\u003c\/strong\u003e\u003cbr\u003e\nA: This kit is designed for carbureted models only. For 115-125HP engines, verify your model has a carburetor system rather than electronic fuel injection before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need any special tools to install this service kit?\u003c\/strong\u003e\u003cbr\u003e\nA: Basic marine mechanic tools are required, including socket sets, torque wrench, gasket scraper, and marine grease. The included gear oil pump (24OP149) simplifies lower unit servicing. Refer to your Mercury service manual for specific torque specifications and procedures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between OEM and aftermarket service kits?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418317222201,"sku":"25KM257-2N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-25KM257-2N_bf366006-f9e5-42b4-9739-0b1feb8f9ac8.png?v=1776686849"},{"product_id":"8m0251128-maintenance-kit-for-mercury-60hp-jlm-marine","title":"8M0251128 Maintenance Kit for Mercury 60HP | JLM Marine","description":"\u003ch2\u003e8M0251128 Maintenance Kit for Mercury 60HP\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive maintenance kit is specifically designed for \u003cstrong\u003eMercury 60HP outboard engines\u003c\/strong\u003e manufactured from \u003cstrong\u003e1993 to 2014\u003c\/strong\u003e (serial numbers 0G5900000 to 0T980000 and 0T980000 to serial numbers starting with 1B...). It includes all essential components needed for a complete routine service, ensuring your engine runs reliably season after season.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement:\u003c\/strong\u003e OEM part number \u003cstrong\u003e8M0251128\u003c\/strong\u003e. This aftermarket kit delivers the same functionality and fitment as the original Mercury kit at a competitive price point.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eIncludes impeller, gaskets, thermostat, fuel filter, gear oil pump, and other critical service components\u003c\/li\u003e\n\u003cli\u003eCovers water pump service, cooling system maintenance, and lubrication system needs\u003c\/li\u003e\n\u003cli\u003eDesigned for straightforward installation with standard marine tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm the OEM part number for this maintenance kit:\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8M0251128\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eSerial Number Range\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e60HP\u003c\/td\u003e\n\u003ctd\u003e1993-2014\u003c\/td\u003e\n\u003ctd\u003e0G5900000 to 0T980000 and 0T980000 to serial # starting with 1B...\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e8M0251128\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Brand\u003c\/td\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Power\u003c\/td\u003e\n\u003ctd\u003e60HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplicable Years\u003c\/td\u003e\n\u003ctd\u003e1993-2014\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Type\u003c\/td\u003e\n\u003ctd\u003eComplete Maintenance Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis maintenance kit includes the following components for a complete service:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e47-19453T\u003c\/strong\u003e (Impeller) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e19700A 2\u003c\/strong\u003e (Plate) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e893857\u003c\/strong\u003e (Water tube) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-858234\u003c\/strong\u003e (Gasket) × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e28-19699\u003c\/strong\u003e (Key) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-822189\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-19701\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2642\u003c\/strong\u003e (Gasket) × 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-62702\u003c\/strong\u003e (O-ring) × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e19183 3\u003c\/strong\u003e (Gasket) × 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e850055001\u003c\/strong\u003e (Thermostat) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-827284\u003c\/strong\u003e (Thermostat Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35-877565T1\u003c\/strong\u003e (Fuel Filter) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M007119\u003c\/strong\u003e (Drain Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e830749\u003c\/strong\u003e (Drain Gasket) × 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24OP149\u003c\/strong\u003e (Gear Oil Pump) × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify all part numbers against your engine's service manual before installation to ensure proper fitment.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare the engine:\u003c\/strong\u003e Disconnect the fuel line and ensure the engine is off and cool. Remove the lower unit by loosening the mounting bolts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess the water pump:\u003c\/strong\u003e Remove the water pump housing by unscrewing the retaining bolts. Carefully separate the housing from the lower unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove the old impeller:\u003c\/strong\u003e Pull out the old impeller and water tube. Inspect the impeller housing for wear or damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall the new water tube and key:\u003c\/strong\u003e Insert the new water tube (893857) and position the drive shaft key (28-19699) in place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit the new impeller:\u003c\/strong\u003e Lubricate the new impeller (47-19453T) with water pump grease and carefully insert it into the housing, ensuring the blades follow the correct rotation direction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace all gaskets:\u003c\/strong\u003e Install the new plate (19700A 2) and replace all gaskets (12-858234, 27-822189, 27-19701, 2642) and O-rings (25-62702) as specified in the package contents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall the thermostat:\u003c\/strong\u003e Remove the old thermostat and install the new one (850055001) with the new thermostat gasket (27-827284) and additional gaskets (19183 3).