{"title":"Mercury 9.8 (2 CYL.)(International) (0N007788 THRU 0N055109) Parts \u0026 Diagrams","description":"\u003cp\u003eOEM and aftermarket replacement parts for Mercury 9.8 (2 CYL.)(International). Scroll down for exploded parts diagrams (19), specifications, and maintenance reference.\u003c\/p\u003e","products":[{"product_id":"3b2-03200-carburetor-for-mercury-mariner-tohatsu-nissan-jlm-marine","title":"3B2-03200 Carburetor for Mercury Mariner Tohatsu Nissan | JLM Marine","description":"\u003ch2\u003e3B2-03200 Carburetor for Mercury Mariner, Tohatsu \u0026amp; Nissan 2-Stroke Outboards\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket carburetor assembly is engineered to fit \u003cstrong\u003eMercury Mariner 6HP, 8HP, and 9.8HP 2-stroke outboards\u003c\/strong\u003e, as well as \u003cstrong\u003eTohatsu and Nissan 8HP and 9.8HP 2-stroke engines\u003c\/strong\u003e. It provides reliable fuel delivery for smooth engine operation and is designed to meet OEM specifications for consistent performance.\u003c\/p\u003e\n\u003cp\u003eThis carburetor directly replaces OEM part numbers \u003cstrong\u003e3B2-03200\u003c\/strong\u003e, \u003cstrong\u003e3K9-03200\u003c\/strong\u003e, and \u003cstrong\u003e3G0-03200\u003c\/strong\u003e across Mercury Mariner, Tohatsu, and Nissan outboard models. It is compatible with both 8HP and 9.8HP engines, with the 9.8HP carburetor design suitable for use on 8HP models as well.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncludes carburetor assembly with matching gasket (27-16327)\u003c\/li\u003e\n\u003cli\u003eDesigned for 2-stroke outboard engines\u003c\/li\u003e\n\u003cli\u003eDirect replacement for multiple OEM part numbers\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 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\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e3B2-03200\u003c\/td\u003e\n\u003ctd\u003ePrimary OEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3B2-03200-1\u003c\/td\u003e\n\u003ctd\u003eCarburetor assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3K9-03200-0\u003c\/td\u003e\n\u003ctd\u003eAlternate OEM number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3G0-03200\u003c\/td\u003e\n\u003ctd\u003eAlternate OEM number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e3B2-03200\u003c\/td\u003e\n\u003ctd\u003eCompatible with NS9.8B models\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 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\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\u003e6HP \/ 8HP \/ 9.8HP\u003c\/td\u003e\n\u003ctd\u003e6HP, 8HP, 9.8HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003ePrimary fitment from manufacturer data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e9.8HP (New Model)\u003c\/td\u003e\n\u003ctd\u003e8HP, 9.8HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e8HP engines can use 9.8HP carburetor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNS9.8B\u003c\/td\u003e\n\u003ctd\u003e9.8HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2002 and Earlier\u003c\/td\u003e\n\u003ctd\u003eCarburetor \u0026amp; Inlet Reed Valve applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNS9.8B\u003c\/td\u003e\n\u003ctd\u003e9.8HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eCarburetor \u0026amp; Inlet Reed Valve applications\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 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\u003e3B2-03200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Brands\u003c\/td\u003e\n\u003ctd\u003eMercury Mariner, Tohatsu, Nissan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003e2-Stroke Outboard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower Range\u003c\/td\u003e\n\u003ctd\u003e6HP, 8HP, 9.8HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent Type\u003c\/td\u003e\n\u003ctd\u003eCarburetor Assembly\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;\"\u003e\u003cstrong\u003eCarburetor Assembly (3B2-03200)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: red;\"\u003e\u003cstrong\u003eMatching Gasket (27-16327)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect the fuel line\u003c\/strong\u003e from the existing carburetor and ensure the engine is cool. Remove the spark plug wire to prevent accidental starting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove the old carburetor\u003c\/strong\u003e by loosening the mounting bolts or clamps that secure it to the intake manifold. Note the orientation and position of linkages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect throttle and choke linkages\u003c\/strong\u003e carefully, taking photos or making notes for reference during reassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean the mounting surface\u003c\/strong\u003e on the intake manifold, removing any old gasket material or debris to ensure a proper seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall the new gasket (27-16327)\u003c\/strong\u003e onto the intake manifold mounting surface. Ensure it is properly aligned.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition the new carburetor\u003c\/strong\u003e onto the intake manifold, aligning it with the mounting holes and gasket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure the carburetor\u003c\/strong\u003e with mounting bolts or clamps, tightening evenly to manufacturer's torque specifications (typically hand-tight plus 1\/4 turn).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconnect throttle and choke linkages\u003c\/strong\u003e in the same configuration as the original carburetor, ensuring smooth operation without binding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAttach the fuel line\u003c\/strong\u003e to the carburetor inlet and ensure all connections are secure to prevent leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconnect the spark plug wire\u003c\/strong\u003e and perform a visual inspection of all connections and fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrime the fuel system\u003c\/strong\u003e by squeezing the primer bulb until firm, then start the engine and check for proper idle and throttle response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjust idle speed and mixture screws\u003c\/strong\u003e as needed per your engine's service manual to achieve optimal performance.\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 carburetor fits my specific engine?\u003c\/strong\u003e\u003cbr\u003eA: Cross-reference your engine's model, horsepower, and year with the Compatible Engine Models table above. Verify the OEM part number on your existing carburetor matches 3B2-03200, 3K9-03200, or 3G0-03200. If you have an 8HP Tohatsu or Nissan engine, the 9.8HP carburetor design is compatible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my carburetor needs replacement?\u003c\/strong\u003e\u003cbr\u003eA: Common symptoms include difficulty starting, rough or inconsistent idle, poor throttle response, black smoke from the exhaust, fuel leaks around the carburetor, or the engine stalling under load. If cleaning and adjusting the existing carburetor doesn't resolve these issues, replacement is recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use the 9.8HP carburetor on my 8HP engine?