{"title":"Mercury 9.9 (2 CYL.) (International) (0N059858 \u0026 Up) Parts \u0026 Diagrams","description":"\u003cp\u003eOEM and aftermarket replacement parts for Mercury 9.9 (2 CYL.) (International). Scroll down for exploded parts diagrams (25), specifications, and maintenance reference.\u003c\/p\u003e","products":[{"product_id":"ignition-key-switch-for-mercury-mariner-dfi-efi-mpi-outboard-motors-87-17009a5","title":"87-17009A5 Ignition Key Switch for Mercury | JLM Marine","description":"\u003ch2\u003eIgnition Key Switch for Mercury Outboard – 87-17009A5\u003c\/h2\u003e\n\n\u003cp\u003eThis ignition key switch is engineered for Mercury outboard remote control systems, providing reliable 3-position operation (Off-Run-Start) with push-to-choke functionality in the start position. Designed for Commander 2000 and 4000 series side-mount remote controls, it fits a wide range of 2-cylinder Mercury and Mariner outboards from 9.9HP to 30HP across model years 1986 through 2010.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement:\u003c\/strong\u003e OEM part number \u003cstrong\u003e87-17009A5\u003c\/strong\u003e (Mercury 17009A5 SWITCH ASSY). Compatible with Commander 2000 (16900 Series) and Remote Control-4000 Side Mount systems without power trim.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagneto-style ignition switch\u003c\/strong\u003e with heavy-duty potted construction for marine durability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush-to-choke function\u003c\/strong\u003e in start position for easier cold starts\u003c\/li\u003e\n\u003cli\u003eCompact dimensions: 58.18 × 37.62 × 17.54 mm\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\u003e87-17009A5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e17009A5\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\u003eHP\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 Outboard\u003c\/td\u003e\n\u003ctd\u003e18HP\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2 CYL\u003c\/td\u003e\n\u003ctd\u003eSerial 0N001590 - 0N055284\u003c\/td\u003e\n\u003ctd\u003eRemote Control (Cat.# 90-803827)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Outboard\u003c\/td\u003e\n\u003ctd\u003e15HP\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2 CYL\u003c\/td\u003e\n\u003ctd\u003eSerial 0N001590 - 0N055284\u003c\/td\u003e\n\u003ctd\u003eRemote Control (Cat.# 90-803827)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Outboard\u003c\/td\u003e\n\u003ctd\u003e25HP\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2 CYL\u003c\/td\u003e\n\u003ctd\u003eSerial 0N018456 - 0N055504 (Belgium)\u003c\/td\u003e\n\u003ctd\u003eRemote Control with Quicksilver Logo (Cat.# 90-803821)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Outboard\u003c\/td\u003e\n\u003ctd\u003e30HP\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2 CYL\u003c\/td\u003e\n\u003ctd\u003eSerial 0N001875 - 0N055504 (Belgium)\u003c\/td\u003e\n\u003ctd\u003eRemote Control with Quicksilver Logo (Cat.# 90-803821)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Outboard\u003c\/td\u003e\n\u003ctd\u003e9.9HP\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e2 CYL\u003c\/td\u003e\n\u003ctd\u003eSerial 0N059858 \u0026amp; Up\u003c\/td\u003e\n\u003ctd\u003eRemote Control-4000 Side Mount (Non Power Trim, Cat.# 90-803827006)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Outboard\u003c\/td\u003e\n\u003ctd\u003eCommander 2000 Remote Control\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e1986 - 1993\u003c\/td\u003e\n\u003ctd\u003eRigging Parts Remote Controls and Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Outboard\u003c\/td\u003e\n\u003ctd\u003eCommander 2000 Remote Control (16900 Series)\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n\u003ctd\u003eRigging Parts Remote Controls and Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Boats (Quicksilver Inflatable)\u003c\/td\u003e\n\u003ctd\u003eAA380DH4A\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e2004\u003c\/td\u003e\n\u003ctd\u003eRemote Control Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Boats (Quicksilver Inflatable)\u003c\/td\u003e\n\u003ctd\u003eAA320DH4M\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e2004\u003c\/td\u003e\n\u003ctd\u003eRemote Control Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Boats (Quicksilver Inflatable)\u003c\/td\u003e\n\u003ctd\u003eAA320005M\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e2006\u003c\/td\u003e\n\u003ctd\u003eRemote Control Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Accessories\u003c\/td\u003e\n\u003ctd\u003eRemote Control-4000 Side Mount (Non Power Trim)\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e1994 \u0026amp; Up\u003c\/td\u003e\n\u003ctd\u003eCat.# 90-8M0125572\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Outboard\u003c\/td\u003e\n\u003ctd\u003e1025312FL\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e2010\u003c\/td\u003e\n\u003ctd\u003eRemote Control-4000 Side Mount (Non Power Trim)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner Outboard\u003c\/td\u003e\n\u003ctd\u003e15HP (7015213RL)\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e2004\u003c\/td\u003e\n\u003ctd\u003eRemote Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner Outboard\u003c\/td\u003e\n\u003ctd\u003e15HP (7015213KL)\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e2001\u003c\/td\u003e\n\u003ctd\u003eRemote Control\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\u003e87-17009A5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitch Type\u003c\/td\u003e\n\u003ctd\u003eMagneto-style ignition switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition\u003c\/td\u003e\n\u003ctd\u003e3-Position (Off-Run-Start)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChoke Function\u003c\/td\u003e\n\u003ctd\u003ePush to choke in start position\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eHeavy-duty potted construction, minimal bleed per circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePlastic + Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e58.18 × 37.62 × 17.54 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Ignition Key Switch\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect the battery\u003c\/strong\u003e before beginning any electrical work to prevent accidental shorts or sparks.\u003c\/li\u003e\n\u003cli\u003eAccess the back of your remote control box by removing the cover or housing screws. Locate the existing ignition switch.\u003c\/li\u003e\n\u003cli\u003eDisconnect the wiring harness from the old switch, noting the wire positions or taking a photo for reference.\u003c\/li\u003e\n\u003cli\u003eRemove the retaining nut or mounting hardware securing the old switch to the control panel.\u003c\/li\u003e\n\u003cli\u003ePull the old switch out from the front of the control panel.\u003c\/li\u003e\n\u003cli\u003eInsert the new ignition switch into the panel opening from the front. Ensure proper orientation (Off-Run-Start positions match your control layout).\u003c\/li\u003e\n\u003cli\u003eSecure the switch from behind with the retaining nut or mounting hardware. Tighten until snug but do not over-torque plastic threads.\u003c\/li\u003e\n\u003cli\u003eReconnect the wiring harness to the terminals on the new switch, matching your reference notes or photo.\u003c\/li\u003e\n\u003cli\u003eVerify all connections are firm and properly seated. Check that no wires are pinched or exposed.\u003c\/li\u003e\n\u003cli\u003eReinstall the remote control cover or housing and secure all screws.