{"product_id":"volvo-impeller-kit","title":"Sierra 18-3276-1 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=\"157hzmb\" data-start=\"0\" data-end=\"34\"\u003eSierra 18-3276-1 Impeller Kit\u003c\/h2\u003e\n\u003cp data-start=\"37\" data-end=\"337\"\u003eKeep your marine cooling system operating reliably with the Sierra 18-3276-1 Impeller Kit. Designed as a high-quality replacement for select raw water pump applications, this impeller kit helps maintain proper water circulation and protects your engine from overheating during long days on the water.\u003c\/p\u003e\n\u003cp data-start=\"339\" data-end=\"710\"\u003eThe raw water impeller is one of the most important maintenance items in any marine engine. Over time, the flexible rubber vanes can wear, crack, or lose efficiency due to heat, debris, and continuous operation. Replacing the impeller at recommended service intervals helps restore cooling performance and reduce the risk of expensive engine damage caused by overheating.\u003c\/p\u003e\n\u003cp data-start=\"712\" data-end=\"1026\"\u003eBuilt using durable marine-grade materials, the Sierra 18-3276-1 impeller kit is engineered for dependable performance in both freshwater and saltwater environments. Designed to meet or exceed OEM specifications, it provides reliable fitment and straightforward installation for routine cooling system maintenance.\u003c\/p\u003e\n\u003chr data-start=\"1028\" data-end=\"1031\"\u003e\n\u003ch3 data-section-id=\"lmqikf\" data-start=\"1033\" data-end=\"1061\"\u003eCommon Engine Fitments\u003c\/h3\u003e\n\u003cp data-start=\"1062\" data-end=\"1190\"\u003eThe Sierra 18-3276-1 impeller kit is commonly used on marine engines equipped with compatible raw water pump systems, including:\u003c\/p\u003e\n\u003cul data-start=\"1192\" data-end=\"1405\"\u003e\n\u003cli data-section-id=\"9eyza6\" data-start=\"1192\" data-end=\"1214\"\u003eMerCruiser 4.3L V6\u003c\/li\u003e\n\u003cli data-section-id=\"jlix76\" data-start=\"1215\" data-end=\"1237\"\u003eMerCruiser 5.0L V8\u003c\/li\u003e\n\u003cli data-section-id=\"xlwk5x\" data-start=\"1238\" data-end=\"1260\"\u003eMerCruiser 5.7L V8\u003c\/li\u003e\n\u003cli data-section-id=\"ei4nmu\" data-start=\"1261\" data-end=\"1283\"\u003eMerCruiser 350 MAG\u003c\/li\u003e\n\u003cli data-section-id=\"1juraxn\" data-start=\"1284\" data-end=\"1323\"\u003eVolvo Penta 5.0Gi and 5.7Gi engines\u003c\/li\u003e\n\u003cli data-section-id=\"1dc4lw1\" data-start=\"1324\" data-end=\"1364\"\u003eOMC Cobra 5.0L and 5.7L applications\u003c\/li\u003e\n\u003cli data-section-id=\"16dqt7c\" data-start=\"1365\" data-end=\"1405\"\u003eCrusader 350 CID and 454 CID engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1407\" data-end=\"1445\"\u003eThese engines are frequently found in:\u003c\/p\u003e\n\u003cul data-start=\"1447\" data-end=\"1654\"\u003e\n\u003cli data-section-id=\"wmzc5h\" data-start=\"1447\" data-end=\"1483\"\u003eSea Ray sport boats and cruisers\u003c\/li\u003e\n\u003cli data-section-id=\"vh3rfz\" data-start=\"1484\" data-end=\"1524\"\u003eChaparral bowriders and cuddy cabins\u003c\/li\u003e\n\u003cli data-section-id=\"1mt7yc7\" data-start=\"1525\" data-end=\"1554\"\u003eFour Winns Horizon series\u003c\/li\u003e\n\u003cli data-section-id=\"pgmj84\" data-start=\"1555\" data-end=\"1576\"\u003eRegal sport boats\u003c\/li\u003e\n\u003cli data-section-id=\"1nv8ff\" data-start=\"1577\" data-end=\"1617\"\u003eMalibu Response and Sunsetter models\u003c\/li\u003e\n\u003cli data-section-id=\"1t5sgx4\" data-start=\"1618\" data-end=\"1654\"\u003eCorrect Craft Ski Nautique boats\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1656\" data-end=\"1812\"\u003eThe 18-3276-1 kit is commonly used in raw water cooling systems where consistent water flow is essential for maintaining safe engine operating temperatures.\u003c\/p\u003e\n\u003cp data-start=\"1814\" data-end=\"1981\"\u003eFitment can vary depending on raw water pump model and engine serial number, so confirming compatibility with part number \u003cstrong data-start=\"1936\" data-end=\"1949\"\u003e18-3276-1\u003c\/strong\u003e before ordering is recommended.\u003c\/p\u003e\n\u003chr data-start=\"1983\" data-end=\"1986\"\u003e\n\u003ch3 data-section-id=\"1iz91iu\" data-start=\"1988\" data-end=\"2004\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"2005\" data-end=\"2359\"\u003e\n\u003cli data-section-id=\"cjir2b\" data-start=\"2005\" data-end=\"2056\"\u003eHigh-quality marine raw water pump impeller kit\u003c\/li\u003e\n\u003cli data-section-id=\"1u0gvay\" data-start=\"2057\" data-end=\"2108\"\u003eHelps restore proper cooling system performance\u003c\/li\u003e\n\u003cli data-section-id=\"117gqwr\" data-start=\"2109\" data-end=\"2181\"\u003eDesigned for MerCruiser, Volvo Penta, OMC, and Crusader applications\u003c\/li\u003e\n\u003cli data-section-id=\"elyeyc\" data-start=\"2182\" data-end=\"2245\"\u003eMarine-grade materials for durability and long service life\u003c\/li\u003e\n\u003cli data-section-id=\"14hp0bk\" data-start=\"2246\" data-end=\"2303\"\u003eHelps prevent overheating and cooling system failures\u003c\/li\u003e\n\u003cli data-section-id=\"1g0fq3l\" data-start=\"2304\" data-end=\"2359\"\u003eDirect replacement for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2361\" data-end=\"2364\"\u003e\n\u003ch3 data-section-id=\"12htrbs\" data-start=\"2366\" data-end=\"2405\"\u003eWhy Replace Your Marine Impeller?\u003c\/h3\u003e\n\u003cp data-start=\"2406\" data-end=\"2641\"\u003eA worn impeller can reduce cooling efficiency long before complete failure occurs. Routine replacement helps maintain proper water flow, protects internal engine components, and reduces the chance of unexpected breakdowns on the water.\u003c\/p\u003e\n\u003cp data-start=\"2643\" data-end=\"2827\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eIf you’re servicing a compatible sterndrive or inboard marine engine, the Sierra 18-3276-1 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\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"contents\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Land 'N' Sea","offers":[{"title":"Default Title","offer_id":48754188419329,"sku":"47-32761","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0056\/9429\/2079\/files\/Screenshot2026-05-09145532.png?v=1778353145","url":"https:\/\/inboardpartshq.com\/products\/volvo-impeller-kit","provider":"Inboard Parts HQ","version":"1.0","type":"link"}