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the 9.8HP carburetor (3B2-03200) is designed to work with 8HP engines as well. The internal jetting and design are compatible, and this is a common practice for these Tohatsu and Nissan models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the package include the gasket needed for installation?\u003c\/strong\u003e\u003cbr\u003eA: Yes, this carburetor comes with the matching gasket (part number 27-16327) required for proper installation and sealing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace or service my carburetor?\u003c\/strong\u003e\u003cbr\u003eA: Carburetors don't have a set replacement interval but should be cleaned and serviced annually or whenever performance issues arise. Replace the carburetor if internal components are worn, corroded, or damaged beyond cleaning, or if fuel leaks cannot be stopped with new gaskets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM part or an aftermarket replacement?\u003c\/strong\u003e\u003cbr\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\u003cbr\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\u003cbr\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":51924872036665,"sku":"23CA482","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/JLM23CA482-1_9f4fb427-c2cf-4289-bc3f-3b00e7e1f8f5.jpg?v=1770528653"},{"product_id":"27-804908a00-gasket-set-lower-unit-kit-for-mercury-8hp-9-9hp-4-stroke-jlm-marine","title":"27-804908A00 Gasket Set Lower Unit Kit for Mercury 8HP 9.9HP 4-Stroke | JLM Marine","description":"\u003ch2\u003e27-804908A00 Gasket Set Lower Unit Kit for Mercury 8HP 9.9HP 4-Stroke | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003eLower Unit Gasket Set\u003c\/strong\u003e is engineered to deliver a perfect fit and reliable performance for Mercury 8HP and 9.9HP 4-stroke outboard engines. Designed as a direct replacement for OEM seal kits, it ensures a seamless installation and leak-free operation for your lower unit assembly.\u003c\/p\u003e\n\n\u003cp\u003eThis kit directly replaces Mercury part numbers \u003cstrong\u003e27-804908A00\u003c\/strong\u003e, \u003cstrong\u003e27-8M0082883\u003c\/strong\u003e, \u003cstrong\u003e27-8M0065830\u003c\/strong\u003e, \u003cstrong\u003e27-804908A02\u003c\/strong\u003e, and \u003cstrong\u003e27-8M0060176\u003c\/strong\u003e, providing broad compatibility across multiple Mercury lower unit configurations.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eComprehensive gasket and seal kit for complete lower unit service\u003c\/li\u003e\n  \u003cli\u003ePrecision-engineered to OE specifications for reliable sealing\u003c\/li\u003e\n  \u003cli\u003eFits Mercury 8\/9.9 HP 4-stroke outboards (serial R042475 \u0026amp; up)\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 applications:\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      \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\u003e27-804908A00\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\u003e27-8M0082883\u003c\/td\u003e\n      \u003ctd\u003eAlternate OEM number\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMercury\u003c\/td\u003e\n      \u003ctd\u003e27-8M0065830\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\u003e27-804908A02\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\u003e27-8M0060176\u003c\/td\u003e\n      \u003ctd\u003eCross-reference\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\u003eSerial 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\u003eMariner\u003c\/td\u003e\n      \u003ctd\u003e8 \/ 9.9 HP\u003c\/td\u003e\n      \u003ctd\u003e4-Stroke\u003c\/td\u003e\n      \u003ctd\u003eR042475 \u0026amp; Up\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\u003eProduct Type\u003c\/td\u003e\n      \u003ctd\u003eLower Unit Gasket \u0026amp; Seal Kit\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eApplication\u003c\/td\u003e\n      \u003ctd\u003eLower Unit Assembly\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCompatibility\u003c\/td\u003e\n      \u003ctd\u003eMercury 8HP \/ 9.9HP 4-Stroke Outboards\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOEM Replacement Numbers\u003c\/td\u003e\n      \u003ctd\u003e27-804908A00, 27-8M0082883, 27-8M0065830, 27-804908A02, 27-8M0060176\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 includes:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003e1× Lower Unit Seal Gasket Kit\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003eThe package contains all the parts shown in the product picture\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 outboard motor from the power source and allow it to cool completely.\u003c\/li\u003e\n  \u003cli\u003eDrain all gear oil from the lower unit into an appropriate container.\u003c\/li\u003e\n  \u003cli\u003eRemove the propeller, then unbolt and separate the lower unit from the mid-section housing.\u003c\/li\u003e\n  \u003cli\u003eCarefully disassemble the lower unit components, noting the position of each seal and gasket.\u003c\/li\u003e\n  \u003cli\u003eClean all mating surfaces thoroughly, removing old gasket material and debris with a scraper and solvent.\u003c\/li\u003e\n  \u003cli\u003eInspect all surfaces for corrosion, warping, or damage that may prevent proper sealing.\u003c\/li\u003e\n  \u003cli\u003eInstall new gaskets and seals from this kit in the exact positions of the originals, ensuring correct orientation.\u003c\/li\u003e\n  \u003cli\u003eApply a thin coat of marine-grade grease to seals to aid installation and prevent damage during assembly.\u003c\/li\u003e\n  \u003cli\u003eReassemble the lower unit components, following your service manual's torque specifications for all fasteners.\u003c\/li\u003e\n  \u003cli\u003eReattach the lower unit to the mid-section, ensuring proper alignment and torquing all mounting bolts to spec.\u003c\/li\u003e\n  \u003cli\u003eRefill the lower unit with the manufacturer-recommended gear oil through the fill port until it reaches the vent hole.\u003c\/li\u003e\n  \u003cli\u003eReinstall the propeller, run the engine briefly, then recheck the gear oil level and inspect for 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 gasket set fits my Mercury outboard?\u003c\/strong\u003e\u003cbr\u003e\nA: Check your engine's serial number (located on the mounting bracket) and confirm it is R042475 or higher for 8HP\/9.9HP 4-stroke models. Cross-reference your current part number against the five OEM numbers listed above to ensure compatibility.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the lower unit gaskets and seals?\u003c\/strong\u003e\u003cbr\u003e\nA: Replace gaskets and seals whenever you perform lower unit service, disassembly for propeller shaft work, or if you notice gear oil leaks or milky oil indicating water intrusion. Most manufacturers recommend lower unit service every 100 hours or annually.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my lower unit seals have failed?