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery and test the switch in all three positions: Off, Run, and Start with choke function.\u003c\/li\u003e\n\u003cli\u003eConfirm the engine starts normally and that the key can be removed only in the Off position.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this ignition switch fits my Mercury remote control?\u003c\/strong\u003e\u003cbr\u003e\nCheck the compatible engine models table above for your HP rating, serial number range, and remote control series (Commander 2000 or 4000 Side Mount). You can also cross-reference your existing switch with OEM part number 87-17009A5 or verify fitment using the Mercury parts diagrams linked in the compatibility section.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat should I do if the engine won't start after installing the new switch?\u003c\/strong\u003e\u003cbr\u003e\nFirst, verify all wiring connections match your original configuration and are fully seated. Check that the battery is reconnected and charged, and confirm the switch clicks firmly into each position (Off-Run-Start). If the issue persists, test for continuity across switch terminals in the Run and Start positions using a multimeter.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use this switch on a remote control with power trim?\u003c\/strong\u003e\u003cbr\u003e\nThis switch is designed for non-power-trim Commander 2000 and 4000 side-mount remote controls. If your system includes power trim functionality, verify your control box wiring and switch terminal configuration match before installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does the push-to-choke feature work in the start position?\u003c\/strong\u003e\u003cbr\u003e\nWhen you turn the key to Start, you can push the key inward to engage the choke circuit, enriching the fuel mixture for easier cold starts. Release the push after the engine fires and return the key to the Run position.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat are signs that my ignition switch needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nCommon symptoms include intermittent starting, the engine cutting out in the Run position, difficulty turning the key, inability to remove the key in Off position, or visible corrosion and damage to the switch housing or terminals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOEM vs. Aftermarket—what's the difference?\u003c\/strong\u003e\u003cbr\u003e\nThis listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nWe offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nThis product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":49560696160569,"sku":"23KS476","price":15.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Ignition_Key_Switch_for_Mercury_Mariner_DFI_EFI_MPI_Outboard_Motors_____87-17009A5_-_JLM_MARINE-8287244.png?v=1755252892"},{"product_id":"mercury-inline-fuel-filter-fits-mercury-mariner-9-9-50hp-outboards-replaces-35-8m0088825-853733a2-853733t02-853733t03-898101t68","title":"35-853733A2 Fuel Filter for Mercury Tohatsu 25HP 30HP 40HP | JLM Marine","description":"\u003ch2\u003e35-853733A2 Fuel Filter for Mercury Tohatsu 25HP 30HP 40HP | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis high-quality aftermarket fuel filter is engineered to fit Mercury and Tohatsu outboard engines from 25HP to 40HP, covering both 2-cylinder and 3-cylinder configurations in carbureted and EFI models. It ensures reliable fuel filtration to protect your engine from contaminants and maintain optimal performance.\u003c\/p\u003e\n\n\u003cp\u003eThis filter directly replaces Mercury Mercruiser Quicksilver part numbers \u003cstrong\u003e35-853733A1\u003c\/strong\u003e, \u003cstrong\u003e853733A2\u003c\/strong\u003e, \u003cstrong\u003e35-853733A03\u003c\/strong\u003e, and Tohatsu Nissan part numbers \u003cstrong\u003e346-02230-0\u003c\/strong\u003e, \u003cstrong\u003e3B7-02230-0\u003c\/strong\u003e, \u003cstrong\u003e3AD-02230-0\u003c\/strong\u003e, among others, providing broad cross-brand compatibility.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatible with both EFI (Electronic Fuel Injection) and carbureted engine systems\u003c\/li\u003e\n  \u003cli\u003eFits 2-cylinder and 3-cylinder outboard configurations\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for multiple OEM part numbers across Mercury and Tohatsu brands\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n  \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Mercruiser Quicksilver\u003c\/td\u003e\n        \u003ctd\u003e35-853733A1, 853733A1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Mercruiser Quicksilver\u003c\/td\u003e\n        \u003ctd\u003e35-853733A2, 853733A2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Mercruiser Quicksilver\u003c\/td\u003e\n        \u003ctd\u003e35-853733A03, 853733A03\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Mercruiser Quicksilver\u003c\/td\u003e\n        \u003ctd\u003e8M0088825, 35-8M0088825\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eTohatsu Nissan\u003c\/td\u003e\n        \u003ctd\u003e346-02230-0\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eTohatsu Nissan\u003c\/td\u003e\n        \u003ctd\u003e3B7-02230-0\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eTohatsu Nissan\u003c\/td\u003e\n        \u003ctd\u003e3AD-02230-0\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n  \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eEngine Type\u003c\/th\u003e\n        \u003cth\u003eSerial Number Range\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eEFI 3 cyl\u003c\/td\u003e\n        \u003ctd\u003e25HP\u003c\/td\u003e\n        \u003ctd\u003eEFI\u003c\/td\u003e\n        \u003ctd\u003e0R106999 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eCarb SeaPro\u003c\/td\u003e\n        \u003ctd\u003e25HP\u003c\/td\u003e\n        \u003ctd\u003eCarbureted\u003c\/td\u003e\n        \u003ctd\u003e0R051710 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eEFI 3 cyl\u003c\/td\u003e\n        \u003ctd\u003e30HP\u003c\/td\u003e\n        \u003ctd\u003eEFI\u003c\/td\u003e\n        \u003ctd\u003e0R106999 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e2cyl\u003c\/td\u003e\n        \u003ctd\u003e25HP\u003c\/td\u003e\n        \u003ctd\u003eCarbureted\u003c\/td\u003e\n        \u003ctd\u003e0N055505 \u0026amp; UP\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e2cyl\u003c\/td\u003e\n        \u003ctd\u003e30HP\u003c\/td\u003e\n        \u003ctd\u003eCarbureted\u003c\/td\u003e\n        \u003ctd\u003e0N055505 \u0026amp; UP\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e3cyl\u003c\/td\u003e\n        \u003ctd\u003e40HP\u003c\/td\u003e\n        \u003ctd\u003eCarbureted\u003c\/td\u003e\n        \u003ctd\u003e0N055505 \u0026amp; UP\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Fuel Filter (35-853733A2)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n  \u003cli\u003eDisconnect the fuel line from the engine and relieve any residual fuel pressure in the system. Have a rag or container ready to catch any fuel spillage.\u003c\/li\u003e\n  \u003cli\u003eLocate the old fuel filter, typically positioned inline between the fuel tank and the engine. Note the direction of fuel flow indicated by the arrow on the old filter housing.\u003c\/li\u003e\n  \u003cli\u003eUse pliers or a wrench to loosen the hose clamps securing the fuel lines to the filter inlet and outlet. Carefully slide the fuel lines off the filter.\u003c\/li\u003e\n  \u003cli\u003eRemove the old fuel filter and inspect the fuel lines for cracks, wear, or damage. Replace hoses if necessary.