{"product_id":"sierra-18-3079-impeller-kit-copy","title":"Sierra 18-3056 Impeller Kit","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0056\/9429\/2079\/files\/sierra-marine-engine-and-drive-parts-vector-logo.png?v=1777654573\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-69ea37f2-9634-83ea-95ed-3658eca80b3e-13\" data-is-intersecting=\"true\"\u003e\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-69ea37f2-9634-83ea-95ed-3658eca80b3e-13\" data-turn-id-container=\"request-69ea37f2-9634-83ea-95ed-3658eca80b3e-13\" data-testid=\"conversation-turn-212\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"6ceb8af1-cd7d-47d1-99d2-cfa4fdf08d45\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003ch2 data-section-id=\"1olktm7\" data-start=\"0\" data-end=\"32\"\u003eSierra 18-3056 Impeller Kit\u003c\/h2\u003e\n\u003cp data-start=\"35\" data-end=\"350\"\u003eKeep your engine cooling system operating at peak performance with the Sierra 18-3056 Impeller Kit. Designed as a high-quality replacement for select marine raw water pumps, this impeller kit helps maintain proper water circulation and protects your engine from overheating during demanding conditions on the water.\u003c\/p\u003e\n\u003cp data-start=\"352\" data-end=\"722\"\u003eThe raw water impeller is one of the most important maintenance components in any marine engine. Over time, the rubber vanes can wear, harden, or crack from heat, debris, and continuous operation. Replacing the impeller at regular service intervals helps restore cooling efficiency, improve reliability, and reduce the risk of costly engine damage caused by overheating.\u003c\/p\u003e\n\u003cp data-start=\"724\" data-end=\"1036\"\u003eManufactured using durable marine-grade materials, the Sierra 18-3056 impeller kit is engineered to meet or exceed OEM specifications for fit, performance, and long service life. Designed for both freshwater and saltwater environments, it delivers dependable operation across a wide range of marine applications.\u003c\/p\u003e\n\u003chr data-start=\"1038\" data-end=\"1041\"\u003e\n\u003ch3 data-section-id=\"lmqikf\" data-start=\"1043\" data-end=\"1071\"\u003eCommon Engine Fitments\u003c\/h3\u003e\n\u003cp data-start=\"1072\" data-end=\"1198\"\u003eThe Sierra 18-3056 impeller kit is commonly used on marine engines equipped with compatible raw water pump systems, including:\u003c\/p\u003e\n\u003cul data-start=\"1200\" data-end=\"1413\"\u003e\n\u003cli data-section-id=\"9eyza6\" data-start=\"1200\" data-end=\"1222\"\u003eMerCruiser 4.3L V6\u003c\/li\u003e\n\u003cli data-section-id=\"jlix76\" data-start=\"1223\" data-end=\"1245\"\u003eMerCruiser 5.0L V8\u003c\/li\u003e\n\u003cli data-section-id=\"xlwk5x\" data-start=\"1246\" data-end=\"1268\"\u003eMerCruiser 5.7L V8\u003c\/li\u003e\n\u003cli data-section-id=\"ei4nmu\" data-start=\"1269\" data-end=\"1291\"\u003eMerCruiser 350 MAG\u003c\/li\u003e\n\u003cli data-section-id=\"1juraxn\" data-start=\"1292\" data-end=\"1331\"\u003eVolvo Penta 5.0Gi and 5.7Gi engines\u003c\/li\u003e\n\u003cli data-section-id=\"1dc4lw1\" data-start=\"1332\" data-end=\"1372\"\u003eOMC Cobra 5.0L and 5.7L applications\u003c\/li\u003e\n\u003cli data-section-id=\"16dqt7c\" data-start=\"1373\" data-end=\"1413\"\u003eCrusader 350 CID and 454 CID engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1415\" data-end=\"1453\"\u003eThese engines are frequently found in:\u003c\/p\u003e\n\u003cul data-start=\"1455\" data-end=\"1662\"\u003e\n\u003cli data-section-id=\"wmzc5h\" data-start=\"1455\" data-end=\"1491\"\u003eSea