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include gear oil that appears milky (water contamination), visible oil leaks around the lower unit housing, difficulty shifting gears, unusual noise from the gearcase, or rapid gear oil loss between service intervals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse the old gaskets if they look intact?\u003c\/strong\u003e\u003cbr\u003e\nA: No, gaskets are designed for single use only. Even if they appear undamaged, they compress during initial installation and will not seal properly when reused, leading to leaks and potential water intrusion into the lower unit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need any special tools to install this gasket set?\u003c\/strong\u003e\u003cbr\u003e\nA: You'll need basic hand tools (sockets, wrenches, screwdrivers), a torque wrench, gasket scraper, marine-grade grease, and the appropriate gear oil. A service manual for your specific engine model is highly recommended for proper torque specifications and assembly procedures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between OEM and aftermarket gasket sets?\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":51981022200121,"sku":"24MSK720","price":55.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/12_fa8ac7ce-6896-457b-8994-ad87947b5e07.jpg?v=1772414732"},{"product_id":"17-95372-18-95295-12-8035161-26-95348-25-16131-27-95220-prop-shaft-seal-kit-with-shear-pin-for-mercury-mariner-2-5hp-3-3hp-jlm-marine","title":"17-95372 18-95295 12-8035161 26-95348 25-16131 27-95220 Prop Shaft Seal Kit with Shear Pin for Mercury Mariner 2.5HP 3.3HP | JLM Marine","description":"\u003ch2\u003eProp Shaft Seal Kit with Shear Pin – Fits Mercury Mariner 2.5HP \u0026amp; 3.3HP Outboard Motors\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive prop shaft seal kit is designed for \u003cstrong\u003eMercury Mariner 2.5HP and 3.3HP 4-stroke outboard engines\u003c\/strong\u003e with serial number \u003cstrong\u003e0R131842 or higher\u003c\/strong\u003e. It provides all the essential seals, gaskets, and pins needed to service your lower gearcase unit and maintain optimal propeller shaft performance.\u003c\/p\u003e\n\n\u003cp\u003eThis kit directly replaces OEM part numbers \u003cstrong\u003e17-95372, 18-95295, 12-8035161, 26-95348, 25-16131, and 27-95220\u003c\/strong\u003e, offering a complete solution for lower unit maintenance in a single package.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIncludes oil seal, gaskets, o-ring, shear pins, and cotter pin for complete lower unit service\u003c\/li\u003e\n  \u003cli\u003eCompatible with Mercury Mariner 4-stroke outboards (serial 0R131842+)\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for multiple OEM part numbers\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\"\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\u003e17-95372, 17-815111, 17-815111002, 17-815111Q02\u003c\/td\u003e\n      \u003ctd\u003eProp Shaft Shear Pin\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMercury\u003c\/td\u003e\n      \u003ctd\u003e18-95295, 18-95295Q\u003c\/td\u003e\n      \u003ctd\u003ePropeller Nut Cotter Pin\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMercury\u003c\/td\u003e\n      \u003ctd\u003e26-95348\u003c\/td\u003e\n      \u003ctd\u003eOil Seal\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMercury\u003c\/td\u003e\n      \u003ctd\u003e25-16131\u003c\/td\u003e\n      \u003ctd\u003eO-ring\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMercury\u003c\/td\u003e\n      \u003ctd\u003e27-95220\u003c\/td\u003e\n      \u003ctd\u003eDrain Gasket\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMercury\u003c\/td\u003e\n      \u003ctd\u003e12-8035161\u003c\/td\u003e\n      \u003ctd\u003eGasket\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\"\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\u003e2.5HP \u0026amp; 3.3HP\u003c\/td\u003e\n      \u003ctd\u003e2.5HP, 3.3HP\u003c\/td\u003e\n      \u003ctd\u003e4-Stroke\u003c\/td\u003e\n      \u003ctd\u003eSerial number 0R131842 or higher\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\u003eApplication\u003c\/td\u003e\n      \u003ctd\u003eLower Gearcase Unit \/ Prop Shaft Service\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\u003c\/td\u003e\n      \u003ctd\u003e2.5HP, 3.3HP\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSerial Number Range\u003c\/td\u003e\n      \u003ctd\u003e0R131842 or higher\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eKit Type\u003c\/td\u003e\n      \u003ctd\u003eComplete Seal \u0026amp; Pin 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 comprehensive kit includes all components needed for lower unit prop shaft service:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e2 x Shear Pin\u003c\/strong\u003e\u003c\/span\u003e (17-95372)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x Cotter Pin\u003c\/strong\u003e (18-95295)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x Oil Seal\u003c\/strong\u003e (26-95348)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x Gasket\u003c\/strong\u003e (12-8035161)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 x O-ring\u003c\/strong\u003e (25-16131)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2 x Drain Gasket\u003c\/strong\u003e (27-95220)\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 spark plug wire and remove the propeller nut and washer. Inspect the old cotter pin and remove it carefully.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemove Propeller:\u003c\/strong\u003e Slide the propeller off the shaft. Check for fishing line or debris around the shaft and clean thoroughly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInspect Shear Pin:\u003c\/strong\u003e Examine the existing shear pin for damage or shearing. If broken, remove both halves completely from the prop shaft.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace Oil Seal:\u003c\/strong\u003e Carefully pry out the old oil seal from the lower unit housing using a seal puller or flat tool. Clean the seal bore and press in the new seal evenly until seated.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall Gaskets \u0026amp; O-ring:\u003c\/strong\u003e Remove old drain gaskets and install new ones on drain\/fill plugs. Replace the o-ring as needed during lower unit service.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall New Shear Pin:\u003c\/strong\u003e Align the propeller hub with the shaft and insert the new shear pin through the aligned holes. Ensure it passes completely through both sides.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReinstall Propeller:\u003c\/strong\u003e Slide the propeller back onto the shaft, ensuring the shear pin is properly seated. Install the washer and propeller nut.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecure with Cotter Pin:\u003c\/strong\u003e Insert the new cotter pin through the propeller nut castle slots and shaft hole. Bend the pin ends outward to lock in place.