\u003c\/li\u003e\n  \u003cli\u003eInstall the new fuel filter, ensuring the arrow on the filter body points in the direction of fuel flow (from tank to engine). Slide the fuel lines onto the filter inlet and outlet.\u003c\/li\u003e\n  \u003cli\u003eSecure the fuel lines with new or existing hose clamps, tightening them firmly to prevent leaks. Reconnect the fuel line to the engine.\u003c\/li\u003e\n  \u003cli\u003ePrime the fuel system by squeezing the primer bulb until it becomes firm. Start the engine and check for leaks around the filter connections.\u003c\/li\u003e\n  \u003cli\u003eAllow the engine to run for a few minutes and inspect the filter area again. If any leaks are detected, shut off the engine and re-tighten the clamps.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this fuel filter fits my Mercury or Tohatsu engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Check the compatible engine models table above for your horsepower, cylinder count, and serial number range. You can also cross-reference your original part number with the part number table to ensure compatibility.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my outboard fuel filter?\u003c\/strong\u003e\u003cbr\u003e\nA: Replace your fuel filter every 100 hours of operation or annually, whichever comes first. If you notice performance issues like rough idling, hard starting, or loss of power, inspect and replace the filter immediately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs of a clogged or failing fuel filter?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include difficulty starting the engine, sputtering or stalling at high RPM, reduced top speed, and poor acceleration. A visual inspection may reveal debris or discoloration inside the filter housing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this filter on both carbureted and EFI engines?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this fuel filter is designed to fit both carbureted and EFI (Electronic Fuel Injection) Mercury and Tohatsu outboards within the specified horsepower and serial number ranges.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM part or an aftermarket replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n  \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51083506188601,"sku":"23FF681","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/35-8M0088825_2.jpg?v=1755257076"},{"product_id":"3g2-03100-2-carburetor-assembly-for-mercury-mariner-tohatsu-nissan-m9-9-m15-m18-ns9-9d2-ns15d2-ns18e2-jlm-marine","title":"3G2-03100-2 Carburetor Assembly for Mercury Mariner Tohatsu Nissan M9.9 M15 M18 NS9.9D2 NS15D2 NS18E2 | JLM Marine","description":"\u003ch2\u003e3G2-03100-2 Carburetor Assembly for Mercury Mariner Tohatsu Nissan M9.9 M15 M18 NS9.9D2 NS15D2 NS18E2\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket replacement carburetor assembly is engineered for \u003cstrong\u003eMercury Mariner 9.9 HP, 15 HP, and 18 HP 2-stroke\u003c\/strong\u003e outboard engines, as well as compatible \u003cstrong\u003eTohatsu and Nissan M9.9, M15, M18, NS9.9D2, NS15D2, and NS18E2\u003c\/strong\u003e models from 2003 onward. It delivers reliable fuel delivery and precise air-fuel mixing for consistent engine performance.\u003c\/p\u003e\n\u003cp\u003eThis carburetor directly replaces OEM part number \u003cstrong\u003e3G2-03100-2\u003c\/strong\u003e and supersedes multiple earlier versions including 3G2-03100-0M, 3G2-03100-1M, and 3G2-03100-2M, offering broad compatibility across Mercury, Tohatsu, and Nissan 2-stroke outboards.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncludes carburetor assembly and mounting gasket (27-803699001)\u003c\/li\u003e\n\u003cli\u003eDesigned for 2-stroke outboard engines only\u003c\/li\u003e\n\u003cli\u003eVerify OEM part number and photos before purchase—older pre-1996 models may require different carburetors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eSuperseded By\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\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3G2031000M\u003c\/td\u003e\n\u003ctd\u003e3G2031005M\u003c\/td\u003e\n\u003ctd\u003eCarburetor Assy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3G2031001M\u003c\/td\u003e\n\u003ctd\u003e3G2031005M\u003c\/td\u003e\n\u003ctd\u003eCarburetor Assy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3G2031002M\u003c\/td\u003e\n\u003ctd\u003e3G2031005M\u003c\/td\u003e\n\u003ctd\u003eCarburetor Assy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3G2031003M\u003c\/td\u003e\n\u003ctd\u003e3G2031005M\u003c\/td\u003e\n\u003ctd\u003eCarburetor Assy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3G2031004M\u003c\/td\u003e\n\u003ctd\u003e3G2031005M\u003c\/td\u003e\n\u003ctd\u003eCarburetor Assy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3G2031005M\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eCurrent Carburetor Assy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e3G2-03100-2\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eOEM Reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\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\u003e9.9 HP \/ 15 HP \/ 18 HP\u003c\/td\u003e\n\u003ctd\u003e9.9 \/ 15 \/ 18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003+\u003c\/td\u003e\n\u003ctd\u003ePre-1996 models use different carburetor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM9.9, M15, M18 series\u003c\/td\u003e\n\u003ctd\u003e9.9 \/ 15 \/ 18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eCARBURETOR - FUEL FILTER section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM9.9D2\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eCARBURETOR - FUEL FILTER section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM15D2\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eCARBURETOR - FUEL FILTER section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM18E2\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eCARBURETOR - FUEL FILTER section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNS9.9D2\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eCARBURETOR - FUEL FILTER section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNS15D2\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eCARBURETOR - FUEL FILTER section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNS18E2\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eCARBURETOR - FUEL FILTER section\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\" style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e3G2-03100-2\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\u003e9.9 HP, 15 HP, 18 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Year\u003c\/td\u003e\n\u003ctd\u003e2003 and newer (not for pre-1996 models)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAftermarket Replacement Carburetor 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\n\u003cstrong\u003eCarburetor Assembly\u003c\/strong\u003e × 1\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: red;\"\u003e\u003cstrong\u003ePaper Gasket (27-803699001)\u003c\/strong\u003e × 1\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the fuel line and remove the old carburetor from the engine, taking note of linkage and throttle connections.\u003c\/li\u003e\n\u003cli\u003eClean the mounting surface on the intake manifold to ensure a proper seal.\u003c\/li\u003e\n\u003cli\u003eInstall the new paper gasket (27-803699001) onto the mounting surface. Ensure it is aligned correctly with all bolt holes.\u003c\/li\u003e\n\u003cli\u003ePosition the new carburetor assembly onto the gasket and secure it with the original mounting bolts, tightening evenly in a cross pattern.