{"product_id":"sierra-impeller-sie-18-3056-ap-1814","title":"Sierra Impeller 18-3056 (AP-1814) – Mercury \/ Mariner Outboard Water Pump Replacement","description":"\u003cp data-start=\"216\" data-end=\"492\"\u003eThe \u003cstrong data-start=\"220\" data-end=\"257\"\u003eSierra 18-3056 Impeller (AP-1814)\u003c\/strong\u003e is a direct replacement raw water pump impeller designed for Mercury and Mariner outboards. This impeller is responsible for circulating cooling water through the engine, ensuring proper temperature control and preventing overheating.\u003c\/p\u003e\n\u003cp data-start=\"494\" data-end=\"687\"\u003eBuilt to meet or exceed OEM specifications, this impeller features durable, flexible rubber vanes and a precision-fit hub for reliable performance in both freshwater and saltwater environments.\u003c\/p\u003e\n\u003cp data-start=\"689\" data-end=\"826\"\u003eRoutine replacement of the impeller is essential to maintain optimal cooling efficiency and protect your engine from heat-related damage.\u003c\/p\u003e\n\u003chr data-start=\"828\" data-end=\"831\"\u003e\n\u003ch2 data-start=\"833\" data-end=\"852\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"836\" data-end=\"852\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"853\" data-end=\"1126\"\u003e\n\u003cli data-start=\"853\" data-end=\"899\"\u003eDirect replacement raw water pump impeller\u003c\/li\u003e\n\u003cli data-start=\"900\" data-end=\"950\"\u003eFlexible rubber vanes for efficient water flow\u003c\/li\u003e\n\u003cli data-start=\"951\" data-end=\"996\"\u003ePrecision-fit hub for secure installation\u003c\/li\u003e\n\u003cli data-start=\"997\" data-end=\"1044\"\u003eMaintains proper engine cooling performance\u003c\/li\u003e\n\u003cli data-start=\"1045\" data-end=\"1089\"\u003eMarine-grade construction for durability\u003c\/li\u003e\n\u003cli data-start=\"1090\" data-end=\"1126\"\u003eSierra limited lifetime warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1128\" data-end=\"1131\"\u003e\n\u003ch2 data-start=\"1133\" data-end=\"1160\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1136\" data-end=\"1160\"\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"1162\" data-end=\"1197\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1166\" data-end=\"1197\"\u003eMercury \/ Mariner Outboards\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1198\" data-end=\"1215\"\u003eCommonly used on:\u003c\/p\u003e\n\u003cul data-start=\"1216\" data-end=\"1245\"\u003e\n\u003cli data-start=\"1216\" data-end=\"1225\"\u003e25 HP\u003c\/li\u003e\n\u003cli data-start=\"1226\" data-end=\"1235\"\u003e30 HP\u003c\/li\u003e\n\u003cli data-start=\"1236\" data-end=\"1245\"\u003e35 HP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1247\" data-end=\"1336\"\u003e➡️ Fits select Mercury\/Mariner 2-stroke outboards using compatible water pump assemblies.\u003c\/p\u003e\n\u003chr data-start=\"1338\" data-end=\"1341\"\u003e\n\u003ch2 data-start=\"1343\" data-end=\"1380\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1346\" data-end=\"1378\"\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1381\" data-end=\"1400\"\u003eFitment depends on:\u003c\/p\u003e\n\u003cul data-start=\"1401\" data-end=\"1499\"\u003e\n\u003cli data-start=\"1401\" data-end=\"1426\"\u003eEngine model and year\u003c\/li\u003e\n\u003cli data-start=\"1427\" data-end=\"1456\"\u003eWater pump housing design\u003c\/li\u003e\n\u003cli data-start=\"1457\" data-end=\"1499\"\u003eShaft configuration (keyed vs splined)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1501\" data-end=\"1525\"\u003e⚠️ Always confirm using:\u003c\/p\u003e\n\u003cul data-start=\"1526\" data-end=\"1600\"\u003e\n\u003cli data-start=\"1526\" data-end=\"1550\"\u003eEngine serial number\u003c\/li\u003e\n\u003cli data-start=\"1551\" data-end=\"1600\"\u003eOEM part number match (\u003cstrong data-start=\"1576\" data-end=\"1597\"\u003e18-3056 \/ AP-1814\u003c\/strong\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1602\" data-end=\"1605\"\u003e\n\u003ch2 data-start=\"1607\" data-end=\"1646\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1610\" data-end=\"1646\"\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1647\" data-end=\"1682\"\u003eReplace the impeller if you notice:\u003c\/p\u003e\n\u003cul data-start=\"1683\" data-end=\"1835\"\u003e\n\u003cli