{"product_id":"sierra-18-3086-water-pump-impeller-for-omc-sterndrive-cobra-replaces-omc-379475-777130-short-impeller","title":"Sierra 18-3086 Water Pump Impeller, Replaces OMC 379475, 777130","description":"\u003cp\u003eThe Sierra 18-3086 is a replacement water pump impeller built for the raw water cooling system of OMC Sterndrive\/Cobra I\/O units. The impeller is the flexible-vane component inside the sterndrive's water pump housing that draws in raw water and circulates it through the engine's cooling passages; a worn, cracked, or brittle impeller reduces water flow and can lead to engine overheating, so replacing it on a regular service interval or at the first sign of reduced water pressure is standard maintenance for OMC Sterndrive\/Cobra owners. This impeller is constructed of aluminum and stainless steel components and is finished in the natural brown rubber commonly used for marine impeller vanes. It is sold as a single impeller unit, packaged one per order, and is a direct cross-reference replacement for OMC part numbers 379475 and 777130, allowing it to be installed in place of the original OMC impeller without modification to the pump housing. Sierra manufactures a range of marine engine parts and this impeller carries a limited warranty. Always confirm the impeller and pump housing match your specific OMC Sterndrive\/Cobra water pump before installation.\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 18-3086\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Brown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.14 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999315380\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eI\/O - OMC Sterndrive\/Cobra cooling system\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC 379475\u003c\/li\u003e\n\u003cli\u003eOMC 777130\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3086 impeller replace?\u003c\/strong\u003e The Sierra 18-3086 is a direct replacement for OMC part numbers 379475 and 777130.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-3086 used for?\u003c\/strong\u003e It is a water pump impeller used in the raw water cooling system of OMC Sterndrive\/Cobra I\/O units, circulating water through the engine to keep it cool.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in the package?\u003c\/strong\u003e The Sierra 18-3086 ships as a single impeller, packaged one per order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-3086 impeller made of?\u003c\/strong\u003e It is made of aluminum and stainless steel components with the brown rubber vane material typical of marine water pump impellers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3086 impeller weigh?\u003c\/strong\u003e The Sierra 18-3086 impeller weighs 0.14 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3086 an OEM part or aftermarket?\u003c\/strong\u003e Sierra 18-3086 is an aftermarket impeller manufactured by Sierra as a cross-reference equivalent to OMC 379475 and 777130, not an OMC-branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the impeller on my OMC Sterndrive\/Cobra water pump?\u003c\/strong\u003e Replace the impeller in the OMC Sterndrive\/Cobra cooling system when it shows cracking, brittleness, or worn vanes, or if engine cooling water flow decreases, since a degraded impeller like the 18-3086 model reduces raw water circulation and can cause overheating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-3086 come with a warranty?\u003c\/strong\u003e Yes, the Sierra 18-3086 impeller is covered by Sierra's limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3086 impeller?\u003c\/strong\u003e The UPC for the Sierra 18-3086 impeller is 030999315380.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the Sierra 18-3086 fit any water pump housing?\u003c\/strong\u003e The 18-3086 is designed specifically for OMC Sterndrive\/Cobra I\/O cooling system water pumps and should be matched to that pump housing before installation.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988139749595,"sku":"SIE-18-3086","price":32.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3086_lg__34600.1558126104.500.750.jpg?v=1785188090","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3086-water-pump-impeller-for-omc-sterndrive-cobra-replaces-omc-379475-777130-short-impeller","provider":"Good Vibes Marina","version":"1.0","type":"link"}