\u003c\/li\u003e\n\u003cli\u003eReconnect all fuel lines, throttle linkages, and choke cables, ensuring they move freely without binding.\u003c\/li\u003e\n\u003cli\u003ePrime the fuel system and check for leaks around the carburetor and fuel connections.\u003c\/li\u003e\n\u003cli\u003eStart the engine and allow it to warm up. Adjust idle speed and fuel mixture screws as needed for smooth operation.\u003c\/li\u003e\n\u003cli\u003eTest the engine at various throttle positions to confirm proper acceleration and response.\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 engine?\u003c\/strong\u003e\u003cbr\u003eA: Verify your engine model, horsepower, and year against the compatibility table above. Check your OEM part number (3G2-03100-0M, 3G2-03100-1M, 3G2-03100-2M, or 3G2-03100-2) to ensure a match. Note that older 2-stroke models manufactured before 1996 use a different carburetor design.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are common signs that my carburetor needs replacement?\u003c\/strong\u003e\u003cbr\u003eA: Symptoms include difficulty starting, rough idling, poor acceleration, excessive fuel consumption, black smoke from the exhaust, or fuel leaking from the carburetor body. If adjustment and cleaning do not resolve these issues, replacement is recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace or service my carburetor?\u003c\/strong\u003e\u003cbr\u003eA: Carburetors do not have a fixed replacement interval. Regular cleaning and adjustment during seasonal maintenance can extend life. Replace when performance issues persist despite cleaning, or if internal components are worn or damaged.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this carburetor on a 4-stroke engine?\u003c\/strong\u003e\u003cbr\u003eA: No. This carburetor is designed exclusively for 2-stroke outboard engines. Installing it on a 4-stroke engine will result in improper fuel delivery and engine damage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between this aftermarket carburetor and the OEM version?\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":51924871676217,"sku":"19CA3G2","price":79.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/JLM19CA3G2-1_c0382a05-1e37-4360-9530-46fc338b87ef.jpg?v=1770528686"},{"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"},{"product_id":"8m0151469-maintenance-kit-for-mercury-15hp-20hp-efi-jlm-marine-1","title":"8M0151469 Maintenance Kit for Mercury 15HP 20HP EFI | JLM Marine","description":"\u003ch2\u003e8M0151469 Maintenance Kit for Mercury 15HP 20HP EFI | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive maintenance kit is engineered for \u003cstrong\u003eMercury 15-20 HP EFI outboard engines\u003c\/strong\u003e with serial numbers \u003cstrong\u003e0R833820 and above\u003c\/strong\u003e. It consolidates all essential service components—impeller, thermostat, filters, gaskets, and seals—into one complete package, streamlining your routine maintenance and ensuring reliable performance on the water.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement for OEM Part Number:\u003c\/strong\u003e 8M0151469. This aftermarket kit delivers OEM-equivalent quality at a competitive price, covering everything you need for a full-service interval in a single box.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIncludes complete water pump rebuild components, fuel and oil filters, and thermostat assembly\u003c\/li\u003e\n  \u003cli\u003eDesigned specifically for Mercury EFI models to ensure precise fitment and performance\u003c\/li\u003e\n  \u003cli\u003eGear oil pump included for complete 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\" style=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eBrand\u003c\/th\u003e\n      \u003cth\u003ePart Number\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMercury\u003c\/td\u003e\n      \u003ctd\u003e8M0151469\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=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eBrand\u003c\/th\u003e\n      \u003cth\u003eModel\u003c\/th\u003e\n      \u003cth\u003eRated HP\u003c\/th\u003e\n      \u003cth\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\u003eEFI\u003c\/td\u003e\n      \u003ctd\u003e15-20 HP\u003c\/td\u003e\n      \u003ctd\u003e0R833820 \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=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n      \u003cth\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOEM Part Number\u003c\/td\u003e\n      \u003ctd\u003e8M0151469\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eApplication\u003c\/td\u003e\n      \u003ctd\u003eMercury 15-20 HP EFI Outboards\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSerial Number Range\u003c\/td\u003e\n      \u003ctd\u003e0R833820 \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 \u003cstrong\u003e18 individual components\u003c\/strong\u003e to perform a complete service on your Mercury EFI outboard:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8M0134493\u003c\/strong\u003e - Housing Base x1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8M0137347\u003c\/strong\u003e - Key x1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8M0135804\u003c\/strong\u003e - Gasket x1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8M0135806\u003c\/strong\u003e - Gasket x1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8M0135805\u003c\/strong\u003e - Plate x1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e803751\u003c\/strong\u003e - Insert Cup x1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8036674\u003c\/strong\u003e - Seal x1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8M0134492\u003c\/strong\u003e - Housing x1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e803752\u003c\/strong\u003e - Oil Seal x1\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e8M0135803\u003c\/strong\u003e - Impeller x1\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e8M0139434\u003c\/strong\u003e - Thermostat x1\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e27-853702005\u003c\/strong\u003e - Thermostat Gasket x1\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-8M0134466\u003c\/strong\u003e - Fuel Filter x1\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e35-8M0162831\u003c\/strong\u003e - Oil Filter x1\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8M0082880\u003c\/strong\u003e - Drain Gasket x2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e12-895146\u003c\/strong\u003e - Gasket x1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8150264\u003c\/strong\u003e - Cotter Pin x1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e24OP149\u003c\/strong\u003e - Gear Oil Pump x1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cspan style=\"color:red;\"\u003eNote: This kit covers both upper engine maintenance (filters, thermostat) and lower unit service (water pump, gear oil pump).\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Disconnect the fuel line and remove the engine cowling. Gather all necessary tools including screwdrivers, wrenches, and a torque wrench.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemove Lower Unit:\u003c\/strong\u003e Drain the gear oil completely, then unbolt and carefully slide off the lower unit from the midsection. Support the lower unit to prevent damage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisassemble Water Pump:\u003c\/strong\u003e Remove the water pump housing base and carefully extract the old impeller, noting its rotational direction. Clean all surfaces thoroughly and inspect for corrosion or damage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall New Impeller:\u003c\/strong\u003e Lubricate the new impeller with glycerin or soapy water, then insert it into the housing with blades oriented correctly. Install the insert cup, plate, and gaskets in proper sequence.