{"product_id":"water-pump-kit-without-housing-for-yamaha-f6-f8-outboards-replaces-yamaha-68t-w0078-00-00-sierra-18-3450","title":"Sierra 18-3450 Water Pump Kit without Housing, Yamaha Outboard, Replaces 63D-44322-00-00 \/ 68T-W0078-00-00","description":"\u003cp\u003eThe Sierra 18-3450 Water Pump Kit without Housing is a complete impeller service kit built for Yamaha outboard engines. It is the same kit as Sierra's 18-3410 Water Pump Kit, but sold without the water pump housing, making it the right choice when your existing housing is still in good condition and only the wear components need replacing.\u003c\/p\u003e\u003cp\u003eThe kit supplies every part needed to rebuild the water pump's wear side: a Sierra 18-8910 impeller, an 18-3444 insert cup, an 18-3142 impeller plate, an 18-3176 water seal damper, an 18-3294 impeller key, four 18-0256 bolts, and an O-ring. The housing itself is constructed of aluminum. Because cooling pump failure can quickly lead to engine overheating, replacing worn impeller components on a regular service interval helps protect the powerhead.\u003c\/p\u003e\u003cp\u003eSierra 18-3450 is engineered to meet or exceed the original equipment part it replaces and is interchangeable with Yamaha 63D-44322-00-00 and 68T-W0078-00-00. Always confirm your existing part numbers before ordering to ensure a correct fit.\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 18-3450\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Kit without Housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.5 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282200046\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Yamaha outboard engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Impeller, Insert Cup, Impeller Plate, Water Seal Damper, Impeller Key, 4 Bolts, O-Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Yamaha 63D-44322-00-00, Yamaha 68T-W0078-00-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchangeable With:\u003c\/strong\u003e Mallory 9-48613\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eYamaha outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYamaha 63D-44322-00-00\u003c\/li\u003e\n\u003cli\u003eYamaha 68T-W0078-00-00\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-3450 Water Pump Kit?\u003c\/strong\u003e The kit includes one impeller, one insert cup, one impeller plate, one water seal damper, one impeller key, four bolts, and an O-ring, all sized to rebuild the wear side of a Yamaha outboard water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3450 kit come with a water pump housing?\u003c\/strong\u003e No, this kit does not include the housing. Sierra 18-3450 is the same contents as Sierra's 18-3410 kit but sold without the housing, for engines where the existing housing is still serviceable.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat Yamaha OEM part numbers does Sierra 18-3450 replace?\u003c\/strong\u003e Sierra 18-3450 replaces Yamaha 63D-44322-00-00 and Yamaha 68T-W0078-00-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-3450 interchangeable with any other aftermarket part numbers?\u003c\/strong\u003e Yes, Sierra 18-3450 is interchangeable with Mallory 9-48613.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-3450 kit fit?\u003c\/strong\u003e This kit is designed for use with Yamaha outboard engines; check your existing part numbers against 63D-44322-00-00 or 68T-W0078-00-00 to confirm a match before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-3450 impeller kit made from?\u003c\/strong\u003e The components in the Sierra 18-3450 kit are made of aluminum.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3450 Water Pump Kit weigh?\u003c\/strong\u003e The Sierra 18-3450 Water Pump Kit weighs 0.5 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-3450 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e Sierra 18-3450 is an aftermarket replacement kit engineered to meet or exceed the original Yamaha equipment it replaces, including 63D-44322-00-00 and 68T-W0078-00-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between Sierra 18-3450 and Sierra 18-3410?\u003c\/strong\u003e Sierra 18-3450 contains the same impeller, insert cup, impeller plate, water seal damper, impeller key, bolts, and O-ring as Sierra 18-3410, but 18-3450 is sold without the water pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3450 kit include the bolts needed for installation?\u003c\/strong\u003e Yes, four Sierra 18-0256 bolts are included in the 18-3450 Water Pump Kit along with the impeller, insert cup, impeller plate, water seal damper, impeller key, and O-ring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes Sierra 18-3450 come with a warranty?\u003c\/strong\u003e Sierra 18-3450 is covered under Sierra's limited warranty as a genuine Sierra product.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988149383387,"sku":"SIE-18-3450","price":40.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3450_lg__91516.1558124403.500.750.jpg?v=1785188299","url":"https:\/\/www.goodvibesmarina.com\/products\/water-pump-kit-without-housing-for-yamaha-f6-f8-outboards-replaces-yamaha-68t-w0078-00-00-sierra-18-3450","provider":"Good Vibes Marina","version":"1.0","type":"link"}