{"product_id":"water-pump-repair-kit-for-yamaha-f70a-70hp-outboard-2010-2017-without-housing-replaces-oem-6cj-w0078-00-00-sierra-18-3494","title":"Sierra Water Pump Repair Kit without Housing 18-3494, Replaces 6CJ-W0078-00-00, Fits Yamaha F70A (2010-17)","description":"\u003cp\u003eThe Sierra 18-3494 Water Pump Repair Kit is a without-housing rebuild kit for Yamaha F70A outboards, designed to restore cooling system performance without requiring a full water pump housing replacement. The kit supplies the key wear and sealing components needed for a water pump service: an O-ring, a water pump housing cover, and a cup insert, giving the installer the parts most commonly worn or damaged during normal water pump servicing.\u003c\/p\u003e\u003cp\u003eThis kit cross-references directly to Yamaha OEM part number 6CJ-W0078-00-00 and is built to fit the Yamaha F70A (2010-17). Because it omits the housing itself, it is intended for rebuilds where the existing housing is still serviceable, letting the boat owner or technician replace only the components that typically fail first. Each included part is manufactured to match OEM fit and function, making this a straightforward drop-in service kit for routine water pump maintenance.\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 18-3494\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Repair Kit (without Housing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.7 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282376932\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e O-Ring (93210-59MG7, Qty 1); Cover, Water Pump Housing (18-9083, O.E. 63D-44312-00, Qty 1); Cup, Insert (18-3449)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 6CJ-W0078-00-00\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eYamaha F70A (2010-17)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e6CJ-W0078-00-00\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3494 water pump kit fit?\u003c\/strong\u003e This kit fits the Yamaha F70A (2010-17) outboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3494 kit equivalent to an OEM part number?\u003c\/strong\u003e Yes, Sierra 18-3494 cross-references directly to Yamaha OEM part number 6CJ-W0078-00-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include the water pump housing?\u003c\/strong\u003e No, part number 18-3494 is a water pump repair kit without housing, so the housing itself is not included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat parts are included in the box?\u003c\/strong\u003e The 18-3494 kit includes an O-ring (93210-59MG7), a water pump housing cover (18-9083, O.E. 63D-44312-00), and a cup insert (18-3449).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3494 water pump kit weigh?\u003c\/strong\u003e The Sierra 18-3494 water pump repair kit weighs 0.7 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material are the components made from?\u003c\/strong\u003e The components in the Sierra 18-3494 kit are made from stainless steel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy a kit without housing instead of a full water pump kit?\u003c\/strong\u003e A without-housing kit like the 18-3494 is meant for rebuilds where the existing housing is still in good condition, so only the wear components (O-ring, cover, and cup insert) need to be replaced.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the housing cover included in the 18-3494 kit reusable OEM equipment?\u003c\/strong\u003e The kit includes a new water pump housing cover, part 18-9083, which cross-references to Yamaha O.E. Number 63D-44312-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit work on any Yamaha outboard?\u003c\/strong\u003e The Sierra 18-3494 kit is specified to fit the Yamaha F70A (2010-17); it is not listed as fitting other Yamaha outboard models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the cup insert (18-3449) used for in this kit?\u003c\/strong\u003e The cup insert, part 18-3449, is one of the components supplied in the Sierra 18-3494 water pump repair kit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988149579995,"sku":"SIE-18-3494","price":71.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-3494__64117.1722490045.500.750.jpg?v=1785188066","url":"https:\/\/www.goodvibesmarina.com\/products\/water-pump-repair-kit-for-yamaha-f70a-70hp-outboard-2010-2017-without-housing-replaces-oem-6cj-w0078-00-00-sierra-18-3494","provider":"Good Vibes Marina","version":"1.0","type":"link"}