{"product_id":"sierra-impeller-kit-sie-18-3077-ap-1933","title":"Sierra Impeller Kit 18-3077 (AP-1933) – Mercury \/ Mariner Outboard Water Pump Service Kit","description":"\u003cp data-start=\"220\" data-end=\"497\"\u003eThe \u003cstrong data-start=\"224\" data-end=\"265\"\u003eSierra 18-3077 Impeller Kit (AP-1933)\u003c\/strong\u003e is a complete raw water pump service kit designed for Mercury and Mariner outboards. This kit includes the impeller and essential sealing components needed to restore proper cooling water circulation and prevent engine overheating.\u003c\/p\u003e\n\u003cp data-start=\"499\" data-end=\"743\"\u003eThe impeller is the primary wear component in the water pump system, responsible for drawing water through the lower unit and delivering it to the engine. Over time, the rubber vanes can wear, harden, or break down, reducing cooling efficiency.\u003c\/p\u003e\n\u003cp data-start=\"745\" data-end=\"902\"\u003eManufactured to meet or exceed OEM specifications, this kit ensures dependable performance and long service life in both freshwater and saltwater conditions.\u003c\/p\u003e\n\u003chr data-start=\"904\" data-end=\"907\"\u003e\n\u003ch2 data-start=\"909\" data-end=\"928\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"912\" data-end=\"928\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"929\" data-end=\"1215\"\u003e\n\u003cli data-start=\"929\" data-end=\"973\"\u003eComplete water pump impeller service kit\u003c\/li\u003e\n\u003cli data-start=\"974\" data-end=\"1042\"\u003eIncludes impeller and sealing components (varies by application)\u003c\/li\u003e\n\u003cli data-start=\"1043\" data-end=\"1081\"\u003eRestores proper cooling water flow\u003c\/li\u003e\n\u003cli data-start=\"1082\" data-end=\"1128\"\u003eDirect OEM replacement fit and performance\u003c\/li\u003e\n\u003cli data-start=\"1129\" data-end=\"1178\"\u003eDurable flexible rubber impeller construction\u003c\/li\u003e\n\u003cli data-start=\"1179\" data-end=\"1215\"\u003eSierra limited lifetime warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1217\" data-end=\"1220\"\u003e\n\u003ch2 data-start=\"1222\" data-end=\"1249\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1225\" data-end=\"1249\"\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"1251\" data-end=\"1286\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1255\" data-end=\"1286\"\u003eMercury \/ Mariner Outboards\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1287\" data-end=\"1304\"\u003eCommonly used on:\u003c\/p\u003e\n\u003cul data-start=\"1305\" data-end=\"1344\"\u003e\n\u003cli data-start=\"1305\" data-end=\"1314\"\u003e40 HP\u003c\/li\u003e\n\u003cli data-start=\"1315\" data-end=\"1324\"\u003e45 HP\u003c\/li\u003e\n\u003cli data-start=\"1325\" data-end=\"1334\"\u003e50 HP\u003c\/li\u003e\n\u003cli data-start=\"1335\" data-end=\"1344\"\u003e60 HP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1346\" data-end=\"1452\"\u003e➡️ Fits select 2-stroke and early 4-stroke Mercury\/Mariner outboards using compatible water pump housings.\u003c\/p\u003e\n\u003chr data-start=\"1454\" data-end=\"1457\"\u003e\n\u003ch2 data-start=\"1459\" data-end=\"1496\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1462\" data-end=\"1494\"\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1497\" data-end=\"1516\"\u003eFitment depends on:\u003c\/p\u003e\n\u003cul data-start=\"1517\" data-end=\"1610\"\u003e\n\u003cli data-start=\"1517\" data-end=\"1542\"\u003eEngine model and year\u003c\/li\u003e\n\u003cli data-start=\"1543\" data-end=\"1573\"\u003eLower unit \/ gearcase type\u003c\/li\u003e\n\u003cli data-start=\"1574\" data-end=\"1610\"\u003eWater pump housing configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1612\" data-end=\"1636\"\u003e⚠️ Always confirm using:\u003c\/p\u003e\n\u003cul data-start=\"1637\" data-end=\"1711\"\u003e\n\u003cli data-start=\"1637\" data-end=\"1661\"\u003eEngine serial number\u003c\/li\u003e\n\u003cli data-start=\"1662\" data-end=\"1711\"\u003eOEM part number match (\u003cstrong data-start=\"1687\" data-end=\"1708\"\u003e18-3077 \/ AP-1933\u003c\/strong\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1713\" data-end=\"1716\"\u003e\n\u003ch2 data-start=\"1718\" data-end=\"1757\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1721\" data-end=\"1757\"\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1758\" data-end=\"1797\"\u003eReplace the impeller kit if you