{"product_id":"water-pump-kit-with-housing-for-yamaha-50-70-hp-2-stroke-outboards-replaces-6h3-w0078-01-sierra-18-3466","title":"Sierra 18-3466 Water Pump Kit with Housing, Replaces Yamaha 6H3-W0078-01","description":"\u003cp\u003eThe Sierra 18-3466 Water Pump Kit with Housing is a complete replacement water pump assembly for Yamaha outboard engines, built to restore proper cooling system flow and pressure. Each kit includes the housing along with the impeller and companion components needed to complete the job in one part number, so there is no need to source individual pieces separately. Sierra formulates the impeller compound for each kit based on the size and application it is designed for, and every other component in the kit is built to meet or exceed the original manufacturer specifications. This kit is assembled in Sierra's Illinois factory and is intended for outboard applications, giving boat owners a direct, factory-spec replacement option for a worn or failing water pump. Cooling system water pumps are a routine maintenance item on outboard motors, and replacing the housing along with the impeller at the same time helps ensure a proper seal and consistent water flow through the powerhead. The 18-3466 kit corresponds to the Yamaha 6H3-W0078-01 water pump housing assembly, making it a straightforward match for boat owners who have identified that OEM number on their engine or in their parts manual. Keeping this kit on hand or installing it proactively helps prevent overheating issues caused by a degraded impeller or a worn housing surface.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3466\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Water Pump Kit with Housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Water Pump Kit with Housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.71 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 14.0 H x 9.5 L x 12.1 W (centimetres)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Service Type:\u003c\/strong\u003e Boat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Yamaha Outboard Water Pumps and Impellers 2 Stroke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282287061\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eYamaha outboard engines using the 6H3-W0078-01 water pump housing assembly\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e6H3-W0078-01\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3466 water pump kit include?\u003c\/strong\u003e The kit includes the water pump housing along with the impeller and the other components needed to complete a full water pump replacement on the applicable Yamaha outboard, all under part number 18-3466.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3466 kit a direct replacement for the Yamaha 6H3-W0078-01 pump housing?\u003c\/strong\u003e Yes, the Sierra 18-3466 water pump kit corresponds to the Yamaha 6H3-W0078-01 water pump housing assembly, so it can be ordered using either that OEM number or the Sierra part number 18-3466.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3466 water pump kit weigh?\u003c\/strong\u003e The Sierra 18-3466 Water Pump Kit with Housing weighs 0.71 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the packaged dimensions of this water pump kit?\u003c\/strong\u003e As packaged, the Sierra 18-3466 kit measures 14.0 cm high by 9.5 cm long by 12.1 cm wide.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-3466 water pump kit manufactured?\u003c\/strong\u003e This kit's country of origin is Taiwan, though final assembly of Sierra water pump kits is done at Sierra's Illinois factory.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the impeller in this kit meet original equipment specifications?\u003c\/strong\u003e The impeller compound in the 18-3466 kit is formulated based on the pump's size and application, and the kit's other components are built to meet or exceed original manufacturer specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this water pump kit meant for outboard, inboard, or sterndrive engines?\u003c\/strong\u003e The Sierra 18-3466 kit is intended for outboard engine applications, specifically Yamaha outboards using the 6H3-W0078-01 pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many units come in one order of part number 18-3466?\u003c\/strong\u003e One order of the Sierra 18-3466 water pump kit includes a single complete kit (unit count of 1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3466 kit include the pump housing or just the impeller?\u003c\/strong\u003e It includes both; the 18-3466 is sold as a water pump kit with housing, not an impeller-only kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3466 water pump kit?\u003c\/strong\u003e The UPC for the Sierra 18-3466 Water Pump Kit with Housing is 808282287061.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988149448923,"sku":"SIE-18-3466","price":47.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-3466__90146.1722518409.500.750.jpg?v=1785188603","url":"https:\/\/www.goodvibesmarina.com\/products\/water-pump-kit-with-housing-for-yamaha-50-70-hp-2-stroke-outboards-replaces-6h3-w0078-01-sierra-18-3466","provider":"Good Vibes Marina","version":"1.0","type":"link"}