{"product_id":"sierra-marine-water-pump-sie-18-3599-2","title":"Sierra Marine Circulating Water Pump 18-3599-2 – MerCruiser \/ Volvo Penta GM V8 Engine Cooling Pump","description":"\u003cp data-end=\"560\" data-start=\"230\"\u003eThe \u003cstrong data-end=\"277\" data-start=\"234\"\u003eSierra 18-3599-2 Circulating Water Pump\u003c\/strong\u003e is a complete, engine-mounted cooling pump designed for GM-based V8 marine engines used in MerCruiser and Volvo Penta applications. This pump circulates coolant (or raw water in open systems) through the engine block to maintain proper operating temperature and prevent overheating.\u003c\/p\u003e\n\u003cp data-end=\"772\" data-start=\"562\"\u003eThis is a \u003cstrong data-end=\"604\" data-start=\"572\"\u003ebelt-driven circulating pump\u003c\/strong\u003e, not a raw water impeller pump. It is a critical component in the engine’s cooling system and is responsible for maintaining consistent coolant flow at all RPM ranges.\u003c\/p\u003e\n\u003cp data-end=\"943\" data-start=\"774\"\u003eManufactured from new castings and built to meet or exceed OEM specifications, this pump ensures long-lasting durability and reliable performance in marine environments.\u003c\/p\u003e\n\u003chr data-end=\"948\" data-start=\"945\"\u003e\n\u003ch2 data-end=\"969\" data-start=\"950\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"969\" data-start=\"953\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-end=\"1286\" data-start=\"970\"\u003e\n\u003cli data-end=\"1014\" data-start=\"970\"\u003eComplete circulating water pump assembly\u003c\/li\u003e\n\u003cli data-end=\"1053\" data-start=\"1015\"\u003eBelt-driven, engine-mounted design\u003c\/li\u003e\n\u003cli data-end=\"1097\" data-start=\"1054\"\u003eProvides continuous coolant circulation\u003c\/li\u003e\n\u003cli data-end=\"1153\" data-start=\"1098\"\u003eMarine-grade construction with corrosion resistance\u003c\/li\u003e\n\u003cli data-end=\"1200\" data-start=\"1154\"\u003eDirect OEM replacement fit and performance\u003c\/li\u003e\n\u003cli data-end=\"1249\" data-start=\"1201\"\u003eBuilt from new castings (not remanufactured)\u003c\/li\u003e\n\u003cli data-end=\"1286\" data-start=\"1250\"\u003eSierra limited lifetime warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"1291\" data-start=\"1288\"\u003e\n\u003ch2 data-end=\"1320\" data-start=\"1293\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"1320\" data-start=\"1296\"\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-end=\"1362\" data-start=\"1322\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"1362\" data-start=\"1326\"\u003eMerCruiser (GM-Based V8 Engines)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-end=\"1419\" data-start=\"1363\"\u003e\n\u003cli data-end=\"1381\" data-start=\"1363\"\u003e5.0L (305 CID)\u003c\/li\u003e\n\u003cli data-end=\"1400\" data-start=\"1382\"\u003e5.7L (350 CID)\u003c\/li\u003e\n\u003cli data-end=\"1419\" data-start=\"1401\"\u003e6.2L (377 CID)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1440\" data-start=\"1421\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"1440\" data-start=\"1425\"\u003eVolvo Penta\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-end=\"1464\" data-start=\"1441\"\u003e\n\u003cli data-end=\"1452\" data-start=\"1441\"\u003e5.0L V8\u003c\/li\u003e\n\u003cli data-end=\"1464\" data-start=\"1453\"\u003e5.7L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1500\" data-start=\"1466\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"1500\" data-start=\"1470\"\u003eOMC \/ Inboard Applications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-end=\"1538\" data-start=\"1501\"\u003e\n\u003cli data-end=\"1538\" data-start=\"1501\"\u003eGM-based V8 engines (select models)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1599\" data-start=\"1540\"\u003e➡️ Fits \u003cstrong data-end=\"1599\" data-start=\"1548\"\u003estandard rotation small block GM marine engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-end=\"1604\" data-start=\"1601\"\u003e\n\u003ch2 data-end=\"1643\" data-start=\"1606\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"1641\" data-start=\"1609\"\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-end=\"1663\" data-start=\"1644\"\u003eFitment depends on:\u003c\/p\u003e\n\u003cul data-end=\"1749\" data-start=\"1664\"\u003e\n\u003cli data-end=\"1705\" data-start=\"1664\"\u003eEngine rotation (standard vs reverse)\u003c\/li\u003e\n\u003cli data-end=\"1730\" data-start=\"1706\"\u003ePulley configuration\u003c\/li\u003e\n\u003cli data-end=\"1749\" data-start=\"1731\"\u003eMounting style\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1851\" data-start=\"1751\"\u003e⚠️ Always confirm using engine serial number before ordering to ensure correct rotation and fitment.