Ray sport boats and cruisers\u003c\/li\u003e\n\u003cli data-section-id=\"vh3rfz\" data-start=\"1492\" data-end=\"1532\"\u003eChaparral bowriders and cuddy cabins\u003c\/li\u003e\n\u003cli data-section-id=\"o2iy28\" data-start=\"1533\" data-end=\"1562\"\u003eFour Winns Horizon models\u003c\/li\u003e\n\u003cli data-section-id=\"pgmj84\" data-start=\"1563\" data-end=\"1584\"\u003eRegal sport boats\u003c\/li\u003e\n\u003cli data-section-id=\"1nv8ff\" data-start=\"1585\" data-end=\"1625\"\u003eMalibu Response and Sunsetter models\u003c\/li\u003e\n\u003cli data-section-id=\"1t5sgx4\" data-start=\"1626\" data-end=\"1662\"\u003eCorrect Craft Ski Nautique boats\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1664\" data-end=\"1837\"\u003eThe 18-3056 kit is commonly used in raw water cooling systems where steady water flow is essential for maintaining safe engine temperatures and long-term engine reliability.\u003c\/p\u003e\n\u003cp data-start=\"1839\" data-end=\"2004\"\u003eFitment can vary depending on raw water pump model and engine serial number, so confirming compatibility with part number \u003cstrong data-start=\"1961\" data-end=\"1972\"\u003e18-3056\u003c\/strong\u003e before ordering is recommended.\u003c\/p\u003e\n\u003chr data-start=\"2006\" data-end=\"2009\"\u003e\n\u003ch3 data-section-id=\"1iz91iu\" data-start=\"2011\" data-end=\"2027\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"2028\" data-end=\"2392\"\u003e\n\u003cli data-section-id=\"cjir2b\" data-start=\"2028\" data-end=\"2079\"\u003eHigh-quality marine raw water pump impeller kit\u003c\/li\u003e\n\u003cli data-section-id=\"1u0gvay\" data-start=\"2080\" data-end=\"2131\"\u003eHelps restore proper cooling system performance\u003c\/li\u003e\n\u003cli data-section-id=\"117gqwr\" data-start=\"2132\" data-end=\"2204\"\u003eDesigned for MerCruiser, Volvo Penta, OMC, and Crusader applications\u003c\/li\u003e\n\u003cli data-section-id=\"elyeyc\" data-start=\"2205\" data-end=\"2268\"\u003eMarine-grade materials for durability and long service life\u003c\/li\u003e\n\u003cli data-section-id=\"iy6p66\" data-start=\"2269\" data-end=\"2336\"\u003eHelps reduce the risk of overheating and cooling system failure\u003c\/li\u003e\n\u003cli data-section-id=\"1g0fq3l\" data-start=\"2337\" data-end=\"2392\"\u003eDirect replacement for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2394\" data-end=\"2397\"\u003e\n\u003ch3 data-section-id=\"12htrbs\" data-start=\"2399\" data-end=\"2438\"\u003eWhy Replace Your Marine Impeller?\u003c\/h3\u003e\n\u003cp data-start=\"2439\" data-end=\"2679\"\u003eA worn impeller can lose efficiency long before complete failure occurs. Routine replacement helps maintain proper cooling water flow, protect internal engine components, and reduce the chance of unexpected breakdowns during boating season.\u003c\/p\u003e\n\u003cp data-start=\"2681\" data-end=\"2863\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eIf you’re servicing a compatible inboard or sterndrive marine engine, the Sierra 18-3056 impeller kit delivers dependable cooling performance and OEM-style reliability you can trust.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Land 'N' Sea","offers":[{"title":"Default Title","offer_id":48754200772865,"sku":"47-3056","price":25.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0056\/9429\/2079\/files\/rra-18-3056.jpg?v=1778353992","url":"https:\/\/inboardpartshq.com\/products\/sierra-18-3079-impeller-kit-copy","provider":"Inboard Parts HQ","version":"1.0","type":"link"}