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace the fuel filter:\u003c\/strong\u003e Locate the fuel filter housing, remove the old filter, and install the new fuel filter (35-877565T1).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChange the gear oil:\u003c\/strong\u003e Use the included gear oil pump (24OP149) to drain old gear oil and refill with fresh marine gear oil. Replace the drain gaskets (8M007119, 830749) on all drain\/fill plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReassemble the water pump housing:\u003c\/strong\u003e Carefully align the water pump housing and tighten all bolts in a crisscross pattern to the manufacturer's torque specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReattach the lower unit:\u003c\/strong\u003e Align the lower unit with the drive shaft and secure all mounting bolts. Reconnect the fuel line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest the system:\u003c\/strong\u003e Start the engine in a test tank or on the water and verify proper water flow from the telltale (pee hole). Check for leaks around all gasket surfaces.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this maintenance kit fits my Mercury engine?\u003c\/strong\u003e\u003cbr\u003e\nVerify that your engine is a Mercury 60HP with a serial number between 0G5900000 and 0T980000, or starting with 1B... and manufactured between 1993 and 2014. You can find your serial number on the engine's mounting bracket or use the \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" target=\"_blank\" rel=\"nofollow noopener\"\u003eMercury Serial Number Guide\u003c\/a\u003e for assistance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow often should I replace the components in this maintenance kit?\u003c\/strong\u003e\u003cbr\u003e\nMercury recommends servicing the water pump impeller annually or every 100 operating hours, whichever comes first. The thermostat should be inspected annually and replaced if corroded or damaged. The fuel filter should be replaced annually or if you notice fuel flow issues. Gear oil should be changed annually or every 100 hours, and always after submersion.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat are the signs that my impeller needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nCommon symptoms include reduced or no water flow from the telltale, engine overheating, steam from the engine, or loss of power. If you notice any of these signs, inspect and replace the impeller immediately to prevent engine damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I reuse the old gaskets during installation?\u003c\/strong\u003e\u003cbr\u003e\nNo, you should never reuse old gaskets. This kit includes all necessary gaskets, O-rings, and seals. Always replace them during service to ensure proper sealing and prevent leaks that could lead to overheating or gear oil contamination.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is the gear oil pump included in this kit?\u003c\/strong\u003e\u003cbr\u003e\nThe gear oil pump (24OP149) makes draining and refilling the lower unit gear oil much easier and cleaner. It allows you to pump fresh gear oil into the lower fill hole until it flows from the upper vent hole, ensuring proper fill level and eliminating air pockets.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOEM vs. Aftermarket?\u003c\/strong\u003e\u003cbr\u003e\nThis listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nWe offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nThis product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418325446969,"sku":"25KM259-2N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-25KM259-2N_9c7fce67-e3fe-48f3-83d2-f7381767f8c8.png?v=1776686853"},{"product_id":"8m0251133-water-pump-impeller-kit-for-mercury-30hp-40hp-jlm-marine","title":"8M0251133 Water Pump Impeller Kit for Mercury 30HP 40HP | JLM Marine","description":"\u003ch2\u003e8M0251133 Water Pump Impeller Kit for Mercury 30HP 40HP | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive water pump impeller kit is engineered to fit Mercury 30HP and 40HP 3-cylinder carbureted outboard engines with 2:1 gear ratio configurations. Designed for models with short shaft and standard gearboxes, this kit ensures reliable cooling system performance across a wide range of serial numbers from 0G231123 through 1C018825.\u003c\/p\u003e\n\n\u003cp\u003eThis aftermarket replacement kit directly replaces OEM part number \u003cstrong\u003e8M0251133\u003c\/strong\u003e and provides a complete service solution including the impeller, gaskets, wear plate, thermostat, fuel filters, oil filter, and gear oil pump—everything needed for a thorough cooling system and maintenance service.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete 16-piece kit with impeller, thermostat, fuel filters, oil filter, and gear oil pump\u003c\/li\u003e\n\u003cli\u003eFits Mercury 30HP and 40HP 3-cylinder carbureted models with 2:1 ratio gearboxes\u003c\/li\u003e\n\u003cli\u003eIncludes all necessary gaskets, wear plate, and water tubes for proper installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8M0251133\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eEngine Type\u003c\/th\u003e\n\u003cth\u003eSerial Number Range\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e3-Cylinder Carbureted\u003c\/td\u003e\n\u003ctd\u003e40HP\u003c\/td\u003e\n\u003ctd\u003e3cyl Carb\u003c\/td\u003e\n\u003ctd\u003e1B227000-1B344306, 1C000001-1C018825\u003c\/td\u003e\n\u003ctd\u003eShort Shaft, 2:1 Ratio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e3-Cylinder Carbureted\u003c\/td\u003e\n\u003ctd\u003e40HP\u003c\/td\u003e\n\u003ctd\u003e3cyl Carb\u003c\/td\u003e\n\u003ctd\u003e0P401000 \u0026amp; Up, 0T409000-1B2266999\u003c\/td\u003e\n\u003ctd\u003e2:1 Ratio, Short Shaft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e3-Cylinder Carbureted\u003c\/td\u003e\n\u003ctd\u003e40HP\u003c\/td\u003e\n\u003ctd\u003e3cyl Carb\u003c\/td\u003e\n\u003ctd\u003e0G231123-0P400999\u003c\/td\u003e\n\u003ctd\u003eAll Standard Gearboxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e3-Cylinder\u003c\/td\u003e\n\u003ctd\u003e30HP\u003c\/td\u003e\n\u003ctd\u003e3cyl\u003c\/td\u003e\n\u003ctd\u003eAll Models\u003c\/td\u003e\n\u003ctd\u003eGear Box Ratio 2:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e8M0251133\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible HP