{"product_id":"377178-775519-water-pump-impeller-for-evinrude-johnson-omc-brp-9-5hp-10hp","title":"377178 775519 Water Pump Impeller for Evinrude Johnson OMC BRP 9.5HP 10HP | JLM Marine","description":"\u003ch2\u003eWater Pump Impeller – Fits Johnson Evinrude OMC BRP 9.5HP 10HP Outboard Motors\u003c\/h2\u003e\n\n\u003cp\u003eThis premium aftermarket water pump impeller is designed to fit \u003cstrong\u003eJohnson Evinrude OMC BRP 9.5HP and 10HP outboard motors\u003c\/strong\u003e. Engineered to meet OEM specifications, this impeller ensures reliable cooling performance and long service life for your engine.\u003c\/p\u003e\n\n\u003cp\u003eDirect replacement for OEM part numbers \u003cstrong\u003e377178\u003c\/strong\u003e and \u003cstrong\u003e775519\u003c\/strong\u003e, as well as Sierra \u003cstrong\u003e18-3003\u003c\/strong\u003e. Compatible with engines manufactured between 1958 and 1973.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete impeller kit with key\/pin included\u003c\/li\u003e\n\u003cli\u003eBrass hub design for enhanced durability\u003c\/li\u003e\n\u003cli\u003eHigh-quality neoprene rubber construction for superior heat and water resistance\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\u003eJohnson Evinrude OMC\u003c\/td\u003e\n\u003ctd\u003e377178\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson Evinrude OMC\u003c\/td\u003e\n\u003ctd\u003e775519\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3003\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 Johnson\/Evinrude owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/johnson-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eJohnson\/Evinrude Serial Number Guide\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\u003eRated HP\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\u003eJohnson Evinrude OMC BRP\u003c\/td\u003e\n\u003ctd\u003e9.5 HP\u003c\/td\u003e\n\u003ctd\u003e1964-1973\u003c\/td\u003e\n\u003ctd\u003e377178, 775519\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson Evinrude OMC BRP\u003c\/td\u003e\n\u003ctd\u003e10 HP\u003c\/td\u003e\n\u003ctd\u003e1958-1963\u003c\/td\u003e\n\u003ctd\u003e377178, 775519\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\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-Quality Metal Alloy (Brass Hub) and Neoprene Rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Impeller Overall Diameter\u003c\/td\u003e\n\u003ctd\u003e69.00 mm \/ 2.72 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Shaft Insert Diameter\u003c\/td\u003e\n\u003ctd\u003e14.10 mm \/ 0.56 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHub Type\u003c\/td\u003e\n\u003ctd\u003eBrass\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 × Outboard Rubber Impeller with Key\/Pin\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 and remove the spark plug wire to prevent accidental engine start.\u003c\/li\u003e\n\u003cli\u003eRemove the lower unit from the outboard motor following your engine's service manual.\u003c\/li\u003e\n\u003cli\u003eDisassemble the water pump housing and remove the old impeller carefully.\u003c\/li\u003e\n\u003cli\u003eClean the impeller housing thoroughly, removing any debris or old gasket material.\u003c\/li\u003e\n\u003cli\u003eLubricate the new impeller with waterproof grease or soapy water for easier installation.\u003c\/li\u003e\n\u003cli\u003eInsert the key\/pin into the driveshaft slot, ensuring it is properly seated.\u003c\/li\u003e\n\u003cli\u003eCarefully slide the new impeller onto the driveshaft, rotating the blades in the correct direction as needed.\u003c\/li\u003e\n\u003cli\u003eInstall the impeller plate and ensure all components are properly aligned.\u003c\/li\u003e\n\u003cli\u003eReplace the water pump housing gaskets with new ones to prevent leaks.\u003c\/li\u003e\n\u003cli\u003eReassemble the water pump housing and secure all bolts to the manufacturer's torque specifications.\u003c\/li\u003e\n\u003cli\u003eReattach the lower unit to the outboard motor and reconnect all hoses and fittings.\u003c\/li\u003e\n\u003cli\u003eTest the water pump by running the engine with the cooling system engaged; verify proper water flow.\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 impeller fits my Johnson or Evinrude outboard?\u003c\/strong\u003e\u003cbr\u003e\nA: Check the compatible engine models table above to verify your HP rating and year range. You can also cross-reference OEM part numbers 377178 or 775519 with your engine's service manual or parts diagram.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my water pump impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Most manufacturers recommend replacing the impeller every 2-3 years or every 200-300 hours of operation, whichever comes first. If you notice overheating, reduced water flow, or visible cracks\/wear on the impeller blades, replace it immediately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my impeller is failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include engine overheating, weak or no water discharge from the cooling outlet, steam from the engine, and reduced performance. Inspect the impeller annually even if no symptoms are present.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this impeller come with the installation key\/pin?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this kit includes the impeller with the key\/pin required for installation on your Johnson Evinrude outboard motor.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between this aftermarket impeller and the OEM version?\u003c\/strong\u003e\u003cbr\u003e\nA: This aftermarket impeller is manufactured to OEM specifications using comparable high-quality neoprene rubber and a brass hub. It offers the same fit and performance as the original part at a more competitive price point.\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":49581927891257,"sku":"17IO020K","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Water_Pump_Impeller_for_Johnson_Evinrude_95_10_HP___18-3003_-_JLM_MARINE-8288130.jpg?v=1755013287","url":"https:\/\/jlmmarine.com\/products\/377178-775519-water-pump-impeller-for-evinrude-johnson-omc-brp-9-5hp-10hp","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}