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinal Check:\u003c\/strong\u003e Verify all components are tight and secure. Rotate the propeller by hand to ensure smooth operation with no binding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReconnect \u0026amp; Test:\u003c\/strong\u003e Reconnect the spark plug wire. Test the engine in a controlled environment before full 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 know if my shear pin is damaged?\u003c\/strong\u003e\u003cbr\u003e\nA: If your propeller spins freely without engaging forward\/reverse thrust, or if you hear unusual rattling from the lower unit, the shear pin has likely sheared. Remove the propeller to inspect—a broken pin will be visibly damaged or missing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the seals and gaskets in this kit?\u003c\/strong\u003e\u003cbr\u003e\nA: Replace the oil seal and gaskets during routine lower unit service (typically every 100 hours or annually). Replace shear pins immediately when broken, and inspect drain gaskets whenever changing lower unit oil.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Will this kit fit Mercury Mariner 2-stroke engines?\u003c\/strong\u003e\u003cbr\u003e\nA: No, this kit is specifically designed for \u003cstrong\u003e4-stroke Mercury Mariner 2.5HP and 3.3HP engines with serial number 0R131842 or higher\u003c\/strong\u003e. Verify your engine model and serial number before purchasing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between the shear pins included and OEM pins?\u003c\/strong\u003e\u003cbr\u003e\nA: These aftermarket shear pins are manufactured to OEM specifications with comparable materials and shear strength. They provide the same protective function—breaking under impact to prevent costly lower unit damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse the old cotter pin?\u003c\/strong\u003e\u003cbr\u003e\nA: No, cotter pins should never be reused. Once bent, they lose their structural integrity and may fail to secure the propeller nut properly, creating a safety hazard.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM product or 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":51981023150393,"sku":"24PK067","price":20.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/12_f0dab45b-421b-4acb-8162-3f3be09b8964.jpg?v=1772414764"},{"product_id":"8m0181314-maintenance-kit-for-mercury-2-5hp-3-5hp-jlm-marine","title":"8M0181314 Maintenance Kit for Mercury 2.5HP 3.5HP | JLM Marine","description":"\u003ch2\u003e8M0181314 Maintenance Kit for Mercury 2.5HP 3.5HP\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive maintenance kit is designed specifically for Mercury 2.5HP and 3.5HP carbureted outboard engines with serial numbers 0R131842 and above. It contains all the essential service components needed for a complete routine maintenance overhaul, ensuring optimal engine performance and longevity.\u003c\/p\u003e\n\n\u003cp\u003eThis kit directly replaces OEM part number \u003cstrong\u003e8M0181314\u003c\/strong\u003e, providing a complete solution for water pump, fuel system, and lower unit servicing in a single package.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eIncludes complete water pump rebuild components (impeller, gaskets, guide plate, and insert)\u003c\/li\u003e\n\u003cli\u003eFeatures fuel filter, thermostat, and oil seal for comprehensive engine maintenance\u003c\/li\u003e\n\u003cli\u003eContains all necessary gaskets, O-rings, pins, and gear oil pump for lower unit 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\"\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\u003e8M0181314\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\u003eCarbureted Outboards\u003c\/td\u003e\n\u003ctd\u003e2.5 \/ 3.5 HP\u003c\/td\u003e\n\u003ctd\u003eSerial Number 0R131842 \u0026amp; Above\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 Number\u003c\/td\u003e\n\u003ctd\u003e8M0181314\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Horsepower\u003c\/td\u003e\n\u003ctd\u003e2.5 HP \/ 3.5 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003eCarbureted Outboards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Number Range\u003c\/td\u003e\n\u003ctd\u003e0R131842 \u0026amp; Above\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\u003e161603\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e161588\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e161591\u003c\/strong\u003e (Guide Plate) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e161571\u003c\/strong\u003e (Insert) × 1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e161543\u003c\/strong\u003e (Impeller) × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16155\u003c\/strong\u003e (Pin) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e804540\u003c\/strong\u003e (Thermostat) × 1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-8M0157133\u003c\/strong\u003e (Fuel Filter) × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8035161\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26-95348\u003c\/strong\u003e (Oil Seal) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-16131\u003c\/strong\u003e (O-ring) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-95220\u003c\/strong\u003e (Drain Gasket) × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17-815111Q02\u003c\/strong\u003e (Pin) × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e95295\u003c\/strong\u003e (Cotter Pin) × 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\u003eDisconnect the fuel line and remove the lower unit from the outboard engine following manufacturer guidelines. Drain all gear oil completely.\u003c\/li\u003e\n\u003cli\u003eRemove the water pump housing and discard the old impeller, gaskets, guide plate, and insert. Clean all surfaces thoroughly to remove debris and old gasket material.\u003c\/li\u003e\n\u003cli\u003eInstall the new insert (161571) into the water pump housing, ensuring proper orientation. Place the new guide plate (161591) on top.\u003c\/li\u003e\n\u003cli\u003eLubricate the new impeller (161543) with glycerin or soapy water, then install it onto the driveshaft with blades oriented correctly. Secure with the new pin (16155).\u003c\/li\u003e\n\u003cli\u003ePosition the new gaskets (161603 and 161588) on the water pump housing, then reassemble the housing to the lower unit. Tighten fasteners to specified torque.\u003c\/li\u003e\n\u003cli\u003eReplace the old thermostat with the new unit (804540), ensuring the temperature-sensing element faces the correct direction. Install with new gasket (8035161).\u003c\/li\u003e\n\u003cli\u003eInstall the new fuel filter (35-8M0157133) in the fuel line, ensuring flow direction matches the arrow marking on the filter body.\u003c\/li\u003e\n\u003cli\u003eReplace the lower unit oil seal (26-95348) and O-ring (25-16131) at the driveshaft. Install new drain gaskets (27-95220) at oil drain and fill ports.\u003c\/li\u003e\n\u003cli\u003eUse the gear oil pump (24OP149) to refill the lower unit with the correct grade and quantity of gear oil until it overflows from the vent hole. Replace drain plugs with new gaskets.