data-start=\"1683\" data-end=\"1713\"\u003eWeak or no telltale stream\u003c\/li\u003e\n\u003cli data-start=\"1714\" data-end=\"1736\"\u003eEngine overheating\u003c\/li\u003e\n\u003cli data-start=\"1737\" data-end=\"1768\"\u003eReduced cooling performance\u003c\/li\u003e\n\u003cli data-start=\"1769\" data-end=\"1808\"\u003eCracked, hardened, or missing vanes\u003c\/li\u003e\n\u003cli data-start=\"1809\" data-end=\"1835\"\u003eAfter seasonal storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1837\" data-end=\"1898\"\u003eRecommended service interval: \u003cstrong data-start=\"1867\" data-end=\"1898\"\u003eevery 100 hours or annually\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"1900\" data-end=\"1903\"\u003e\n\u003ch2 data-start=\"1905\" data-end=\"1930\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1908\" data-end=\"1930\"\u003eInstallation Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1931\" data-end=\"2141\"\u003e\n\u003cli data-start=\"1931\" data-end=\"1973\"\u003eLubricate impeller before installation\u003c\/li\u003e\n\u003cli data-start=\"1974\" data-end=\"2021\"\u003eInstall vanes in correct rotation direction\u003c\/li\u003e\n\u003cli data-start=\"2022\" data-end=\"2056\"\u003eInspect housing and wear plate\u003c\/li\u003e\n\u003cli data-start=\"2057\" data-end=\"2104\"\u003eEnsure proper hub alignment (key or spline)\u003c\/li\u003e\n\u003cli data-start=\"2105\" data-end=\"2141\"\u003eReplace seals or gaskets if worn\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2143\" data-end=\"2146\"\u003e\n\u003ch2 data-start=\"2148\" data-end=\"2190\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2151\" data-end=\"2190\"\u003eAlternate \/ Superseded Part Numbers\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"2192\" data-end=\"2220\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2196\" data-end=\"2220\"\u003eOEM Cross References\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2221\" data-end=\"2269\"\u003e\n\u003cli data-start=\"2221\" data-end=\"2269\"\u003eMercury: \u003cstrong data-start=\"2232\" data-end=\"2244\"\u003e47-89982\u003c\/strong\u003e, \u003cstrong data-start=\"2246\" data-end=\"2256\"\u003e89982T\u003c\/strong\u003e, \u003cstrong data-start=\"2258\" data-end=\"2269\"\u003e89982T1\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2271\" data-end=\"2274\"\u003e\n\u003ch3 data-start=\"2276\" data-end=\"2312\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2280\" data-end=\"2312\"\u003eAftermarket Cross References\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2313\" data-end=\"2378\"\u003e\n\u003cli data-start=\"2313\" data-end=\"2336\"\u003eSierra: \u003cstrong data-start=\"2323\" data-end=\"2334\"\u003e18-3056\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2337\" data-end=\"2361\"\u003eMallory: \u003cstrong data-start=\"2348\" data-end=\"2359\"\u003e9-45604\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2362\" data-end=\"2378\"\u003eGLM: \u003cstrong data-start=\"2369\" data-end=\"2378\"\u003e12016\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2380\" data-end=\"2383\"\u003e\n\u003ch2 data-start=\"2385\" data-end=\"2402\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2388\" data-end=\"2400\"\u003eShipping\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2403\" data-end=\"2468\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e\n\u003chr data-start=\"2470\" data-end=\"2473\"\u003e\n\u003ch3 data-start=\"2475\" data-end=\"2502\"\u003e💡 Parts Desk Insight\u003c\/h3\u003e\n\u003cp data-start=\"2503\" data-end=\"2646\"\u003eA worn impeller can still move water at idle but fail when you increase throttle. If your engine runs hotter at speed, this is often the cause.\u003c\/p\u003e\n\u003cp data-start=\"2648\" data-end=\"2756\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eReplacing it regularly is a simple way to keep your outboard running cool and avoid unexpected breakdowns 👍\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564240732196,"sku":"SIE-18-3056","price":42.75,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/e9f42a25-ebff-4829-a7bb-94d59bc09fdf_db83e599-b550-4f2a-8037-c91e7f32d8fe.png?v=1774216154","url":"https:\/\/marisolmarine.com\/products\/sierra-impeller-sie-18-3056-ap-1814","provider":"Marisol Marine Company","version":"1.0","type":"link"}