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReassemble Water Pump:\u003c\/strong\u003e Position the housing and housing base with new gaskets, ensuring proper alignment with the drive shaft. Secure all fasteners to manufacturer torque specifications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace Thermostat:\u003c\/strong\u003e Locate the thermostat housing on the cylinder head and remove the cover. Install the new thermostat with the spring facing inward and use the new gasket to seal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChange Fuel Filter:\u003c\/strong\u003e Locate the inline fuel filter and use the gear oil pump to relieve fuel system pressure if needed. Replace with the new fuel filter, ensuring flow direction matches the arrow on the filter body.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChange Oil Filter:\u003c\/strong\u003e Remove the old oil filter using an appropriate wrench and apply a thin layer of fresh oil to the new filter's O-ring. Install the new oil filter hand-tight, then turn an additional 3\/4 turn.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReinstall Lower Unit:\u003c\/strong\u003e Apply new drain gaskets and refill the lower unit with fresh gear oil using the provided pump. Slide the lower unit back onto the midsection, aligning the drive shaft splines carefully.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecure Lower Unit:\u003c\/strong\u003e Install all mounting bolts and torque to specification. Insert the new cotter pin to secure critical fasteners as directed in your service manual.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinal Checks:\u003c\/strong\u003e Reinstall the engine cowling and reconnect the fuel line. Run the engine in a test tank or on-water to verify proper water flow from the telltale and check for leaks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDocumentation:\u003c\/strong\u003e Record the service date and engine hours in your maintenance log. Dispose of old filters and fluids according to local environmental regulations.\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 15-20 HP EFI model with serial number 0R833820 or higher. You can find your serial number on the mounting bracket or use the Mercury Serial Number Guide linked above to decode your engine specifications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace these maintenance items?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends annual replacement of the impeller, thermostat, and filters, or every 100 hours of operation, whichever comes first. More frequent service may be needed in sandy or debris-filled water conditions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my impeller or thermostat is failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Weak or absent water flow from the telltale, engine overheating, erratic temperature readings, or pieces of rubber in the cooling system indicate impeller failure. Thermostat issues typically manifest as slow warm-up or overheating at idle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this kit myself or do I need a marine mechanic?\u003c\/strong\u003e\u003cbr\u003e\nA: If you have basic mechanical skills and follow the service manual closely, DIY installation is feasible. However, proper torque specifications and impeller orientation are critical—professional installation is recommended if you're unfamiliar with outboard service procedures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include engine oil or lower unit gear oil?\u003c\/strong\u003e\u003cbr\u003e\nA: No, this kit includes the oil filter and gear oil pump, but fluids must be purchased separately. Refer to your owner's manual for the correct oil type and capacity for your specific engine model.\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":52418275508537,"sku":"23KM774-4N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-23KM774-4N_b800caf6-c454-465b-8e92-c05077092f24.png?v=1776686804"},{"product_id":"8m0251124-maintenance-kit-for-mercury-25hp-30hp-jlm-marine","title":"8M0251124 Maintenance Kit for Mercury 25HP 30HP | JLM Marine","description":"\u003ch2\u003e8M0251124 Maintenance Kit for Mercury 25HP 30HP | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive maintenance kit is engineered for Mercury 25HP and 30HP Japanese model outboards, delivering all essential components for a complete service interval in one package. Designed to restore and maintain peak engine performance, this kit simplifies routine maintenance and ensures reliable operation on the water.\u003c\/p\u003e\n\n\u003cp\u003eThis kit directly replaces OEM part number \u003cstrong\u003e8M0251124\u003c\/strong\u003e, providing an aftermarket solution that meets factory specifications. It includes the water pump rebuild components, thermostat assembly, fuel filter, drain gaskets, and gear oil pump—everything needed for a thorough maintenance service.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete service kit with \u003cstrong\u003e14 components\u003c\/strong\u003e including water pump parts, thermostat, fuel filter, and gear oil pump\u003c\/li\u003e\n\u003cli\u003eFits Mercury \u003cstrong\u003e25HP and 30HP Japanese models\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM part number \u003cstrong\u003e8M0251124\u003c\/strong\u003e\n\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\u003e8M0251124\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\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eJapanese Models\u003c\/td\u003e\n\u003ctd\u003e25HP \/ 30HP\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\u003e8M0251124\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eMercury 25HP \/ 30HP Japanese Models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Type\u003c\/td\u003e\n\u003ctd\u003eMaintenance Kit (Water Pump, Thermostat, Fuel Filter, Gear Oil Pump)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis maintenance kit includes the following components:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e161572\u003c\/strong\u003e - Insert Cup × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e47-16154-1\u003c\/strong\u003e - \u003cspan style=\"color:red;\"\u003eImpeller × 1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-161602\u003c\/strong\u003e - Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e161592\u003c\/strong\u003e - Plate × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-161582\u003c\/strong\u003e - Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e28-161551\u003c\/strong\u003e - Key × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e910103-5652\u003c\/strong\u003e - Screw × 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M0119207\u003c\/strong\u003e - \u003cspan style=\"color:red;\"\u003eThermostat × 1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-853702005\u003c\/strong\u003e - Thermostat Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35-8M0088825\u003c\/strong\u003e - \u003cspan style=\"color:red;\"\u003eFuel Filter × 1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M02046936\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\u003e27-828816\u003c\/strong\u003e - Oil Drain Screw Gasket × 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24OP149\u003c\/strong\u003e - \u003cspan style=\"color:red;\"\u003eGear Oil Pump × 1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003eDisconnect the battery and ensure the engine is cool before beginning work. Gather all tools and components from the kit.