{"product_id":"water-pump-impeller-kit-for-yamaha-6h4-w0078-00-40hp-50hp-sierra18-3429-outboard","title":"Water Pump Impeller Kit For Yamaha 6H4-W0078-00 40HP 50HP Sierra18-3429 Outboard","description":"\u003ch2\u003eWater Pump Impeller Kit for Yamaha\u003c\/h2\u003e\u003cp\u003eThis water pump impeller kit is a replacement cooling system part for Yamaha 40HP and 50HP outboard engines, referencing OEM part number 6H4-W0078-00 and cross-referencing for Sierra 18-3429, and it supplies the impeller components needed to keep cooling water circulating through the outboard.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis water pump impeller kit for Yamaha 40HP and 50HP outboards is a new outboard cooling water pump service kit. It replaces OEM part number 6H4-W0078-00 and matches for Sierra 18-3429. The kit is intended for marine mechanics and boat owners performing routine outboard water pump maintenance.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReplaces OEM part number 6H4-W0078-00\u003c\/li\u003e\n\u003cli\u003eCross-references for Sierra 18-3429\u003c\/li\u003e\n\u003cli\u003eDesigned for Yamaha 40HP and 50HP outboard engines\u003c\/li\u003e\n\u003cli\u003eKit includes the water pump impeller for the cooling system\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha 40HP outboard engines\u003c\/li\u003e\n\u003cli\u003efor Yamaha 50HP outboard engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReplacing a worn water pump impeller for Yamaha 40HP outboards\u003c\/li\u003e\n\u003cli\u003eReplacing a worn water pump impeller for Yamaha 50HP outboards\u003c\/li\u003e\n\u003cli\u003ePerforming scheduled water pump service on outboard motors\u003c\/li\u003e\n\u003cli\u003eRestoring pee-tube cooling water flow and engine cooling performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6H4-W0078-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCross Reference\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Sierra 18-3429\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Yamaha 40HP and 50HP outboard engines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWater pump impeller kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How often should a water pump impeller be replaced? \u003cstrong\u003eA:\u003c\/strong\u003e Impellers should typically be replaced when the outboard shows reduced cooling water flow or during scheduled water pump maintenance. This kit provides the impeller components for that service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Why is the impeller important for an outboard? \u003cstrong\u003eA:\u003c\/strong\u003e The impeller draws water into the cooling system to prevent the engine from overheating. Replacing it regularly helps maintain reliable outboard operation.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":45556623900758,"sku":"ZZ3E01544","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_ba93fe4f-490b-45d1-bf94-afff40c16920.jpg?v=1789219599","url":"https:\/\/www.solidspare.com\/products\/water-pump-impeller-kit-for-yamaha-6h4-w0078-00-40hp-50hp-sierra18-3429-outboard","provider":"Solid Spare","version":"1.0","type":"link"}