{"product_id":"mercury-23-8m0214947-thermostat-housing-sleeve","title":"Mercury 23-8M0214947 Thermostat Housing Sleeve","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0056\/9429\/2079\/files\/66102c75f8d746adc03b88e1_brand-mercury-precision-parts.png?v=1777130741\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2 data-section-id=\"13hix4g\" data-start=\"0\" data-end=\"51\"\u003eMercury 23-8M0214947 Thermostat Housing Sleeve\u003c\/h2\u003e\n\u003cp data-start=\"54\" data-end=\"354\"\u003eMaintain proper cooling system operation with the Mercury 23-8M0214947 Thermostat Housing Sleeve. Designed as a genuine OEM replacement, this sleeve helps ensure proper thermostat positioning and coolant flow within the thermostat housing assembly on compatible Mercury and MerCruiser marine engines.\u003c\/p\u003e\n\u003cp data-start=\"356\" data-end=\"753\"\u003eThe thermostat housing sleeve plays an important role in directing coolant flow and supporting proper thermostat operation. A damaged, corroded, or worn sleeve can affect cooling system efficiency, create improper thermostat seating, or contribute to inconsistent engine temperatures. Replacing worn cooling system components helps maintain dependable engine performance and long-term reliability.\u003c\/p\u003e\n\u003cp data-start=\"755\" data-end=\"1050\"\u003eManufactured to Mercury Marine factory specifications, the 23-8M0214947 sleeve is built for durability in demanding marine environments where heat, vibration, and moisture are constant factors. Designed as a direct-fit replacement, it installs easily and restores proper cooling system function.\u003c\/p\u003e\n\u003chr data-start=\"1052\" data-end=\"1055\"\u003e\n\u003ch3 data-section-id=\"lmqikf\" data-start=\"1057\" data-end=\"1085\"\u003eCommon Engine Fitments\u003c\/h3\u003e\n\u003cp data-start=\"1086\" data-end=\"1213\"\u003eThe Mercury 23-8M0214947 thermostat housing sleeve is commonly used on select MerCruiser and Mercury Marine engines, including:\u003c\/p\u003e\n\u003cul data-start=\"1215\" data-end=\"1356\"\u003e\n\u003cli data-section-id=\"qunb6y\" data-start=\"1215\" data-end=\"1238\"\u003eMerCruiser 4.3L MPI\u003c\/li\u003e\n\u003cli data-section-id=\"7mr8yw\" data-start=\"1239\" data-end=\"1262\"\u003eMerCruiser 5.0L MPI\u003c\/li\u003e\n\u003cli data-section-id=\"17rar67\" data-start=\"1263\" data-end=\"1286\"\u003eMerCruiser 5.7L MPI\u003c\/li\u003e\n\u003cli data-section-id=\"ei4nmu\" data-start=\"1287\" data-end=\"1309\"\u003eMerCruiser 350 MAG\u003c\/li\u003e\n\u003cli data-section-id=\"sc8cpv\" data-start=\"1310\" data-end=\"1332\"\u003eMerCruiser 377 MAG\u003c\/li\u003e\n\u003cli data-section-id=\"1uz23bd\" data-start=\"1333\" data-end=\"1356\"\u003eMerCruiser 6.2L MPI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1358\" data-end=\"1396\"\u003eThese engines are frequently found in:\u003c\/p\u003e\n\u003cul data-start=\"1398\" data-end=\"1594\"\u003e\n\u003cli data-section-id=\"wmzc5h\" data-start=\"1398\" data-end=\"1434\"\u003eSea Ray sport boats and cruisers\u003c\/li\u003e\n\u003cli data-section-id=\"17p41j7\" data-start=\"1435\" data-end=\"1473\"\u003eChaparral SSi and Signature series\u003c\/li\u003e\n\u003cli data-section-id=\"o2iy28\" data-start=\"1474\" data-end=\"1503\"\u003eFour Winns Horizon models\u003c\/li\u003e\n\u003cli data-section-id=\"x4x59y\" data-start=\"1504\" data-end=\"1535\"\u003eBayliner VR and Ciera boats\u003c\/li\u003e\n\u003cli data-section-id=\"1s485gg\" data-start=\"1536\" data-end=\"1559\"\u003eCrownline bowriders\u003c\/li\u003e\n\u003cli data-section-id=\"ldwe5h\" data-start=\"1560\" data-end=\"1594\"\u003eRegal sport boats and cruisers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1596\" data-end=\"1816\"\u003eThe 23-8M0214947 sleeve is commonly used in thermostat housing assemblies on freshwater and closed-cooling MerCruiser engine systems where proper coolant routing is critical for maintaining stable operating temperatures.\u003c\/p\u003e\n\u003cp data-start=\"1818\" data-end=\"2000\"\u003eFitment can vary depending on engine serial number and thermostat housing configuration, so confirming compatibility with part number \u003cstrong data-start=\"1952\" data-end=\"1968\"\u003e23-8M0214947\u003c\/strong\u003e before ordering is recommended.\u003c\/p\u003e\n\u003chr data-start=\"2002\" data-end=\"2005\"\u003e\n\u003ch3 data-section-id=\"1iz91iu\" data-start=\"2007\" data-end=\"2023\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"2024\" data-end=\"2377\"\u003e\n\u003cli data-section-id=\"gfbum1\" data-start=\"2024\" data-end=\"2080\"\u003eGenuine Mercury Marine OEM thermostat housing sleeve\u003c\/li\u003e\n\u003cli data-section-id=\"1f307km\" data-start=\"2081\" data-end=\"2146\"\u003eHelps maintain proper thermostat positioning and coolant flow\u003c\/li\u003e\n\u003cli data-section-id=\"15dxke6\" data-start=\"2147\" data-end=\"2195\"\u003eSupports reliable cooling system performance\u003c\/li\u003e\n\u003cli data-section-id=\"1qabny6\" data-start=\"2196\" data-end=\"2250\"\u003eDesigned for MerCruiser and Mercury Marine engines\u003c\/li\u003e\n\u003cli data-section-id=\"1ilnc6p\" data-start=\"2251\" data-end=\"2317\"\u003eMarine-grade construction for durability and long service life\u003c\/li\u003e\n\u003cli data-section-id=\"iy0gvr\" data-start=\"2318\" data-end=\"2377\"\u003eDirect-fit replacement for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2379\" data-end=\"2382\"\u003e\n\u003ch3 data-section-id=\"wwalok\" data-start=\"2384\" data-end=\"2430\"\u003eWhy Replace a Thermostat Housing Sleeve?\u003c\/h3\u003e\n\u003cp data-start=\"2431\" data-end=\"2677\"\u003eCooling system components can wear or corrode over time due to heat cycles and coolant exposure. Replacing damaged sleeves helps ensure proper thermostat function, maintain stable engine temperatures, and reduce the risk of cooling system issues.\u003c\/p\u003e\n\u003cp data-start=\"2679\" data-end=\"2888\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eIf you’re servicing a compatible MerCruiser-powered boat, the Mercury 23-8M0214947 thermostat housing sleeve delivers the OEM-quality fit and dependable cooling system performance your engine was designed for.\u003c\/p\u003e","brand":"Land 'N' Sea","offers":[{"title":"Default Title","offer_id":48754079760641,"sku":"710-23-8M0214947","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0056\/9429\/2079\/files\/Screenshot2026-05-09132922.png?v=1778347803","url":"https:\/\/inboardpartshq.com\/products\/mercury-23-8m0214947-thermostat-housing-sleeve","provider":"Inboard Parts HQ","version":"1.0","type":"link"}