{"product_id":"689-44324-a0-water-pump-impeller-gasket-for-yamaha-mariner-20hp-25hp-30hp-jlm-marine","title":"689-44324-A0 Water Pump Impeller Gasket for Yamaha Mariner 20HP 25HP 30HP | JLM Marine","description":"\u003ch2\u003eWater Pump Impeller Gasket for Yamaha Mariner 20HP 25HP 30HP | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis water pump impeller gasket is engineered for \u003cstrong\u003eYamaha 2-stroke 25-30 HP\u003c\/strong\u003e and \u003cstrong\u003eMariner 20-30 HP outboard engines\u003c\/strong\u003e. It ensures a proper seal between the water pump components, preventing leaks and maintaining optimal cooling performance for your marine engine.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement For:\u003c\/strong\u003e Yamaha 689-44324-A0, 689-44324-A0-00\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eOEM-spec gasket for reliable water pump sealing\u003c\/li\u003e\n\u003cli\u003eFits multiple Yamaha and Mariner outboard models from 1984-1985 and later\u003c\/li\u003e\n\u003cli\u003eEssential component for water pump maintenance and rebuild\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\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e689-44324-A0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e689-44324-A0-00\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\" target=\"_blank\" rel=\"nofollow noopener\"\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\" target=\"_blank\" rel=\"nofollow noopener\"\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\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984-1985\u003c\/td\u003e\n\u003ctd\u003e689-44324-A0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e30 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984-1985\u003c\/td\u003e\n\u003ctd\u003e689-44324-A0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e20C (S\/N prefix 6A9)\u003c\/td\u003e\n\u003ctd\u003e20 HP\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eAll Year\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e25C (S\/N prefix 6A9)\u003c\/td\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eAll Year\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e30A (S\/N prefix 684)\u003c\/td\u003e\n\u003ctd\u003e30 HP\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eAll Year\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\"\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 Number\u003c\/td\u003e\n\u003ctd\u003e689-44324-A0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eYamaha \u0026amp; Mariner Outboard Engines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower Range\u003c\/td\u003e\n\u003ctd\u003e20-30 HP\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\n\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Impeller Gasket\u003c\/strong\u003e\u003c\/span\u003e (Replaces 689-44324-A0, 689-44324-A0-00)\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 remove the lower unit from the outboard motor following your engine's service manual.\u003c\/li\u003e\n\u003cli\u003eRemove the water pump housing and carefully extract the old impeller and gasket.\u003c\/li\u003e\n\u003cli\u003eClean all mating surfaces thoroughly, removing old gasket material and debris. Inspect for damage or corrosion.\u003c\/li\u003e\n\u003cli\u003ePlace the new impeller gasket onto the pump housing, ensuring proper alignment with all bolt holes.\u003c\/li\u003e\n\u003cli\u003eInstall the impeller, ensuring the blades are oriented correctly according to your service manual. Apply marine grease to the impeller for initial lubrication.\u003c\/li\u003e\n\u003cli\u003eInstall the pump housing and torque bolts to manufacturer specifications in a criss-cross pattern.\u003c\/li\u003e\n\u003cli\u003eReinstall the lower unit, ensuring proper alignment of the driveshaft and water tube.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery and perform a water pump function test before launching.\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 Yamaha or Mariner engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine's model number, horsepower, and year with the compatibility table above. For Yamaha 2-stroke 25-30 HP engines from 1984-1985 or Mariner 20C, 25C, and 30A models with the specified serial number prefixes, this gasket is the correct fit. Always verify the OEM part number 689-44324-A0 matches your current gasket.\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 replace the water pump impeller, typically every 2-3 years or 200-300 operating hours. Never reuse an old gasket, as it may not seal properly and can cause cooling system leaks.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my water pump gasket is failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include water leaking from the lower unit, engine overheating, weak or no water stream from the tell-tale indicator, or visible coolant around the pump housing. If you notice any of these signs, inspect and replace the gasket immediately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this gasket without removing the entire lower unit?\u003c\/strong\u003e\u003cbr\u003e\nA: No, proper water pump service requires complete lower unit removal to access the pump housing and gasket. Attempting shortcuts may result in improper installation and cooling system failure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM Yamaha 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":51960672780601,"sku":"2007","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/12_7938286e-3912-4d87-9782-3ebd3170e35d.jpg?v=1771677677","url":"https:\/\/jlmmarine.com\/products\/689-44324-a0-water-pump-impeller-gasket-for-yamaha-mariner-20hp-25hp-30hp-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}