{"product_id":"676-44315-00-water-pump-impeller-gasket-for-yamaha-omc-c40-235-240-jlm-marine","title":"676-44315-00 Water Pump Impeller Gasket for Yamaha OMC C40 235 240 | JLM Marine","description":"\u003ch2\u003eWater Pump Impeller Gasket – Fits Yamaha 2-Stroke 40 HP \u0026amp; OMC 235\/240 Stern Drive\u003c\/h2\u003e\n\n\u003cp\u003eThis water pump impeller gasket is engineered to fit Yamaha 2-stroke 40 HP C40 outboard motors (1990–1997) and OMC Cobra stern drive models 235 (1971, 1975–1977) and 240 (1978). It provides a reliable seal for your water pump housing, ensuring proper cooling system performance and preventing leaks.\u003c\/p\u003e\n\n\u003cp\u003eThis gasket directly replaces OEM part numbers \u003cstrong\u003e676-44315-00\u003c\/strong\u003e, \u003cstrong\u003e676-44315-A0\u003c\/strong\u003e, and \u003cstrong\u003e676-44315-A1\u003c\/strong\u003e across multiple Yamaha and OMC applications, offering broad compatibility for your maintenance and repair needs.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDirect replacement for Yamaha and OMC water pump assemblies\u003c\/li\u003e\n  \u003cli\u003ePrecision-cut design for secure sealing and easy installation\u003c\/li\u003e\n  \u003cli\u003eEssential component for water pump service and overhaul\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 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      \u003cth\u003eNotes\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eYamaha\u003c\/td\u003e\n      \u003ctd\u003e676-44315-00\u003c\/td\u003e\n      \u003ctd\u003ePrimary OEM number\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eYamaha\u003c\/td\u003e\n      \u003ctd\u003e676-44315-A0\u003c\/td\u003e\n      \u003ctd\u003eSuperseded equivalent\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eYamaha\u003c\/td\u003e\n      \u003ctd\u003e676-44315-A1\u003c\/td\u003e\n      \u003ctd\u003eSuperseded equivalent\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 Yamaha owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-serial-number-guide-2025\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-parts-diagrams-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n  \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha Outboard\u003c\/td\u003e\n        \u003ctd\u003eC40\u003c\/td\u003e\n        \u003ctd\u003e40 HP\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1990-1991\u003c\/td\u003e\n        \u003ctd\u003e676-44315-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha Outboard\u003c\/td\u003e\n        \u003ctd\u003eC40\u003c\/td\u003e\n        \u003ctd\u003e40 HP\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1992-1997\u003c\/td\u003e\n        \u003ctd\u003e676-44315-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC Cobra Stern Drive\u003c\/td\u003e\n        \u003ctd\u003e235\u003c\/td\u003e\n        \u003ctd\u003e235\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e1971\u003c\/td\u003e\n        \u003ctd\u003e676-44315-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC Cobra Stern Drive\u003c\/td\u003e\n        \u003ctd\u003e235\u003c\/td\u003e\n        \u003ctd\u003e235\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e1975-1977\u003c\/td\u003e\n        \u003ctd\u003e676-44315-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC Cobra Stern Drive\u003c\/td\u003e\n        \u003ctd\u003e240\u003c\/td\u003e\n        \u003ctd\u003e240\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e1978\u003c\/td\u003e\n        \u003ctd\u003e676-44315-00\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\u003ePart Type\u003c\/td\u003e\n      \u003ctd\u003eWater Pump Impeller Gasket\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOEM Part Number\u003c\/td\u003e\n      \u003ctd\u003e676-44315-00\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eApplication\u003c\/td\u003e\n      \u003ctd\u003eYamaha Outboard 2-Stroke 40 HP, OMC Stern Drive 235\/240\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMaterial\u003c\/td\u003e\n      \u003ctd\u003eMarine-grade gasket material\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis kit includes the following component:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Water Pump Impeller Gasket (676-44315-00)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and flush the cooling system before beginning work. Ensure the engine is completely cool.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit from the outboard or stern drive according to your service manual. Locate the water pump housing assembly.\u003c\/li\u003e\n  \u003cli\u003eDisassemble the water pump housing and remove the old impeller gasket. Clean all mating surfaces thoroughly to remove debris, old gasket material, and residue.\u003c\/li\u003e\n  \u003cli\u003eInspect the water pump housing and impeller for wear, cracks, or damage. Replace worn components as needed.\u003c\/li\u003e\n  \u003cli\u003ePosition the new gasket (676-44315-00) onto the water pump housing, aligning all mounting holes and ports. Ensure proper orientation.\u003c\/li\u003e\n  \u003cli\u003eReinstall the impeller and upper housing components per your service manual specifications. Torque all fasteners to manufacturer recommendations.\u003c\/li\u003e\n  \u003cli\u003eReassemble the lower unit and reattach it to the motor. Double-check all connections and fasteners.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery and test the cooling system by running the engine in a test tank or on muffs. Verify proper water flow and check for leaks around the gasket.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this gasket fits my specific engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine model and year with the compatibility table above. Verify your current gasket matches part number 676-44315-00, 676-44315-A0, or 676-44315-A1 to ensure proper fit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the water pump impeller gasket?\u003c\/strong\u003e\u003cbr\u003e\nA: Replace the gasket every time you service or rebuild your water pump assembly. Most manufacturers recommend water pump service every 2–3 years or 200–300 hours of operation, whichever comes first.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my water pump gasket has failed?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include overheating, reduced water flow from the tell-tale, visible coolant leaks around the lower unit, or steam from the engine. If you notice any of these signs, inspect and replace the gasket immediately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse the old gasket during water pump service?\u003c\/strong\u003e\u003cbr\u003e\nA: No, gaskets are designed for single use and compress to form a seal. Reusing an old gasket can result in leaks, poor sealing, and potential engine damage from overheating.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM gasket 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":51962603798841,"sku":"2198","price":16.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/12_ab8f112d-a4c5-4e23-8e3d-d7ad1fc8cfb4.jpg?v=1771804953","url":"https:\/\/jlmmarine.com\/ru\/products\/676-44315-00-water-pump-impeller-gasket-for-yamaha-omc-c40-235-240-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}