{"product_id":"part-for-4-stroke-outboards-jlm-marine","title":"Part for 4-Stroke Outboards | JLM Marine","description":"\u003ch2\u003eOutboard Rubber Impeller with Key \/ Pin – Fits 4-Stroke 8HP \u0026amp; 9.9HP (209cc)\u003c\/h2\u003e\n\n\u003cp\u003eThis aftermarket rubber impeller with key\/pin is engineered for \u003cstrong\u003e4-stroke outboard engines\u003c\/strong\u003e, specifically the \u003cstrong\u003e8HP\u003c\/strong\u003e and \u003cstrong\u003e9.9HP (209cc)\u003c\/strong\u003e models. Designed to deliver reliable cooling performance, this impeller ensures your engine operates at safe temperatures during every voyage.\u003c\/p\u003e\n\n\u003cp\u003eA direct replacement for OEM impellers, this kit provides a cost-effective solution without compromising on quality or fit. Manufactured to OEM specifications, it integrates seamlessly into your existing cooling system.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eComplete kit includes impeller, drive key\/pin for immediate installation\u003c\/li\u003e\n  \u003cli\u003ePrecision-molded rubber blades for efficient water flow\u003c\/li\u003e\n  \u003cli\u003eSuitable for 4-stroke outboard cooling systems\u003c\/li\u003e\n\u003c\/ul\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\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eModel\u003c\/th\u003e\n      \u003cth\u003eRated HP\u003c\/th\u003e\n      \u003cth\u003eStroke\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e4-Stroke Outboard\u003c\/td\u003e\n      \u003ctd\u003e8HP\u003c\/td\u003e\n      \u003ctd\u003e4-Stroke\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e4-Stroke Outboard (209cc)\u003c\/td\u003e\n      \u003ctd\u003e9.9HP\u003c\/td\u003e\n      \u003ctd\u003e4-Stroke\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\u003ePart Type\u003c\/td\u003e\n      \u003ctd\u003eWater Pump Impeller\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMaterial\u003c\/td\u003e\n      \u003ctd\u003eNeoprene Rubber\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 Range\u003c\/td\u003e\n      \u003ctd\u003e8HP, 9.9HP\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\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Drive 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\u003e\n\u003cstrong\u003eDisconnect the fuel line\u003c\/strong\u003e and ensure the engine is off and cool before beginning work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemove the lower unit\u003c\/strong\u003e from the outboard by unbolting the mounting hardware. Support the unit carefully as you lower it.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccess the water pump housing\u003c\/strong\u003e by removing the pump cover plate or housing bolts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtract the old impeller\u003c\/strong\u003e from the pump housing, noting the orientation of the blades. Remove the old drive key\/pin from the driveshaft.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean the pump housing\u003c\/strong\u003e thoroughly, removing any debris, old gasket material, or corrosion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLubricate the new impeller blades\u003c\/strong\u003e with glycerin, soapy water, or marine grease to ease installation and prevent tearing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall the new drive key\/pin\u003c\/strong\u003e onto the driveshaft, ensuring it seats properly in the groove.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert the new impeller\u003c\/strong\u003e into the housing, aligning the blades in the correct rotational direction (typically all blades swept in one direction).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReassemble the pump housing\u003c\/strong\u003e and replace any gaskets or O-rings as needed. Torque bolts to manufacturer specifications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReattach the lower unit\u003c\/strong\u003e to the outboard, ensuring all mounting bolts are secure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReconnect the fuel line\u003c\/strong\u003e and run the engine in a test tank or on muffs to verify proper water flow from the telltale (indicator stream).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInspect for leaks\u003c\/strong\u003e around the pump housing and lower unit seals. Correct any issues before operating the engine under load.\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 4-stroke outboard?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine's horsepower and displacement with our compatibility table. This impeller is designed for 4-stroke 8HP and 9.9HP (209cc) models. If your model matches, verify the physical dimensions against your original impeller before purchasing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my water pump impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: We recommend inspecting your impeller annually and replacing it every 2–3 years or 200–300 hours of operation, whichever comes first. Replace immediately if you notice cracked, brittle, or missing blades, or if your engine runs hot.\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 weak or absent water flow from the telltale (indicator stream), engine overheating, steam from the engine, or reduced cooling efficiency. If you experience any of these, inspect and replace the impeller promptly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to replace the drive key\/pin every time I change the impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, it's best practice to install a new drive key\/pin with each impeller replacement. Worn or damaged keys can cause the impeller to slip on the driveshaft, reducing cooling performance and potentially damaging the pump.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this impeller myself, or do I need a mechanic?\u003c\/strong\u003e\u003cbr\u003e\nA: If you have basic mechanical skills and the proper tools, you can install this impeller yourself by following our installation guide. However, if you're unfamiliar with lower unit disassembly or water pump service, we recommend professional installation to ensure safe and correct fitment.\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":51940934418745,"sku":"17IT006K","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/s-l1600_8c885dda-c3df-462a-a8d1-ba2e7f612f9c.webp?v=1771121396","url":"https:\/\/jlmmarine.com\/products\/part-for-4-stroke-outboards-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}