{"product_id":"sierra-18-30778-water-pump-impeller-for-volvo-penta-aq-series-and-gas-gm-engines-2005-and-up-replaces-oem-21213664","title":"Sierra Impeller 18-30778 for Volvo Penta Water Pumps","description":"\u003cp\u003eThe Sierra Impeller 18-30778 is a replacement water pump impeller engineered for Volvo Penta water pump applications. It is produced in an OEM-approved ISO9001 factory, with the compound for each Sierra impeller formulated based on size and application to deliver consistent, reliable performance in your engine's raw water cooling circuit. As the pumping element inside the water pump housing, the impeller's flexible vanes flex and release with each rotation to draw in and circulate cooling water, protecting the engine from overheating.\u003c\/p\u003e\u003cp\u003eThis impeller is built from a metal-reinforced construction and is offered in a distinctive green and purple color combination, making it easy to identify during service. It is sold as a single unit, ready to install as a direct replacement during routine water pump maintenance or when addressing reduced water flow, overheating, or a worn-out impeller. Sierra impellers are engineered to cover a wide range of outboard, inboard, and sterndrive engine applications, and the 18-30778 is designated for use in Volvo Penta water pumps.\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 18-30778\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Volvo Penta Water Pumps \u0026amp; Impellers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Green Purple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.43 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 3 x 3 x 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Pieces:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282339753\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Volvo Penta water pump applications.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engine application is the Sierra 18-30778 impeller designed for?\u003c\/strong\u003e The Sierra 18-30778 impeller is designed for Volvo Penta water pump applications, serving as the pumping element that circulates raw cooling water through the engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-30778 impeller made of?\u003c\/strong\u003e It is made of a metal-reinforced construction, formulated by Sierra based on the size and application of the specific impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-30778 impeller weigh?\u003c\/strong\u003e The Sierra 18-30778 impeller weighs 0.43 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-30778 impeller?\u003c\/strong\u003e The item measures 3 x 3 x 4 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in one package?\u003c\/strong\u003e One Sierra 18-30778 impeller is included per package, sold as a single unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-30778 impeller?\u003c\/strong\u003e This impeller has a green and purple color combination, which helps distinguish it during installation and service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-30778 an OEM part or aftermarket?\u003c\/strong\u003e The 18-30778 is a Sierra-branded replacement impeller produced in an OEM-approved ISO9001 factory, rather than a part carrying the original engine manufacturer's branding.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the water pump impeller on my Volvo Penta engine?\u003c\/strong\u003e An impeller like the Sierra 18-30778 should be replaced when it shows signs of wear, cracked or missing vanes, or when the engine's raw water cooling flow has decreased, as part of routine water pump maintenance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-30778 impeller?\u003c\/strong\u003e The UPC for the Sierra 18-30778 impeller is 808282339753.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-30778 impeller fit outboard engines?\u003c\/strong\u003e No, the 18-30778 impeller is designated for Volvo Penta water pump applications rather than general outboard water pumps.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988139094235,"sku":"SIE-18-30778","price":52.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-30778__65500.1558184818.500.750.jpg?v=1785188205","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-30778-water-pump-impeller-for-volvo-penta-aq-series-and-gas-gm-engines-2005-and-up-replaces-oem-21213664","provider":"Good Vibes Marina","version":"1.0","type":"link"}