\u003c\/p\u003e\n\u003chr data-end=\"1856\" data-start=\"1853\"\u003e\n\u003ch2 data-end=\"1897\" data-start=\"1858\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"1897\" data-start=\"1861\"\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-end=\"1941\" data-start=\"1898\"\u003eReplace the circulating pump if you notice:\u003c\/p\u003e\n\u003cul data-end=\"2127\" data-start=\"1942\"\u003e\n\u003cli data-end=\"1982\" data-start=\"1942\"\u003eEngine overheating at all RPM ranges\u003c\/li\u003e\n\u003cli data-end=\"2026\" data-start=\"1983\"\u003eCoolant or water leaking from weep hole\u003c\/li\u003e\n\u003cli data-end=\"2061\" data-start=\"2027\"\u003eBearing noise or pulley wobble\u003c\/li\u003e\n\u003cli data-end=\"2093\" data-start=\"2062\"\u003eReduced coolant circulation\u003c\/li\u003e\n\u003cli data-end=\"2127\" data-start=\"2094\"\u003eCorrosion inside pump housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2180\" data-start=\"2129\"\u003eTypical lifespan: \u003cstrong data-end=\"2180\" data-start=\"2147\"\u003e5–10 years depending on usage\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-end=\"2185\" data-start=\"2182\"\u003e\n\u003ch2 data-end=\"2212\" data-start=\"2187\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"2212\" data-start=\"2190\"\u003eInstallation Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-end=\"2429\" data-start=\"2213\"\u003e\n\u003cli data-end=\"2254\" data-start=\"2213\"\u003eVerify engine rotation before install\u003c\/li\u003e\n\u003cli data-end=\"2307\" data-start=\"2255\"\u003eReplace gasket and ensure clean mounting surface\u003c\/li\u003e\n\u003cli data-end=\"2352\" data-start=\"2308\"\u003eInspect belts and pulleys during service\u003c\/li\u003e\n\u003cli data-end=\"2389\" data-start=\"2353\"\u003eTorque bolts evenly to OEM specs\u003c\/li\u003e\n\u003cli data-end=\"2429\" data-start=\"2390\"\u003ePrime cooling system before startup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2434\" data-start=\"2431\"\u003e\n\u003ch2 data-end=\"2478\" data-start=\"2436\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"2478\" data-start=\"2439\"\u003eAlternate \/ Superseded Part Numbers\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-end=\"2508\" data-start=\"2480\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"2508\" data-start=\"2484\"\u003eOEM Cross References\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-end=\"2611\" data-start=\"2509\"\u003e\n\u003cli data-end=\"2575\" data-start=\"2509\"\u003eMercury \/ MerCruiser:\n\u003cul data-end=\"2575\" data-start=\"2537\"\u003e\n\u003cli data-end=\"2553\" data-start=\"2537\"\u003e\u003cstrong data-end=\"2551\" data-start=\"2539\"\u003e807151A9\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-end=\"2575\" data-start=\"2556\"\u003e\u003cstrong data-end=\"2573\" data-start=\"2558\"\u003e46-807151A9\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2611\" data-start=\"2577\"\u003eVolvo Penta:\n\u003cul data-end=\"2611\" data-start=\"2596\"\u003e\n\u003cli data-end=\"2611\" data-start=\"2596\"\u003e\u003cstrong data-end=\"2609\" data-start=\"2598\"\u003e3857796\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2616\" data-start=\"2613\"\u003e\n\u003ch3 data-end=\"2654\" data-start=\"2618\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"2654\" data-start=\"2622\"\u003eAftermarket Cross References\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-end=\"2696\" data-start=\"2655\"\u003e\n\u003cli data-end=\"2679\" data-start=\"2655\"\u003eMallory: \u003cstrong data-end=\"2677\" data-start=\"2666\"\u003e9-42607\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2696\" data-start=\"2680\"\u003eGLM: \u003cstrong data-end=\"2696\" data-start=\"2687\"\u003e15090\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2701\" data-start=\"2698\"\u003e\n\u003ch2 data-end=\"2720\" data-start=\"2703\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"2718\" data-start=\"2706\"\u003eShipping\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-end=\"2786\" data-start=\"2721\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564241649700,"sku":"SIE-18-3599-2","price":251.34,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/6b8e9ab1-7295-4444-844e-23dfead4032c_31249d72-c359-4e03-bb1c-b9a70e21cd45.png?v=1774159142","url":"https:\/\/marisolmarine.com\/products\/sierra-marine-water-pump-sie-18-3599-2","provider":"Marisol Marine Company","version":"1.0","type":"link"}