Range\u003c\/td\u003e\n\u003ctd\u003e30HP, 40HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Configuration\u003c\/td\u003e\n\u003ctd\u003e3-Cylinder Carbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGear Ratio\u003c\/td\u003e\n\u003ctd\u003e2:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShaft Length\u003c\/td\u003e\n\u003ctd\u003eShort Shaft (select models)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Components\u003c\/td\u003e\n\u003ctd\u003e16 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive kit includes \u003cstrong\u003e16 components\u003c\/strong\u003e for complete cooling system service and routine maintenance:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e47-85089-10\u003c\/strong\u003e Water Pump Impeller × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M0032838 85119\u003c\/strong\u003e Impeller Key × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e821354-2\u003c\/strong\u003e Wear Plate × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-822189\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-822217\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-86645-1\u003c\/strong\u003e Washer × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e823547 1\u003c\/strong\u003e Water Tube × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e43023\u003c\/strong\u003e Water Tube × 1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e825212T02\u003c\/strong\u003e Thermostat × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-8M0177107\u003c\/strong\u003e Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-877565T1\u003c\/strong\u003e Fuel Filter × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-8M0149607\u003c\/strong\u003e Fuel Filter × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-822626Q2\u003c\/strong\u003e Oil Filter × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M007119\u003c\/strong\u003e Drain Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M0204693\u003c\/strong\u003e Drain Gasket × 2\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e24OP149\u003c\/strong\u003e Gear Oil Pump × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003eDisconnect the fuel line and remove the lower unit from the outboard motor following your engine's service manual procedures.\u003c\/li\u003e\n\u003cli\u003eRemove the water pump housing bolts and carefully separate the housing from the driveshaft assembly. Inspect the housing for cracks or damage.\u003c\/li\u003e\n\u003cli\u003eRemove the old impeller, impeller key, and wear plate from the pump housing. Clean all surfaces thoroughly, removing any debris or old gasket material.\u003c\/li\u003e\n\u003cli\u003eInstall the new wear plate into the pump housing, ensuring proper alignment with the mounting holes.\u003c\/li\u003e\n\u003cli\u003eLubricate the new impeller with glycerin or soapy water (never petroleum-based products). Insert the impeller key into the driveshaft slot.\u003c\/li\u003e\n\u003cli\u003eInstall the impeller onto the driveshaft, rotating the blades in the correct direction (typically clockwise when viewed from above). Ensure the impeller key seats properly.\u003c\/li\u003e\n\u003cli\u003eReplace the water tubes with the new ones provided (part numbers 823547 1 and 43023), checking for proper fit and no obstructions.\u003c\/li\u003e\n\u003cli\u003eInstall new gaskets (27-822189, 27-822217, and 27-8M0177107) on all mating surfaces. Do not reuse old gaskets.\u003c\/li\u003e\n\u003cli\u003eReplace the thermostat (825212T02) in its housing, ensuring the temperature-sensing element faces the correct direction per your service manual.\u003c\/li\u003e\n\u003cli\u003eReassemble the water pump housing to the lower unit using the washers (12-86645-1) and tighten bolts in a cross-pattern to manufacturer specifications.\u003c\/li\u003e\n\u003cli\u003eReinstall the lower unit to the engine. Replace the fuel filters (35-877565T1 and 35-8M0149607) and oil filter (35-822626Q2) per your maintenance schedule.\u003c\/li\u003e\n\u003cli\u003eUse the gear oil pump (24OP149) and new drain gaskets (8M007119 and 8M0204693) to change the lower unit gear oil. Run the engine with water supply and check for proper cooling stream.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this kit fits my Mercury engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Check your engine's serial number plate and compare it to the compatible ranges listed above (0G231123 through 1C018825). This kit fits 30HP and 40HP 3-cylinder carbureted models with 2:1 gear ratio gearboxes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the water pump impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends replacing the water pump impeller annually or every 300 hours of operation, whichever comes first. Replace immediately if you notice reduced cooling stream or overheating.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs my water pump impeller needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Warning signs include weak or absent cooling water stream from the indicator, engine overheating, steam from the engine, or reduced water pressure. Impeller blades may become cracked, broken, or worn over time.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use petroleum-based lubricants when installing the impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: No, never use petroleum-based products on the impeller as they can damage the rubber. Use only glycerin, dish soap mixed with water, or dedicated impeller installation lubricant.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include everything I need for a complete water pump service?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this 16-piece kit includes the impeller, gaskets, wear plate, water tubes, thermostat, and even fuel filters, oil filter, and gear oil pump for comprehensive maintenance. You'll have all critical cooling system and service components in one package.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: OEM vs. Aftermarket?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418333704505,"sku":"25KM356","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-25KM356_fbc9f2e9-5011-4090-9d93-304e5964e85b.png?v=1776686859"}],"url":"https:\/\/jlmmarine.com\/collections\/mercury-40-carb-3-cyl-4-stroke-sn-1-018826.oembed","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}