{"product_id":"water-pump-kit-with-housing-for-yamaha-outboards-replaces-yamaha-6g5-w0078-a1-00-sierra-18-3311","title":"Sierra 18-3311 Water Pump Kit with Housing for Yamaha Outboards, Replaces 6G5-W0078-A1-00","description":"\u003cp\u003eThe Sierra 18-3311 Water Pump Kit with Housing is a complete water pump rebuild kit for Yamaha 2-stroke outboard engines, designed to restore proper cooling system operation when the original pump housing, gasket, or impeller has worn out or failed. Unlike a basic impeller-only repair, this kit includes the pump housing itself along with the gasket and mounting bolts needed to complete the job in one purchase, so you are not left sourcing individual components separately.\u003c\/p\u003e\u003cp\u003eInside the kit, the water pump gasket (part 18-0244, O.E. 6E5-44315-A0-00) seals the housing to the lower unit, four mounting bolts (part 18-0256, O.E. 97095-08045-00) secure the housing in place, and the impeller (part 18-3071) drives coolant through the system. Because the kit includes the housing, it is the correct choice when the housing is cracked, worn, or grooved from a failed impeller, rather than just replacing the wearable parts.\u003c\/p\u003e\u003cp\u003eThis kit directly replaces the Yamaha OEM water pump kit 6G5-W0078-A1-00 and is built to meet or exceed the performance of the original equipment part. It is intended for Yamaha outboard applications covered by the Yamaha 2-stroke water pump and impeller category, and every Sierra part is backed by Sierra's standard customer satisfaction warranty.\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 18-3311\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes Housing:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Water Pump Housing, Gasket (18-0244), Bolts x4 (18-0256), Impeller (18-3071)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 6G5-W0078-A1-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.55 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999755834\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eYamaha outboard engines (2-stroke water pump and impeller applications)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e6G5-W0078-A1-00\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3311 water pump kit include?\u003c\/strong\u003e The kit includes a water pump housing, the water pump gasket (part 18-0244, OEM 6E5-44315-A0-00), four mounting bolts (part 18-0256, OEM 97095-08045-00), and an impeller (part 18-3071).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3311 kit include the water pump housing?\u003c\/strong\u003e Yes, the Sierra 18-3311 is the version of this kit that includes the housing, which is what distinguishes it from a housing-less kit covering the same application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-3311 replace?\u003c\/strong\u003e It replaces Yamaha OEM water pump kit number 6G5-W0078-A1-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3311 a genuine Yamaha part or aftermarket?\u003c\/strong\u003e The 18-3311 is a Sierra aftermarket kit engineered to meet or exceed the performance of the original Yamaha equipment it replaces, not a genuine Yamaha part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3311 water pump kit weigh?\u003c\/strong\u003e The Sierra 18-3311 water pump kit weighs 1.55 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the 18-3311 water pump kit designed for?\u003c\/strong\u003e This kit is designed for Yamaha 2-stroke outboard engines that use the water pump housing and impeller assembly it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many mounting bolts come with the kit, and what size are they?\u003c\/strong\u003e Four mounting bolts are included with the 18-3311 kit, corresponding to OEM part number 97095-08045-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the water pump gasket and the impeller in this kit?\u003c\/strong\u003e The gasket (part 18-0244) seals the pump housing against the lower unit to prevent leaks, while the impeller (part 18-3071) is the rotating component that actually pumps cooling water through the engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the water pump housing instead of just the impeller?\u003c\/strong\u003e If the housing is worn, cracked, or grooved from a failed impeller, replacing just the impeller will not restore proper sealing, so a kit like the Sierra 18-3311 that includes the housing is needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a UPC available for the Sierra 18-3311 kit?\u003c\/strong\u003e Yes, the Sierra 18-3311 water pump kit carries UPC 030999755834.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988143157467,"sku":"SIE-18-3311","price":78.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-3311__17027.1722369573.500.750.jpg?v=1785188578","url":"https:\/\/www.goodvibesmarina.com\/products\/water-pump-kit-with-housing-for-yamaha-outboards-replaces-yamaha-6g5-w0078-a1-00-sierra-18-3311","provider":"Good Vibes Marina","version":"1.0","type":"link"}