{"product_id":"water-pump-kit-for-yamaha-2-stroke-outboards-replaces-679-w0078-00-00-without-housing-sierra-18-3397","title":"Sierra Water Pump Kit 18-3397, Without Housing, Replaces Yamaha 679-W0078-00-00 and 679-W0078-A0-00","description":"\u003cp\u003eThe Sierra 18-3397 Water Pump Kit is a without-housing water pump rebuild kit for Yamaha outboard applications. It is designed to restore proper cooling system operation by replacing the wear components of the water pump assembly rather than the full housing, making it a cost-effective solution when the housing itself is still in good condition. The kit is a complete component set: it includes an impeller (Sierra 18-3088, O.E. 6F5-44352-00-00), an impeller key (Sierra 18-3300), and mounting bolts (Sierra 18-0256), giving installers everything needed to rebuild the pump's wear parts in one purchase.\u003c\/p\u003e\u003cp\u003eThis kit directly replaces Yamaha O.E. Water pump kits 679-W0078-00-00 and 679-W0078-A0-00, so it is a drop-in match for outboards originally fitted with either of those Yamaha part numbers. Because it omits the housing, it is intended for rebuilds where the existing housing is being reused; buyers who also need a new housing should confirm that separately before ordering.\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 18-3397\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Water Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing Included:\u003c\/strong\u003e No (without housing)\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\u003eWeight:\u003c\/strong\u003e 0.45 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999753632\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Impeller (18-3088, O.E. 6F5-44352-00-00), Impeller Key (18-3300), Bolts (18-0256)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eYamaha outboard engines originally equipped with water pump kit 679-W0078-00-00 or 679-W0078-A0-00, 2 stroke\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e679-W0078-00-00\u003c\/li\u003e\n\u003cli\u003e679-W0078-A0-00\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3397 water pump kit include?\u003c\/strong\u003e The kit includes an impeller (Sierra 18-3088, O.E. Number 6F5-44352-00-00), an impeller key (Sierra 18-3300), and mounting bolts (Sierra 18-0256). It does not include the water pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit come with a housing?\u003c\/strong\u003e No, the Sierra 18-3397 is a water pump kit without housing, meaning it supplies the impeller, key, and bolts for a rebuild but not the pump housing itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich Yamaha OEM part numbers does 18-3397 replace?\u003c\/strong\u003e This kit replaces Yamaha water pump kits 679-W0078-00-00 and 679-W0078-A0-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3397 weigh?\u003c\/strong\u003e The Sierra 18-3397 water pump kit weighs 0.45 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the impeller's OEM number in this kit?\u003c\/strong\u003e The impeller included in kit 18-3397 is Sierra 18-3088, which corresponds to O.E. Number 6F5-44352-00-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this kit for 2 stroke or 4 stroke Yamaha outboards?\u003c\/strong\u003e The 18-3397 kit is listed under the Yamaha Outboard Water Pumps and Impellers 2 Stroke category.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3397 water pump kit?\u003c\/strong\u003e The UPC for the Sierra 18-3397 water pump kit is 030999753632.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I reuse my old water pump housing with this kit?\u003c\/strong\u003e Yes, the 18-3397 kit is designed as a without-housing rebuild kit, so it is intended to be installed with the existing pump housing rather than a new one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre the impeller key and bolts included separately or already installed?\u003c\/strong\u003e The impeller key (18-3300) and bolts (18-0256) are supplied as individual components within the 18-3397 kit, ready to be installed during the rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3397 kit a genuine Sierra part?\u003c\/strong\u003e Yes, 18-3397 is the Sierra manufacturer part number for this water pump kit, sold as a direct replacement for the listed Yamaha OEM kits.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988147253467,"sku":"SIE-18-3397","price":34.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3397_lg__48933.1558125098.500.750.jpg?v=1785329192","url":"https:\/\/www.goodvibesmarina.com\/products\/water-pump-kit-for-yamaha-2-stroke-outboards-replaces-679-w0078-00-00-without-housing-sierra-18-3397","provider":"Good Vibes Marina","version":"1.0","type":"link"}