\u003c\/li\u003e\n\u003cli\u003eRemove the lower unit from the outboard following your engine's service manual. Drain the gear oil completely and inspect for metal particles or contamination.\u003c\/li\u003e\n\u003cli\u003eRemove the water pump housing cover and extract the old impeller, plate, and insert cup. Clean all surfaces thoroughly, removing old gasket material and debris.\u003c\/li\u003e\n\u003cli\u003eInstall the new insert cup (161572) into the pump housing, ensuring it seats properly. Place the new impeller (47-16154-1) with blades oriented in the correct rotation direction.\u003c\/li\u003e\n\u003cli\u003eInsert the key (28-161551) into the driveshaft slot, then position the new plate (161592) over the impeller. Apply a thin layer of marine grease to the impeller blades for easier installation.\u003c\/li\u003e\n\u003cli\u003eInstall the new gaskets (27-161602 and 27-161582) on their respective surfaces. Reattach the pump housing cover using the four new screws (910103-5652), tightening in a cross pattern.\u003c\/li\u003e\n\u003cli\u003eRemove the old thermostat from the powerhead and clean the seating area. Install the new thermostat (8M0119207) with the new gasket (27-853702005), ensuring correct orientation.\u003c\/li\u003e\n\u003cli\u003eReplace the fuel filter (35-8M0088825) on the fuel line, ensuring proper flow direction as marked on the filter body. Tighten connections securely to prevent leaks.\u003c\/li\u003e\n\u003cli\u003eInstall the new drain gaskets (8M02046936) on the lower unit drain and vent plugs. Replace the oil drain screw gasket (27-828816) as needed.\u003c\/li\u003e\n\u003cli\u003eReattach the lower unit to the outboard, aligning the driveshaft and water tube carefully. Secure all mounting bolts to factory torque specifications.\u003c\/li\u003e\n\u003cli\u003eUsing the included gear oil pump (24OP149), refill the lower unit with the manufacturer-recommended gear oil until it flows from the vent hole. Install the vent plug first, then the drain plug with the cotter pin (8150264).\u003c\/li\u003e\n\u003cli\u003eReconnect the battery and perform a water test with the engine in a test tank or on muffs. Check for proper water flow from the telltale and inspect all connections 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 kit fits my Mercury engine?\u003c\/strong\u003e\u003cbr\u003e\nA: This kit is designed specifically for Mercury 25HP and 30HP Japanese models. Verify your engine's model designation and check that your current part number is 8M0251124. If you're unsure, consult your engine's service manual or use the Mercury serial number guide linked above to identify your exact model.\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 servicing the water pump impeller annually or every 100 hours of operation, whichever comes first. The thermostat and fuel filter should be inspected during this service and replaced if showing wear. Gear oil should be changed at least once per season or every 100 hours.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my water pump impeller needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include reduced water flow from the telltale, engine overheating, steam from the powerhead, or weak stream during operation. If you notice any of these signs, inspect and replace the impeller immediately to prevent engine damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this kit myself or do I need a professional?\u003c\/strong\u003e\u003cbr\u003e\nA: If you have mechanical experience and the proper tools, you can install this kit following your engine's service manual. The water pump and thermostat replacement require removing the lower unit, which demands careful alignment during reassembly. Professional installation is recommended if you're unfamiliar with outboard servicing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: OEM vs. Aftermarket?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418275606841,"sku":"23KM775-2N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-23KM775-2N_757b278b-0e25-4ecc-9154-53f0caf59f75.png?v=1776686807"},{"product_id":"8m0251122-service-kit-for-mercury-15hp-18hp-jlm-marine","title":"8M0251122 Service Kit for Mercury 15HP 18HP | JLM Marine","description":"\u003ch2\u003e8M0251122 Service Kit for Mercury 15HP 18HP | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive service kit is engineered for \u003cstrong\u003eMercury 15HP and 18HP outboard engines\u003c\/strong\u003e, specifically the 18HP 2-cylinder International models (serial number 0N001590 \u0026amp; Up) and 15HP Japanese models. It includes all essential components for routine maintenance—impeller, thermostat, gaskets, fuel filter, anode, and fasteners—to keep your engine running at peak performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement for OEM Part Number:\u003c\/strong\u003e 8M0251122. This aftermarket kit delivers OEM-equivalent fit and function at a competitive price, ensuring reliable service intervals for your Mercury outboard.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eComplete 13-piece service kit with impeller, thermostat, fuel filter, and all necessary gaskets\u003c\/li\u003e\n  \u003cli\u003eIncludes gear oil pump and anode for comprehensive maintenance coverage\u003c\/li\u003e\n  \u003cli\u003eDesigned for Mercury 2-cylinder outboards with serial number 0N001590 and 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 brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eBrand\u003c\/th\u003e\n      \u003cth\u003ePart Number\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMercury\u003c\/td\u003e\n      \u003ctd\u003e8M0251122\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n  \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e2cyl International\u003c\/td\u003e\n        \u003ctd\u003e18HP\u003c\/td\u003e\n        \u003ctd\u003eSerial Number 0N001590 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eJapanese Models\u003c\/td\u003e\n        \u003ctd\u003e15HP\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n      \u003cth\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOEM Part Number\u003c\/td\u003e\n      \u003ctd\u003e8M0251122\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eApplication\u003c\/td\u003e\n      \u003ctd\u003eMercury 15HP \u0026amp; 18HP Outboards\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eKit Type\u003c\/td\u003e\n      \u003ctd\u003eComplete Service Kit\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNumber of Components\u003c\/td\u003e\n      \u003ctd\u003e13 pieces (multiple quantities included)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis service kit includes 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 (critical wear component)\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\u003e804540\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\u003e35-8M0088825\u003c\/strong\u003e – Fuel Filter × 1\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e12-191833\u003c\/strong\u003e – Drain Screw Gasket × 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e27-828816\u003c\/strong\u003e – Oil Drain Screw Gasket × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e803731\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\u003cp\u003eFollow these steps to install the service kit components. Always refer to your Mercury service manual for model-specific procedures:\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Disconnect the fuel line and remove the lower unit from the engine according to your service manual. Drain all gear oil into a suitable container.