{"product_id":"sierra-18-3040-water-pump-impeller-for-yamaha-outboards-replaces-63v-44352-01-00-6-fin-neoprene","title":"Sierra 18-3040 Impeller, Replaces Yamaha 63V-44352-01-00, Neoprene Water Pump Impeller for Yamaha Outboard Motors","description":"\u003cp\u003eThe Sierra 18-3040 is a neoprene water pump impeller built for Yamaha outboard motors. It is the rotating component inside the outboard's water pump housing that draws in raw water and circulates it through the cooling system, so a worn or cracked impeller is a common cause of overheating. This impeller has 6 fins molded from neoprene rubber, a material chosen for its resistance to heat, wear, and the abrasive conditions found inside a marine water pump housing. Each package includes one impeller, ready to install as a standalone replacement or as part of a full water pump service.\u003c\/p\u003e\u003cp\u003eThe 18-3040 is designed to work with Sierra's own water pump service kits for Yamaha outboards, including the 18-3433 Water Pump Kit without Housing, the 18-3412 Water Pump Kit with Housing, the 18-3475 Water Pump Repair Kit without Housing, and the 18-3479 Water Pump Repair Kit with Housing, giving installers flexibility depending on whether the housing also needs replacement. It directly replaces the Yamaha outboard OEM impeller 63V-44352-01-00, making it a straightforward drop-in swap during routine water pump maintenance or when addressing reduced cooling flow.\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 18-3040\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Fins:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e 1 impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Water Pump Kits:\u003c\/strong\u003e Sierra 18-3433, 18-3412, 18-3475, 18-3479\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282167431\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Yamaha 63V-44352-01-00\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Yamaha outboard engines.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e63V-44352-01-00\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3040 impeller fit?\u003c\/strong\u003e The Sierra 18-3040 is designed for Yamaha outboard engines, replacing the water pump impeller as part of routine cooling system maintenance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3040 the same as Yamaha part 63V-44352-01-00?\u003c\/strong\u003e Yes, the 18-3040 replaces Yamaha outboard OEM impeller 63V-44352-01-00 and is built to meet or exceed the performance of the original part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3040 impeller weigh?\u003c\/strong\u003e This impeller weighs 0.05 pounds, consistent with a compact single water pump impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-3040 impeller made from?\u003c\/strong\u003e Neoprene rubber is used for the 18-3040, chosen for its resistance to heat and wear inside a marine water pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fins does the Sierra 18-3040 impeller have?\u003c\/strong\u003e The 18-3040 has 6 fins, which drive water circulation through the outboard's cooling system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-3040 impeller?\u003c\/strong\u003e It is white, the standard color for this neoprene impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-3040?\u003c\/strong\u003e Each order includes one Sierra 18-3040 impeller; the water pump housing and other service parts are sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-3040 with a Sierra water pump kit?\u003c\/strong\u003e Yes, the 18-3040 is compatible with Sierra's 18-3433 and 18-3412 Water Pump Kits and the 18-3475 and 18-3479 Water Pump Repair Kits for Yamaha outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3040 a genuine Yamaha part or aftermarket?\u003c\/strong\u003e The 18-3040 is a Sierra-manufactured aftermarket impeller that replaces Yamaha OEM part 63V-44352-01-00, built to meet or exceed the original equipment specification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the 18-3040 impeller be replaced?\u003c\/strong\u003e A worn, cracked, or missing-fin impeller reduces cooling water flow and can cause an outboard to overheat, which is when replacing the 18-3040 is recommended.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-3040 require a full water pump housing to install?\u003c\/strong\u003e No, the 18-3040 is the impeller only; it can be installed alone or alongside a housing when used with Sierra's full water pump kits.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136997083,"sku":"SIE-18-3040","price":18.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3040_lg__25861.1558126275.500.750.jpg?v=1785188056","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3040-water-pump-impeller-for-yamaha-outboards-replaces-63v-44352-01-00-6-fin-neoprene","provider":"Good Vibes Marina","version":"1.0","type":"link"}