\u003c\/li\u003e\n\u003cli\u003eSecure all components with new pins (17-815111Q02) and cotter pin (95295) as specified in your engine's service manual.\u003c\/li\u003e\n\u003cli\u003eReattach the lower unit to the engine, reconnect the fuel line, and check all fasteners for proper torque.\u003c\/li\u003e\n\u003cli\u003eRun the engine in a test tank or on the water, checking for proper water pump discharge, no fuel leaks, and smooth operation before returning to full 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 Mercury outboard?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify that your engine is a 2.5HP or 3.5HP carbureted Mercury outboard with serial number 0R131842 or higher. Check your engine's serial number plate and cross-reference with the compatibility table above, or consult Mercury's parts diagrams using your model year.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace these maintenance components?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends annual maintenance or every 100 hours of operation, whichever comes first. Replace the impeller annually regardless of appearance, as internal wear may not be visible. Inspect thermostats, seals, and gaskets during each service interval.\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: Watch for reduced water flow from the telltale (pilot) stream, engine overheating, steam from the engine, or loss of power. If the engine temperature rises above normal or you notice weak discharge, replace the impeller immediately to prevent damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse any of the old gaskets or seals during installation?\u003c\/strong\u003e\u003cbr\u003e\nA: No, always replace all gaskets, seals, and O-rings with the new components included in this kit. Reusing old gaskets can lead to leaks, improper sealing, and potential engine damage from water intrusion or oil loss.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need any special tools to install this maintenance kit?\u003c\/strong\u003e\u003cbr\u003e\nA: Basic hand tools (screwdrivers, wrenches, pliers) are sufficient for most installations. A torque wrench is recommended for proper fastener tightening. The included gear oil pump (24OP149) simplifies lower unit oil refilling without additional equipment.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM part or 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":52418259059001,"sku":"23KM770-4N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-23KM770-4N_1864322c-d076-4f1b-a0d5-1e6b8275d85a.png?v=1776686794"},{"product_id":"8m0181315-maintenance-kit-for-mercury-4hp-5hp-6hp-4-stroke-jlm-marine","title":"8M0181315 Maintenance Kit for Mercury 4HP 5HP 6HP 4-Stroke | JLM Marine","description":"\u003ch2\u003eMaintenance Kit for Mercury 4HP 5HP 6HP 4-Stroke Outboard Motors\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive maintenance kit is specifically designed for Mercury 4-Stroke outboard motors rated at 4HP, 5HP, and 6HP with carbureted fuel systems. Engineered to fit models with serial numbers 0R411838 and above, this kit provides all essential service components to keep your engine running smoothly and reliably season after season.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOEM Reference Number:\u003c\/strong\u003e 8M0181315. This aftermarket kit delivers the same specifications and quality as the original equipment, ensuring proper fit and performance for routine maintenance intervals.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete service bundle including impeller, thermostat, fuel filter, seals, gaskets, and anode\u003c\/li\u003e\n\u003cli\u003eFits carbureted 4-stroke Mercury motors (4\/5\/6 HP, serial 0R411838 \u0026amp; above)\u003c\/li\u003e\n\u003cli\u003eIncludes specialized gear oil pump for convenient fluid changes\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\"\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\u003e8M0181315\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\"\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\u003c\/td\u003e\n\u003ctd\u003eCarbureted Motors\u003c\/td\u003e\n\u003ctd\u003e4 \/ 5 \/ 6 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial Number 0R411838 \u0026amp; Above\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\u003e8M0181315\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eMercury 4-Stroke Outboard Motors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Rating\u003c\/td\u003e\n\u003ctd\u003e4HP \/ 5HP \/ 6HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel System\u003c\/td\u003e\n\u003ctd\u003eCarbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Number Range\u003c\/td\u003e\n\u003ctd\u003e0R411838 \u0026amp; Above\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Type\u003c\/td\u003e\n\u003ctd\u003eComprehensive 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 complete engine servicing:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Pump Components:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e161543 – Impeller × 1\u003c\/li\u003e\n\u003cli\u003e16160004 – Gasket × 1\u003c\/li\u003e\n\u003cli\u003e16158009 – Gasket × 1\u003c\/li\u003e\n\u003cli\u003e16156 – Gasket × 1\u003c\/li\u003e\n\u003cli\u003e16159 – Guide Plate × 1\u003c\/li\u003e\n\u003cli\u003e16157 – Insert × 1\u003c\/li\u003e\n\u003cli\u003e16155 – Pin × 1\u003c\/li\u003e\n\u003cli\u003e16826 – Gasket × 4\u003c\/li\u003e\n\u003cli\u003e161251 – Screw × 4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Assembly:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e804540 – Thermostat × 1\u003c\/li\u003e\n\u003cli\u003e27-853702005 – Thermostat Gasket × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel System:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e35-8M0157133 – Fuel Filter × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeals \u0026amp; Gaskets:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e26-16130 – Oil Seal × 1\u003c\/li\u003e\n\u003cli\u003e8035161 – Gasket × 1\u003c\/li\u003e\n\u003cli\u003e25-16131 – O-ring × 1\u003c\/li\u003e\n\u003cli\u003e12-191833 – Drain Gasket × 2\u003c\/li\u003e\n\u003cli\u003e27-95220 – Drain Gasket × 2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware \u0026amp; Accessories:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e8150264 – Cotter Pin × 1\u003c\/li\u003e\n\u003cli\u003e875208 – Anode × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:red;\"\u003e24OP149 – Gear Oil Pump × 1\u003c\/span\u003e (for convenient gear oil changes)\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 surfaces thoroughly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Pump Disassembly:\u003c\/strong\u003e Remove the old water pump housing and carefully extract the old impeller, noting its orientation. Inspect the pump housing for scoring or damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall New Impeller:\u003c\/strong\u003e Lubricate the new impeller (161543) with glycerin or soapy water and insert it into the housing with blades oriented correctly. Install the guide plate (16159), insert (16157), and pin (16155).