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemove Old Impeller:\u003c\/strong\u003e Access the water pump housing and carefully extract the old impeller (803748), guide plate (803753), and insert (803751). Inspect the housing for wear or damage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean Surfaces:\u003c\/strong\u003e Thoroughly clean all gasket surfaces on the pump housing and lower unit. Remove old gasket material to ensure proper sealing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall New Impeller Assembly:\u003c\/strong\u003e Lubricate the new impeller with glycerin or soapy water, then install it with the key (803749), insert, and guide plate in the correct orientation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace Thermostat:\u003c\/strong\u003e Remove the old thermostat (804540) from its housing and clean the mating surface. Install the new thermostat with a fresh gasket (27-853702005).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall Gaskets:\u003c\/strong\u003e Position the new water pump gasket (8M0075040) on the lower unit housing. Ensure proper alignment before reassembly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReassemble Lower Unit:\u003c\/strong\u003e Carefully reinstall the lower unit onto the engine, torquing all screws (823042046) to factory specifications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace Drain Screw Gaskets:\u003c\/strong\u003e Install new drain screw gaskets (12-191833) and oil drain screw gasket (27-828816) on all drain plugs before refilling.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRefill Gear Oil:\u003c\/strong\u003e Use the included gear oil pump (24OP149) to refill the lower unit with Mercury Premium Gear Lube or equivalent. Fill until oil appears at the upper vent hole.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace Fuel Filter:\u003c\/strong\u003e Locate the inline fuel filter and replace it with the new filter (35-8M0088825). Ensure all connections are secure and free of leaks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall Anode:\u003c\/strong\u003e Replace the old anode (803731) with the new one, ensuring proper electrical contact for corrosion protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTest Run:\u003c\/strong\u003e Reconnect the fuel line, prime the system, and run the engine in a test tank or on-water. Check for proper water flow from the tell-tale and inspect for any 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 kit fits my Mercury engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Check your engine's serial number plate—this kit fits 18HP 2-cylinder International models with serial number 0N001590 and up, as well as 15HP Japanese models. Cross-reference your serial number with the compatibility table above or consult your Mercury dealer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the impeller and service components?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends replacing the water pump impeller every 2–3 years or 200–300 hours of operation, whichever comes first. The thermostat, fuel filter, and gaskets should be replaced at the same interval or if you notice overheating, poor water flow, or fuel delivery issues.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my impeller or thermostat has failed?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include weak or no water flow from the tell-tale, engine overheating alarms, steam from the engine, or reduced cooling performance. If you notice any of these, inspect and replace the impeller and thermostat immediately to prevent engine damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse the old gaskets and screws?\u003c\/strong\u003e\u003cbr\u003e\nA: No, always replace gaskets with new ones to ensure proper sealing and prevent leaks. The kit includes all necessary gaskets and screws—reusing old components can lead to water intrusion, oil leaks, and premature part failure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What type of gear oil should I use with the included pump?\u003c\/strong\u003e\u003cbr\u003e\nA: Use Mercury Premium Gear Lube or a high-quality marine gear oil rated for outboard lower units. The included pump (24OP149) makes refilling easy and minimizes mess.\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":52418325479737,"sku":"25KM264-2N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-25KM264-2N_e09c2dfe-14ab-45b2-8d92-06840cdc018a.png?v=1776686856"},{"product_id":"3nv-87500-0-service-kit-for-tohatsu-mfs25c-mfs30c-mfs25d-mfs30d-jlm-marine","title":"3NV-87500-0 Service Kit for Tohatsu MFS25C MFS30C MFS25D MFS30D | JLM Marine","description":"\u003ch2\u003eService Kit for Tohatsu MFS25C, MFS30C, MFS25D, MFS30D Outboard Engines\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive service kit is engineered for \u003cstrong\u003eTohatsu MFS25C, MFS30C, MFS25D, and MFS30D\u003c\/strong\u003e outboard engines, delivering all the essential components needed for a complete routine maintenance overhaul. Whether you're performing seasonal servicing or addressing wear on critical cooling and filtration systems, this kit ensures your engine runs at peak performance.\u003c\/p\u003e\n\n\u003cp\u003eThis kit directly replaces OEM part number \u003cstrong\u003e3NV-87500-0\u003c\/strong\u003e, providing an aftermarket solution that meets OEM specifications. It includes water pump components, thermostats, filters, gaskets, and hardware—everything required for a thorough service in one convenient package.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIncludes complete water pump rebuild components (impeller, gaskets, insert cup, plate, key, and hardware)\u003c\/li\u003e\n  \u003cli\u003eFeatures dual thermostat assemblies with gaskets for comprehensive cooling system maintenance\u003c\/li\u003e\n  \u003cli\u003eContains fuel filter, oil filter, drain gaskets, and gear oil pump for full fluid system service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eBrand\u003c\/th\u003e\n      \u003cth\u003ePart Number\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTohatsu\u003c\/td\u003e\n      \u003ctd\u003e3NV-87500-0\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.