{"product_id":"water-pump-impeller-fits-yamaha-2-5hp-3hp-outboards-replaces-6l5-44352-00-00","title":"Water Pump Impeller – Fits Yamaha 2.5HP \u0026 3HP Outboards (Replaces 6L5-44352-00-00)","description":"\u003ch2\u003eWater Pump Impeller – Fits Yamaha 2.5HP \u0026amp; 3HP Outboards (Replaces 6L5-44352-00-00)\u003c\/h2\u003e\n\u003cp\u003eThis water pump impeller is designed for select Yamaha outboards, including the \u003cstrong\u003e2.5HP 4-Stroke (F2.5A\/B)\u003c\/strong\u003e from 2003–2021 and the \u003cstrong\u003e3HP 2-Stroke (3A\/Malta)\u003c\/strong\u003e from 1988–2002. It serves as a direct replacement part, ensuring reliable performance for your engine's cooling system.\u003c\/p\u003e\n\u003cp\u003eEngineered to meet OEM specifications, this impeller is a direct substitute for multiple part numbers, including Sierra 18-8911, Mallory 9-45615, and CEF 500322.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003eEngineered for direct OEM replacement installation.\u003c\/li\u003e\n    \u003cli\u003eFeatures a durable 6-blade rubber design for efficient water circulation.\u003c\/li\u003e\n    \u003cli\u003ePackage includes one water pump impeller.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n    \u003ctable\u003e\n        \u003cthead\u003e\n            \u003ctr\u003e\n                \u003cth\u003eBrand\u003c\/th\u003e\n                \u003cth\u003ePart Number\u003c\/th\u003e\n            \u003c\/tr\u003e\n        \u003c\/thead\u003e\n        \u003ctbody\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eYamaha\u003c\/td\u003e\n                \u003ctd\u003e6L5-44352-00-00\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eSierra\u003c\/td\u003e\n                \u003ctd\u003e18-8911\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eMallory\u003c\/td\u003e\n                \u003ctd\u003e9-45615\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eCEF\u003c\/td\u003e\n                \u003ctd\u003e500322\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eKUNOANZ\u003c\/td\u003e\n                \u003ctd\u003eKU-001009\u003c\/td\u003e\n            \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n    \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below. For 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\u003cdiv style=\"overflow-x:auto;\"\u003e\n    \u003ctable\u003e\n        \u003cthead\u003e\n            \u003ctr\u003e\n                \u003cth\u003eBrand\u003c\/th\u003e\n                \u003cth\u003eModel\u003c\/th\u003e\n                \u003cth\u003eRated HP\u003c\/th\u003e\n                \u003cth\u003eStroke\u003c\/th\u003e\n                \u003cth\u003eYears\u003c\/th\u003e\n                \u003cth\u003eOEM Part No.\u003c\/th\u003e\n                \u003cth\u003eNotes\u003c\/th\u003e\n            \u003c\/tr\u003e\n        \u003c\/thead\u003e\n        \u003ctbody\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eYamaha\u003c\/td\u003e\n                \u003ctd\u003eF2.5A\/B\u003c\/td\u003e\n                \u003ctd\u003e2.5\u003c\/td\u003e\n                \u003ctd\u003e4-Stroke\u003c\/td\u003e\n                \u003ctd\u003e2003-2021\u003c\/td\u003e\n                \u003ctd\u003e6L5-44352-00-00\u003c\/td\u003e\n                \u003ctd\u003eCurrent production\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eYamaha\u003c\/td\u003e\n                \u003ctd\u003e3A\u003c\/td\u003e\n                \u003ctd\u003e3\u003c\/td\u003e\n                \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                \u003ctd\u003e1988-2002\u003c\/td\u003e\n                \u003ctd\u003e6L5-44352-00-00\u003c\/td\u003e\n                \u003ctd\u003eMalta series\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd\u003eYamaha\u003c\/td\u003e\n                \u003ctd\u003eMalta\u003c\/td\u003e\n                \u003ctd\u003e3\u003c\/td\u003e\n                \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                \u003ctd\u003e1988-2002\u003c\/td\u003e\n                \u003ctd\u003e6L5-44352-00-00\u003c\/td\u003e\n                \u003ctd\u003eSame as 3A model\u003c\/td\u003e\n            \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n    \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n    \u003cthead\u003e\n        \u003ctr\u003e\n            \u003cth\u003eSpecification\u003c\/th\u003e\n            \u003cth\u003eValue\u003c\/th\u003e\n        \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003eWater Pump Impeller\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003eDirect OEM replacement\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eNumber of Blades\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003e6\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003eRubber\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003eØ 35.31-36mm × H 14.32-15mm, Shaft Ø 9.9-10mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003e8g (0.28 oz)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\u003cstrong\u003eOther Technical Attributes\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd\u003eFor water cooling system\u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e1 x Water Pump Impeller (\u003cspan style=\"color:red;\"\u003e6L5-44352-00-00\u003c\/span\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n    \u003cli\u003eDisconnect the negative battery cable and shift the outboard into the neutral position.\u003c\/li\u003e\n    \u003cli\u003eRemove the mounting bolts that secure the lower unit (gearcase) to the upper engine casing.\u003c\/li\u003e\n    \u003cli\u003eCarefully lower and separate the lower unit from the driveshaft housing.\u003c\/li\u003e\n    \u003cli\u003eLocate the water pump housing on top of the gearcase and remove its bolts.\u003c\/li\u003e\n    \u003cli\u003eLift the water pump housing and slide the old impeller off the driveshaft. Note the direction of the old blades.\u003c\/li\u003e\n    \u003cli\u003eClean the interior of the pump housing and inspect the wear plate for scoring or damage.\u003c\/li\u003e\n    \u003cli\u003eLightly lubricate the new impeller with grease and slide it onto the driveshaft.\u003c\/li\u003e\n    \u003cli\u003eTurn the driveshaft clockwise while pressing down on the impeller to seat the blades in the correct direction.\u003c\/li\u003e\n    \u003cli\u003eReinstall the water pump housing and torque the bolts to the manufacturer's specified value.\u003c\/li\u003e\n    \u003cli\u003eReattach the lower unit, ensuring the driveshaft and shift shaft are properly aligned.\u003c\/li\u003e\n    \u003cli\u003eOnce assembled, test the engine in the water to confirm a steady stream from the cooling system's tell-tale port.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this impeller fits my Yamaha outboard?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Check your engine's model and year against the \"Compatible Engine Models\" table. This impeller is a direct replacement for Yamaha OEM part \u003cstrong\u003e6L5-44352-00-00\u003c\/strong\u003e and fits F2.5A\/B (2003-2021) and 3A\/Malta (1988-2002) models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs of a failing water pump impeller?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Common symptoms include the engine overheating, an alarm sounding, or a weak or non-existent water stream from the \"tell-tale\" outlet. Upon inspection, a worn impeller may have cracked, brittle, or missing blades.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the impeller?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: For preventative maintenance, it is recommended to replace the water pump impeller every 1-2 years or every 100-200 hours of operation, especially if you frequently operate in saltwater or sandy\/silty conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: OEM vs. Aftermarket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n    \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51313373446457,"sku":"DE-17IY016K","price":10.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/DE-17IY016K_cf8f7e09-8a72-484f-be4d-971197f5db87.png?v=1762189006","url":"https:\/\/jlmmarine.com\/es\/products\/water-pump-impeller-fits-yamaha-2-5hp-3hp-outboards-replaces-6l5-44352-00-00","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}