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Replacement:\u003c\/strong\u003e Replace all water pump gaskets (16160004, 16158009, 16156, and 16826) ensuring proper alignment. Torque screws (161251) to manufacturer specifications in a cross pattern.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Service:\u003c\/strong\u003e Remove the old thermostat and gasket from the cylinder head. Install the new thermostat (804540) with gasket (27-853702005), ensuring correct orientation with the spring facing the proper direction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Filter Replacement:\u003c\/strong\u003e Locate the inline fuel filter and replace it with the new filter (35-8M0157133). Ensure fuel flow direction arrows point toward the engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLower Unit Seals:\u003c\/strong\u003e Replace the oil seal (26-16130), O-ring (25-16131), and gasket (8035161) on the lower unit drive shaft and propeller shaft as needed. Apply marine-grade grease to seal lips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrain Plug Gaskets:\u003c\/strong\u003e Install new drain gaskets (12-191833 and 27-95220) on both the upper and lower drain plugs. Do not over-tighten drain plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Oil Service:\u003c\/strong\u003e Use the included gear oil pump (24OP149) to refill the lower unit with the appropriate gear oil until it flows from the upper vent hole. Install both drain plugs with new gaskets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnode Replacement:\u003c\/strong\u003e Remove the old sacrificial anode and install the new anode (875208). Ensure metal-to-metal contact for proper corrosion protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReassembly:\u003c\/strong\u003e Reinstall the lower unit to the engine, aligning the water tube and shift linkage carefully. Torque all mounting bolts to specification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal Check:\u003c\/strong\u003e Reconnect the fuel line, start the engine in a test tank or on muffs, and verify water pump flow and proper operation. Check for leaks around all serviced areas.\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 outboard?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify that your engine is a 4-stroke carbureted Mercury rated at 4HP, 5HP, or 6HP with a serial number of 0R411838 or higher. Cross-reference the OEM part number 8M0181315 with your engine's parts diagram to ensure compatibility.\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 annual maintenance or every 100 hours of operation, whichever comes first. If you operate in sandy, silty, or saltwater conditions, consider more frequent servicing (every 50 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 weak water stream from the tell-tale, engine overheating, steam from the engine, or reduced cooling system performance. If the impeller blades are cracked, worn, or missing pieces, immediate replacement is required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse the old gaskets if they look okay?\u003c\/strong\u003e\u003cbr\u003e\nA: No, always replace all gaskets and seals during maintenance even if they appear intact. Reusing old gaskets can lead to leaks, overheating, and premature component failure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need any special tools to complete this maintenance?\u003c\/strong\u003e\u003cbr\u003e\nA: Basic hand tools are required including socket sets, screwdrivers, and a torque wrench. The kit includes a gear oil pump (24OP149) for lower unit service, eliminating the need to purchase one separately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between OEM and aftermarket maintenance 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":52418259091769,"sku":"23KM771-4N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-23KM771-4N_78ebfc47-2fbf-460e-834a-362ab0b58149.png?v=1776686796"},{"product_id":"8m0181316-maintenance-kit-for-mercury-8hp-9-9hp-jlm-marine","title":"8M0181316 Maintenance Kit for Mercury 8HP 9.9HP | JLM Marine","description":"\u003ch2\u003e8M0181316 Maintenance Kit for Mercury 8HP 9.9HP\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive maintenance kit is engineered for Mercury 8HP and 9.9HP carbureted outboards with serial numbers 0R042475 and above. It consolidates all essential service components—impeller, thermostat, gaskets, fuel filter, anode, and drain hardware—into one complete package, simplifying routine upkeep and extending engine life.\u003c\/p\u003e\n\n\u003cp\u003eDesigned as a direct replacement for OEM part number \u003cstrong\u003e8M0181316\u003c\/strong\u003e, this kit ensures compatibility and reliable performance across specified Mercury models. Each component meets OEM specifications for fit and function, enabling efficient maintenance intervals without sourcing individual parts.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eIncludes water pump rebuild components (impeller, gaskets, guide plate, insert) for optimal cooling system performance\u003c\/li\u003e\n\u003cli\u003eComplete fuel and cooling system service parts: thermostat, fuel filter, and drain gaskets\u003c\/li\u003e\n\u003cli\u003eSacrificial anode and gear oil pump included for comprehensive engine protection\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\u003e8M0181316\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\" 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\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\u003e8 \/ 9.9HP carbureted outboards\u003c\/td\u003e\n\u003ctd\u003e8HP \/ 9.9HP\u003c\/td\u003e\n\u003ctd\u003eSerial number 0R042475 \u0026amp; above\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\u003e8M0181316\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible HP\u003c\/td\u003e\n\u003ctd\u003e8HP \/ 9.9HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003eCarbureted outboards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Number Range\u003c\/td\u003e\n\u003ctd\u003e0R042475 \u0026amp; above\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\u003e161586\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e161585\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e161587\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8037531\u003c\/strong\u003e (Guide Plate) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8037511\u003c\/strong\u003e (Insert) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e9521811\u003c\/strong\u003e (Pin) × 1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e8037481\u003c\/strong\u003e (Impeller) × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16826\u003c\/strong\u003e (Gasket) × 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e161268\u003c\/strong\u003e (Screw) × 4\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e8M0119207\u003c\/strong\u003e (Thermostat) × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-853702005\u003c\/strong\u003e (Thermostat Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-8M0157133\u003c\/strong\u003e (Fuel Filter) × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-895146\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-191833\u003c\/strong\u003e (Drain Gasket) × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-95220\u003c\/strong\u003e (Drain Gasket) × 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8150264\u003c\/strong\u003e (Cotter Pin) × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e823912\u003c\/strong\u003e (Anode) × 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. Drain all gear oil completely before proceeding.