notice:\u003c\/p\u003e\n\u003cul data-start=\"1798\" data-end=\"1959\"\u003e\n\u003cli data-start=\"1798\" data-end=\"1828\"\u003eWeak or no telltale stream\u003c\/li\u003e\n\u003cli data-start=\"1829\" data-end=\"1851\"\u003eEngine overheating\u003c\/li\u003e\n\u003cli data-start=\"1852\" data-end=\"1883\"\u003eReduced cooling performance\u003c\/li\u003e\n\u003cli data-start=\"1884\" data-end=\"1932\"\u003eCracked, hardened, or missing impeller vanes\u003c\/li\u003e\n\u003cli data-start=\"1933\" data-end=\"1959\"\u003eAfter seasonal storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1961\" data-end=\"2022\"\u003eRecommended service interval: \u003cstrong data-start=\"1991\" data-end=\"2022\"\u003eevery 100 hours or annually\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"2024\" data-end=\"2027\"\u003e\n\u003ch2 data-start=\"2029\" data-end=\"2054\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2032\" data-end=\"2054\"\u003eInstallation Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2055\" data-end=\"2256\"\u003e\n\u003cli data-start=\"2055\" data-end=\"2107\"\u003eInstall impeller with correct rotation direction\u003c\/li\u003e\n\u003cli data-start=\"2108\" data-end=\"2141\"\u003eLubricate during installation\u003c\/li\u003e\n\u003cli data-start=\"2142\" data-end=\"2176\"\u003eInspect wear plate and housing\u003c\/li\u003e\n\u003cli data-start=\"2177\" data-end=\"2215\"\u003eReplace all included seals\/gaskets\u003c\/li\u003e\n\u003cli data-start=\"2216\" data-end=\"2256\"\u003eEnsure proper key alignment on shaft\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2258\" data-end=\"2261\"\u003e\n\u003ch2 data-start=\"2263\" data-end=\"2305\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2266\" data-end=\"2305\"\u003eAlternate \/ Superseded Part Numbers\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"2307\" data-end=\"2335\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2311\" data-end=\"2335\"\u003eOEM Cross References\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2336\" data-end=\"2387\"\u003e\n\u003cli data-start=\"2336\" data-end=\"2387\"\u003eMercury: \u003cstrong data-start=\"2347\" data-end=\"2360\"\u003e47-89983T\u003c\/strong\u003e, \u003cstrong data-start=\"2362\" data-end=\"2374\"\u003e47-89983\u003c\/strong\u003e, \u003cstrong data-start=\"2376\" data-end=\"2387\"\u003e89983T1\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2389\" data-end=\"2392\"\u003e\n\u003ch3 data-start=\"2394\" data-end=\"2430\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2398\" data-end=\"2430\"\u003eAftermarket Cross References\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2431\" data-end=\"2496\"\u003e\n\u003cli data-start=\"2431\" data-end=\"2454\"\u003eSierra: \u003cstrong data-start=\"2441\" data-end=\"2452\"\u003e18-3077\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2455\" data-end=\"2479\"\u003eMallory: \u003cstrong data-start=\"2466\" data-end=\"2477\"\u003e9-45601\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2480\" data-end=\"2496\"\u003eGLM: \u003cstrong data-start=\"2487\" data-end=\"2496\"\u003e12018\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2498\" data-end=\"2501\"\u003e\n\u003ch2 data-start=\"2503\" data-end=\"2520\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2506\" data-end=\"2518\"\u003eShipping\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2521\" data-end=\"2586\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e\n\u003chr data-start=\"2588\" data-end=\"2591\"\u003e\n\u003ch3 data-start=\"2593\" data-end=\"2620\"\u003e💡 Parts Desk Insight\u003c\/h3\u003e\n\u003cp data-start=\"2621\" data-end=\"2819\"\u003eIf your outboard is still peeing but not as strong as it used to, the impeller is usually the first place to look. They wear gradually and often fail under load before showing obvious signs at idle.\u003c\/p\u003e\n\u003cp data-start=\"2821\" data-end=\"2916\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eRegular replacement keeps your engine running cool and avoids unexpected issues on the water 👍\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564240896036,"sku":"SIE-18-3077","price":94.22,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/2a12d727-d4d6-4360-b44a-4f42dc3fda44.png?v=1774209442","url":"https:\/\/marisolmarine.com\/products\/sierra-impeller-kit-sie-18-3077-ap-1933","provider":"Marisol Marine Company","version":"1.0","type":"link"}