{"product_id":"881862t1-fuel-pump-assembly-for-mercury-mariner-25hp-30hp-40hp-45hp-50hp-55hp-60hp","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","url":"https:\/\/jlmmarine.com\/products\/881862t1-fuel-pump-assembly-for-mercury-mariner-25hp-30hp-40hp-45hp-50hp-55hp-60hp","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}