\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, guide plate, and insert. Inspect the housing for scoring or corrosion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall New Impeller:\u003c\/strong\u003e Lubricate the new impeller (8037481) with glycerin or soapy water, then install it with blades oriented correctly. Insert the guide plate (8037531) and insert (8037511), securing with pin (9521811).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Replacement:\u003c\/strong\u003e Remove old gaskets (161586, 161585, 161587) from mating surfaces and clean thoroughly. Install new gaskets without adhesive unless specified by the service manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReassemble Water Pump:\u003c\/strong\u003e Reinstall the water pump housing using the four screws (161268) and gaskets (16826). Torque screws evenly in a cross pattern to prevent leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Service:\u003c\/strong\u003e Access the thermostat housing, remove the old thermostat (8M0119207), and replace it along with the gasket (27-853702005). Ensure proper seating to maintain correct operating temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Filter Replacement:\u003c\/strong\u003e Locate the inline fuel filter, disconnect fuel lines, and replace with the new filter (35-8M0157133). Ensure proper flow direction as marked on the filter housing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrain Plug Gaskets:\u003c\/strong\u003e Replace drain plug gaskets (12-191833 and 27-95220) on both the lower unit and any oil reservoir access points. Do not overtighten drain plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnode Inspection:\u003c\/strong\u003e Remove the old sacrificial anode (823912) and inspect the mounting surface. Install the new anode and secure with the cotter pin (8150264).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Oil Refill:\u003c\/strong\u003e Using the included gear oil pump (24OP149), refill the lower unit with manufacturer-recommended gear oil until it flows from the upper vent. Replace gasket (12-895146) and reinstall plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal Assembly:\u003c\/strong\u003e Reattach the lower unit to the outboard, ensuring proper alignment of shift linkage and water tube. Reconnect the fuel line and check for leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Check:\u003c\/strong\u003e Start the engine in a test tank or on muffs and verify consistent water stream from the telltale outlet. Monitor for fuel leaks and proper 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 that your engine is an 8HP or 9.9HP carbureted Mercury outboard with serial number 0R042475 or higher. Cross-check the OEM part number 8M0181316 in your service manual or on Mercury's parts diagram to ensure compatibility.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I perform maintenance with this kit?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends annual maintenance or every 100 hours of operation, whichever comes first. Replace the impeller and inspect the thermostat yearly; replace the fuel filter and drain gaskets during each service interval to prevent cooling and fuel system failures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that I need to replace the impeller or thermostat?\u003c\/strong\u003e\u003cbr\u003e\nA: A weak or absent telltale water stream, engine overheating, or reduced cooling performance indicate impeller failure. If the engine runs too cool or too hot despite a functioning water pump, the thermostat may be stuck open or closed and requires replacement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse the old gaskets if they appear undamaged?\u003c\/strong\u003e\u003cbr\u003e\nA: No, always replace gaskets during maintenance even if they look intact. Compressed gaskets lose their sealing properties and can cause water or oil leaks, compromising engine performance and leading to costly damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM kit 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":52418267283769,"sku":"23KM772-4N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-23KM772-4N_3ab7931f-955d-4041-a46b-266974344a7b.png?v=1776686799"},{"product_id":"8m0120867-maintenance-kit-for-mercury-8hp-9-9hp-15hp-20hp-command-thrust-jlm-marine","title":"8M0120867 Maintenance Kit for Mercury 8HP 9.9HP 15HP 20HP Command Thrust | JLM Marine","description":"\u003ch2\u003e8M0120867 Maintenance Kit for Mercury 8HP 9.9HP 15HP 20HP Command Thrust | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive maintenance kit is engineered for \u003cstrong\u003eMercury 8HP, 9.9HP, 15HP, and 20HP Command Thrust outboard engines\u003c\/strong\u003e within the serial range \u003cstrong\u003e0R235949-0R833819\u003c\/strong\u003e. It consolidates all essential service components—impeller, thermostats, filters, gaskets, and anodes—into one complete package, streamlining routine maintenance and ensuring optimal engine performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement:\u003c\/strong\u003e OEM part number \u003cstrong\u003e8M0120867\u003c\/strong\u003e. This aftermarket kit matches OEM specifications, delivering reliable performance at a competitive price point.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Service Solution:\u003c\/strong\u003e Includes impeller, thermostat assembly, fuel \u0026amp; oil filters, gaskets, anode, and gear oil pump—everything needed for a full maintenance cycle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide HP Range:\u003c\/strong\u003e Fits 8HP through 20HP Command Thrust models within the specified serial range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOEM-Spec Construction:\u003c\/strong\u003e Manufactured to meet Mercury's dimensional and material standards for drop-in compatibility.