{"product_id":"sierra-18-3370-water-pump-kit","title":"Sierra 18-3370 Yamaha Water Pump Repair Kit Without Housing","description":"\u003ch2\u003eSierra 18-3370 Yamaha Water Pump Repair Kit Without Housing\u003c\/h2\u003e\u003cp\u003eService the cooling system on your compatible Yamaha outboard with the Sierra 18-3370 water pump kit. This aftermarket kit brings the matched pump components together for scheduled maintenance or repair. This kit does not include a pump housing; inspect your existing housing before reusing it.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSierra manufacturer part number 18-3370\u003c\/li\u003e\n\u003cli\u003eExcludes the outer water pump housing\u003c\/li\u003e\n\u003cli\u003eIncludes a replacement impeller and matching pump service components\u003c\/li\u003e\n\u003cli\u003eDesigned for the Yamaha applications and OEM references listed below\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eFor select Yamaha outboard cooling systems. Compatibility depends on the exact engine model, model year and original pump assembly.\u003c\/p\u003e\u003ch3\u003eFitment \/ Product Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: Sierra\u003c\/li\u003e\n\u003cli\u003eProduct: Water pump service kit\u003c\/li\u003e\n\u003cli\u003eEngine style: Outboard\u003c\/li\u003e\n\u003cli\u003eCondition: New\u003c\/li\u003e\n\u003cli\u003eHousing included: No\u003c\/li\u003e\n\u003cli\u003eYamaha references: 692-W0078-00-00, 692-W0078-01-00, 692-W0078-A0-00\u003c\/li\u003e\n\u003c\/ul\u003e\u003cul\u003e\n\u003cli\u003e60 HP (2004-2005)\u003c\/li\u003e\n\u003cli\u003e70 HP (2004-2009)\u003c\/li\u003e\n\u003cli\u003eC75 (1994-1999)\u003c\/li\u003e\n\u003cli\u003eC85 (1991-1996) and CV85 (1989-1990)\u003c\/li\u003e\n\u003cli\u003e90 HP (1984-2009) and C90 (1997-2001)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eModel-year listings are application examples, not a guarantee for every engine of the same horsepower. Match the complete model code and OEM part number to your engine's parts diagram before ordering.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 × 18-3070 impeller\u003c\/li\u003e\n\u003cli\u003e1 × 18-3301 impeller key\u003c\/li\u003e\n\u003cli\u003e1 × 18-0239 water pump gasket\u003c\/li\u003e\n\u003cli\u003e1 × 18-0240 water pump gasket\u003c\/li\u003e\n\u003cli\u003e1 × 18-7436 O-ring\u003c\/li\u003e\n\u003cli\u003e1 × insert cup\u003c\/li\u003e\n\u003cli\u003e1 × wear plate\u003c\/li\u003e\n\u003cli\u003e1 × additional water pump gasket\u003c\/li\u003e\n\u003cli\u003e4 × bolts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOne Sierra 18-3370 water pump kit. Pump housing is sold separately.\u003c\/p\u003e\u003ch3\u003eService Notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFollow the Yamaha service manual for lower-unit removal, impeller orientation, lubricants and fastener torque.\u003c\/li\u003e\n\u003cli\u003eInspect the pump housing, sealing surfaces and water passages during service. Replace any damaged parts.\u003c\/li\u003e\n\u003cli\u003eUse the specified cooling-water supply when testing after installation; do not run the water pump dry.\u003c\/li\u003e\n\u003cli\u003eIf overheating continues, diagnose the rest of the cooling system.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy You Should Buy\u003c\/h3\u003e\u003cp\u003eA matched service kit helps simplify parts selection for a compatible pump rebuild. Replacing worn pump components supports proper cooling-water circulation and dependable engine maintenance.\u003c\/p\u003e\u003ch3\u003eCommon Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eScheduled water pump and impeller maintenance\u003c\/li\u003e\n\u003cli\u003eReplacement of worn pump components on verified Yamaha applications\u003c\/li\u003e\n\u003cli\u003ePump service when the existing housing remains serviceable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include the housing?\u003c\/strong\u003e\u003cbr\u003eNo. This is the without-housing kit; the existing housing must be inspected and reused or purchased separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it fit any Yamaha 60-90 HP outboard?\u003c\/strong\u003e\u003cbr\u003eNo. Check the complete engine model, year and OEM pump references above. Horsepower alone does not confirm fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a Yamaha-branded OEM kit?\u003c\/strong\u003e\u003cbr\u003eNo. This is a Sierra aftermarket replacement kit for the specified Yamaha applications.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48838074794216,"sku":"47-3370","price":49.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9927\/6776\/files\/sierra-18-3370.png?v=1790803010","url":"https:\/\/wakeboss.com\/products\/sierra-18-3370-water-pump-kit","provider":"Wakeboss","version":"1.0","type":"link"}