{"product_id":"impeller-vp-21213664-gm-2005","title":"Sierra 18-30778 Water Pump 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\u003ch2 data-section-id=\"1jcwpvd\" data-start=\"0\" data-end=\"44\"\u003eSierra 18-30778 Water Pump Impeller Kit\u003c\/h2\u003e\n\u003cp data-start=\"47\" data-end=\"325\"\u003eKeep your outboard cooling system performing reliably with the Sierra 18-30778 Impeller Kit. Designed as a high-quality replacement for select OEM water pump systems, this kit restores proper water circulation and helps protect your engine from overheating during demanding use.\u003c\/p\u003e\n\u003cp data-start=\"327\" data-end=\"690\"\u003eThe water pump impeller is one of the most important maintenance components on any outboard. Over time, the rubber vanes can wear down, crack, or lose flexibility from heat, sand, and debris. Replacing the impeller at regular service intervals helps maintain proper cooling performance, protects internal engine components, and reduces the risk of costly repairs.\u003c\/p\u003e\n\u003cp data-start=\"692\" data-end=\"984\"\u003eManufactured using durable marine-grade materials, the Sierra 18-30778 is built to withstand harsh boating environments while delivering dependable long-term performance. Designed as a direct replacement for compatible lower units, it offers reliable fitment and straightforward installation.\u003c\/p\u003e\n\u003chr data-start=\"986\" data-end=\"989\"\u003e\n\u003ch3 data-section-id=\"lmqikf\" data-start=\"991\" data-end=\"1019\"\u003eCommon Engine Fitments\u003c\/h3\u003e\n\u003cp data-start=\"1020\" data-end=\"1139\"\u003eThe Sierra 18-30778 impeller kit is commonly used on select Yamaha and Mercury outboard engine applications, including:\u003c\/p\u003e\n\u003cul data-start=\"1141\" data-end=\"1338\"\u003e\n\u003cli data-section-id=\"1sajt2v\" data-start=\"1141\" data-end=\"1178\"\u003eYamaha F150 four-stroke outboards\u003c\/li\u003e\n\u003cli data-section-id=\"161t5ts\" data-start=\"1179\" data-end=\"1194\"\u003eYamaha F175\u003c\/li\u003e\n\u003cli data-section-id=\"162gc9t\" data-start=\"1195\" data-end=\"1210\"\u003eYamaha F200\u003c\/li\u003e\n\u003cli data-section-id=\"162hwme\" data-start=\"1211\" data-end=\"1226\"\u003eYamaha F225\u003c\/li\u003e\n\u003cli data-section-id=\"1qzfj21\" data-start=\"1227\" data-end=\"1295\"\u003eMercury 150HP four-stroke outboards with compatible pump systems\u003c\/li\u003e\n\u003cli data-section-id=\"deux16\" data-start=\"1296\" data-end=\"1338\"\u003eMercury 175HP four-stroke applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1340\" data-end=\"1378\"\u003eThese engines are frequently found on:\u003c\/p\u003e\n\u003cul data-start=\"1380\" data-end=\"1473\"\u003e\n\u003cli data-section-id=\"1w09plz\" data-start=\"1380\" data-end=\"1399\"\u003eCenter consoles\u003c\/li\u003e\n\u003cli data-section-id=\"j1ko55\" data-start=\"1400\" data-end=\"1413\"\u003eBay boats\u003c\/li\u003e\n\u003cli data-section-id=\"ifxy4b\" data-start=\"1414\" data-end=\"1440\"\u003eOffshore fishing boats\u003c\/li\u003e\n\u003cli data-section-id=\"1w0sla8\" data-start=\"1441\" data-end=\"1455\"\u003eBass boats\u003c\/li\u003e\n\u003cli data-section-id=\"g3zcqw\" data-start=\"1456\" data-end=\"1473\"\u003ePontoon boats\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1475\" data-end=\"1540\"\u003ePopular boat brands commonly equipped with these engines include:\u003c\/p\u003e\n\u003cul data-start=\"1542\" data-end=\"1619\"\u003e\n\u003cli data-section-id=\"1jrja48\" data-start=\"1542\" data-end=\"1554\"\u003eSea Hunt\u003c\/li\u003e\n\u003cli data-section-id=\"d2luwj\" data-start=\"1555\" data-end=\"1568\"\u003eSportsman\u003c\/li\u003e\n\u003cli data-section-id=\"t2jkoa\" data-start=\"1569\" data-end=\"1581\"\u003eKey West\u003c\/li\u003e\n\u003cli data-section-id=\"8lg0kl\" data-start=\"1582\" data-end=\"1592\"\u003eRanger\u003c\/li\u003e\n\u003cli data-section-id=\"18mdfpv\" data-start=\"1593\" data-end=\"1604\"\u003eSkeeter\u003c\/li\u003e\n\u003cli data-section-id=\"14gpxa2\" data-start=\"1605\" data-end=\"1619\"\u003eBennington\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1621\" data-end=\"1774\"\u003eFitment can vary depending on lower unit design and model year, so confirming compatibility with part number \u003cstrong data-start=\"1730\" data-end=\"1742\"\u003e18-30778\u003c\/strong\u003e before ordering is recommended.\u003c\/p\u003e\n\u003chr data-start=\"1776\" data-end=\"1779\"\u003e\n\u003ch3 data-section-id=\"1iz91iu\" data-start=\"1781\" data-end=\"1797\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"1798\" data-end=\"2118\"\u003e\n\u003cli data-section-id=\"1hc4e7b\" data-start=\"1798\" data-end=\"1845\"\u003eHigh-quality marine water pump impeller kit\u003c\/li\u003e\n\u003cli data-section-id=\"25oj3f\" data-start=\"1846\" data-end=\"1892\"\u003eRestores proper cooling system performance\u003c\/li\u003e\n\u003cli data-section-id=\"1pvogln\" data-start=\"1893\" data-end=\"1948\"\u003eHelps prevent overheating and premature engine wear\u003c\/li\u003e\n\u003cli data-section-id=\"vzyvyg\" data-start=\"1949\" data-end=\"2016\"\u003eCompatible with select Yamaha and Mercury outboard applications\u003c\/li\u003e\n\u003cli data-section-id=\"56nsuv\" data-start=\"2017\" data-end=\"2073\"\u003eDurable marine-grade materials for long service life\u003c\/li\u003e\n\u003cli data-section-id=\"jjjjoy\" data-start=\"2074\" data-end=\"2118\"\u003eDirect replacement for easy installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2120\" data-end=\"2123\"\u003e\n\u003ch3 data-section-id=\"oraizx\" data-start=\"2125\" data-end=\"2167\"\u003eWhy Routine Impeller Service Matters\u003c\/h3\u003e\n\u003cp data-start=\"2168\" data-end=\"2399\"\u003eA worn impeller can reduce water flow long before complete failure occurs. Routine replacement helps maintain steady cooling performance, protects vital engine components, and reduces the risk of unexpected breakdowns on the water.\u003c\/p\u003e\n\u003cp data-start=\"2401\" data-end=\"2575\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eIf you’re servicing a compatible Yamaha or Mercury outboard, the Sierra 18-30778 impeller kit delivers dependable cooling performance and OEM-style reliability you can trust.\u003c\/p\u003e","brand":"Land 'N' Sea","offers":[{"title":"Default Title","offer_id":48748777144577,"sku":"47-30778","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0056\/9429\/2079\/files\/rra-18-30778_xl_1.jpg?v=1778171707","url":"https:\/\/inboardpartshq.com\/products\/impeller-vp-21213664-gm-2005","provider":"Inboard Parts HQ","version":"1.0","type":"link"}