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n  \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eTohatsu\u003c\/td\u003e\n        \u003ctd\u003eMFS25\/30C\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eTohatsu\u003c\/td\u003e\n        \u003ctd\u003eMFS25\/30D\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n      \u003cth\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOEM Number\u003c\/td\u003e\n      \u003ctd\u003e3NV-87500-0\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCompatible Models\u003c\/td\u003e\n      \u003ctd\u003eTohatsu MFS25C, MFS30C, MFS25D, MFS30D\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eKit Type\u003c\/td\u003e\n      \u003ctd\u003eComplete Service\/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 service kit includes the following components:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e161572\u003c\/strong\u003e (Insert Cup) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e47-16154-1\u003c\/strong\u003e (Impeller) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e27-161602\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e161592\u003c\/strong\u003e (Plate) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e27-161582\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e28-161551\u003c\/strong\u003e (Key) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e910103-5652\u003c\/strong\u003e (Screw) × 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8M0119207\u003c\/strong\u003e (Thermostat) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e27-853702005\u003c\/strong\u003e (Thermostat Gasket) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e35-8M0088825\u003c\/strong\u003e (Fuel Filter) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e35-8M0162831\u003c\/strong\u003e (Oil Filter) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8M007119\u003c\/strong\u003e (Drain Gasket) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8M02046936\u003c\/strong\u003e (Drain Gasket) × 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e12-895146\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8150264\u003c\/strong\u003e (Cotter Pin) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e24OP149\u003c\/strong\u003e (Gear Oil Pump) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3R3-01030-0\u003c\/strong\u003e (Thermostat) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e346-01032-0\u003c\/strong\u003e (Thermostat Gasket) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3AD-02230-0\u003c\/strong\u003e (Fuel Filter) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3BJ-07615-0\u003c\/strong\u003e (Oil Filter) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2049\u003c\/strong\u003e (Drain Gasket) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2492\u003c\/strong\u003e (Drain Gasket) × 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3R3-07406-0\u003c\/strong\u003e (Gasket) × 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e951503-0322\u003c\/strong\u003e (Cotter Pin) × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This kit contains duplicate components with different part numbers to ensure compatibility across MFS25\/30C and MFS25\/30D engine variants. Verify which components apply to your specific model before installation.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Gather all necessary tools including screwdrivers, wrenches, and a service manual for your specific Tohatsu model. Ensure the engine is off and cool before beginning work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater Pump Disassembly:\u003c\/strong\u003e Remove the lower unit and locate the water pump housing. Carefully remove the screws securing the housing cover using the appropriate size driver.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemove Old Components:\u003c\/strong\u003e Extract the old impeller, gaskets, insert cup, and plate. Inspect the housing for debris, corrosion, or scoring that may affect seal integrity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall Insert Cup and Plate:\u003c\/strong\u003e Place the new insert cup (161572) and plate (161592) into the housing, ensuring proper orientation per your service manual.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall Impeller:\u003c\/strong\u003e Lubricate the new impeller (47-16154-1) with water pump grease and carefully insert it, bending the vanes in the direction of rotation. Install the key (28-161551) in its slot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall Gaskets and Reassemble:\u003c\/strong\u003e Position the new gaskets (27-161602, 27-161582) and secure the water pump housing with the provided screws (910103-5652). Torque to specification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace Thermostats:\u003c\/strong\u003e Locate the thermostat housings and remove the old thermostats. Install the new thermostats (8M0119207, 3R3-01030-0) with fresh gaskets (27-853702005, 346-01032-0).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace Fuel Filter:\u003c\/strong\u003e Disconnect the fuel line and remove the old fuel filter. Install the new fuel filter (35-8M0088825 or 3AD-02230-0) ensuring proper flow direction.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace Oil Filter:\u003c\/strong\u003e Drain the engine oil and remove the old oil filter. Install the new oil filter (35-8M0162831 or 3BJ-07615-0) with a light coating of fresh oil on the gasket.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace Drain Gaskets:\u003c\/strong\u003e When draining gear oil, replace all drain plug gaskets (8M007119, 8M02046936, 2049, 2492) to prevent leaks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRefill Fluids:\u003c\/strong\u003e Use the included gear oil pump (24OP149) to refill the lower unit with the manufacturer-recommended gear oil. Refill engine oil to the proper level and reconnect fuel lines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinal Inspection:\u003c\/strong\u003e Reinstall the lower unit, install the cotter pins (8150264, 951503-0322) where required, and perform a thorough visual inspection. Start the engine and check for proper water flow, leaks, and normal operating temperature.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this service kit fits my Tohatsu engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify that your engine model is MFS25C, MFS30C, MFS25D, or MFS30D. Cross-reference the OEM part number 3NV-87500-0 with your engine's service manual or parts diagram to ensure compatibility.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I perform this service and replace these components?\u003c\/strong\u003e\u003cbr\u003e\nA: Tohatsu recommends servicing the water pump impeller annually or every 100 operating hours, whichever comes first. Filters and thermostats should be inspected annually and replaced as needed, typically every 1–2 years depending on usage conditions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my water pump or thermostat needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include engine overheating, weak or no water discharge from the telltale, steam from the engine, or inconsistent operating temperatures. If you observe any of these signs, inspect and replace the water pump and thermostat immediately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why does this kit include duplicate components with different part numbers?\u003c\/strong\u003e\u003cbr\u003e\nA: The MFS25\/30C and MFS25\/30D models use slightly different components for certain items like thermostats, filters, and gaskets. This kit includes both variants to ensure complete coverage; use the components that match your specific engine model as shown in your service manual.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this service kit myself or do I need a professional?\u003c\/strong\u003e\u003cbr\u003e\nA: If you have mechanical experience and the proper tools, you can perform this service following the installation guide and your engine's service manual. However, professional installation is recommended if you are unfamiliar with outboard maintenance to ensure safety and proper function.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM or aftermarket service kit?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n  \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418416705849,"sku":"23KM775-4N","price":68.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-23KM775-4N_9edc8119-8cef-4244-8ed7-22376c8e1f49.png?v=1776686930"}],"url":"https:\/\/jlmmarine.com\/collections\/mercury-9-9-2-cyl-international-sn-0-059858.oembed","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}