\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\u003e8M0120867\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\"\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\u003eSerial 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\u003eCommand Thrust\u003c\/td\u003e\n        \u003ctd\u003e8 \/ 9.9 HP\u003c\/td\u003e\n        \u003ctd\u003e0R235949-0R833819\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eStandard\u003c\/td\u003e\n        \u003ctd\u003e15 HP\u003c\/td\u003e\n        \u003ctd\u003e0R235949-0R833819\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eStandard\u003c\/td\u003e\n        \u003ctd\u003e20 HP\u003c\/td\u003e\n        \u003ctd\u003e0R235949-0R833819\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\u003e8M0120867\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eApplication\u003c\/td\u003e\n      \u003ctd\u003eMercury 8HP \/ 9.9HP \/ 15HP \/ 20HP Command Thrust Outboards\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSerial Range\u003c\/td\u003e\n      \u003ctd\u003e0R235949-0R833819\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:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8M0075040\u003c\/strong\u003e – Gasket × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e803753\u003c\/strong\u003e – Guide Plate × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e803751\u003c\/strong\u003e – Insert × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e803749\u003c\/strong\u003e – Key × 1\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e803748\u003c\/strong\u003e – Impeller × 1\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e823042046\u003c\/strong\u003e – Screw × 3\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e8M0119207\u003c\/strong\u003e – Thermostat × 1\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e27-853702005\u003c\/strong\u003e – Thermostat Gasket × 1\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-8M0157133\u003c\/strong\u003e – Fuel Filter × 1\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-822626Q03\u003c\/strong\u003e – Oil Filter × 1\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e12-895146\u003c\/strong\u003e – Gasket × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e12-191833\u003c\/strong\u003e – Drain Gasket × 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e27-95220\u003c\/strong\u003e – Drain Gasket × 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8150264\u003c\/strong\u003e – Cotter Pin × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e823912\u003c\/strong\u003e – Anode × 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\u003ePreparation:\u003c\/strong\u003e Disconnect the fuel line and place the engine in an upright, stable position. Gather necessary tools including screwdrivers, wrenches, and a drain pan.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemove Lower Unit:\u003c\/strong\u003e Drain the gear oil using the drain screws and collect it in a pan. Unbolt and carefully separate the lower unit from the mid-section.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccess Water Pump Housing:\u003c\/strong\u003e Remove the water pump housing cover by unscrewing the retaining bolts. Take note of the orientation of components for reassembly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace Impeller:\u003c\/strong\u003e Remove the old impeller, insert, key, and guide plate. Install the new key (803749), insert (803751), impeller (803748), and guide plate (803753) in the correct orientation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall Gaskets:\u003c\/strong\u003e Replace all old gaskets with the new ones provided (8M0075040, 12-895146, 12-191833, 27-95220). Ensure mating surfaces are clean and free of debris.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace Thermostat:\u003c\/strong\u003e Locate the thermostat housing, remove the old thermostat, and install the new thermostat (8M0119207) along with its gasket (27-853702005).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChange Fuel \u0026amp; Oil Filters:\u003c\/strong\u003e Replace the fuel filter (35-8M0157133) in the fuel line and the oil filter (35-822626Q03) at its mounting location. Hand-tighten securely.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall Anode:\u003c\/strong\u003e Replace the sacrificial anode (823912) on the lower unit or engine bracket. This protects metal components from galvanic corrosion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReassemble Water Pump:\u003c\/strong\u003e Secure the water pump housing with the provided screws (823042046) and tighten in a crisscross pattern to ensure even sealing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReattach Lower Unit:\u003c\/strong\u003e Using the gear oil pump (24OP149), refill the lower unit with the manufacturer-recommended gear oil until it flows from the upper vent. Reinstall drain gaskets and secure the lower unit to the mid-section.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReconnect \u0026amp; Test:\u003c\/strong\u003e Reconnect the fuel line, check all fasteners for tightness, and inspect for any leaks. Start the engine in a test tank or on-water and confirm proper water flow from the tell-tale.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinal Inspection:\u003c\/strong\u003e Run the engine at idle for several minutes, then increase throttle gradually. Monitor for overheating, unusual vibrations, or leaks and address any issues immediately.\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's serial number falls within the range \u003cstrong\u003e0R235949-0R833819\u003c\/strong\u003e and that your engine is an 8HP, 9.9HP, 15HP, or 20HP Command Thrust model. Cross-reference with the Compatible Engine Models table above or consult your engine's service manual.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the components in this maintenance kit?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends inspecting the impeller annually and replacing it every 2–3 years or 200–300 operating hours, whichever comes first. Thermostats, filters, and anodes should be replaced at similar intervals or whenever signs of wear, corrosion, or clogging are observed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my impeller or thermostat needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Impeller failure typically shows as reduced water flow from the tell-tale, overheating alarms, or visible damage (cracked\/missing vanes). A faulty thermostat may cause the engine to run too cool (poor fuel economy, sluggish performance) or overheat (steam, alarm).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse any of the old gaskets or filters?\u003c\/strong\u003e\u003cbr\u003e\nA: No. Gaskets compress and deform during initial installation, and reusing them can lead to leaks. Filters accumulate contaminants over time and must be replaced to maintain proper fuel and oil flow.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need any special tools to install this maintenance kit?\u003c\/strong\u003e\u003cbr\u003e\nA: Basic hand tools (screwdrivers, socket set, pliers) are sufficient for most steps. The included gear oil pump (24OP149) simplifies lower unit refilling. A service manual for your specific engine model is highly recommended.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM or aftermarket part?\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":52418267316537,"sku":"23KM773-4N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-23KM773-4N_fffc370d-57ef-443b-8e26-770e764dd409.png?v=1776686801"}],"url":"https:\/\/jlmmarine.com\/collections\/mercury-9-8-2-cyl-international-sn-0-007788.oembed","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}