{"product_id":"mercury-mercruiser-thermostat-housing-cover-gasket-fits-mcm-mie-gm-v-6-v-8-engines-27-530451","title":"Mercury – Quicksilver Thermostat Housing Gasket | Cooling System Seal | Marine-Grade Composite | 530451","description":"\u003cp data-start=\"0\" data-end=\"109\"\u003e\u003cstrong data-start=\"0\" data-end=\"107\"\u003eMercury – Quicksilver Thermostat Housing Gasket | Cooling System Seal | Marine-Grade Composite | 530451\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"111\" data-end=\"114\"\u003e\n\u003ch3 data-start=\"116\" data-end=\"134\"\u003e\u003cstrong data-start=\"120\" data-end=\"132\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"135\" data-end=\"723\"\u003eKeeping your cooling system sealed tight is key to consistent engine temperatures and smooth performance. The \u003cstrong data-start=\"245\" data-end=\"308\"\u003eMercury Marine 530451 Quicksilver Thermostat Housing Gasket\u003c\/strong\u003e is built for \u003cstrong data-start=\"322\" data-end=\"401\"\u003eV6 and V8 MerCruiser sterndrives and inboard engines made by General Motors\u003c\/strong\u003e, as well as similar engines used by \u003cstrong data-start=\"438\" data-end=\"445\"\u003eOMC\u003c\/strong\u003e and \u003cstrong data-start=\"450\" data-end=\"465\"\u003eVolvo Penta\u003c\/strong\u003e. Made from durable, heat-resistant composite material, this gasket ensures a tight seal between the housing surfaces to prevent leaks and pressure loss. It’s a simple, reliable way to keep your cooling system working efficiently and your engine protected.\u003c\/p\u003e\n\u003chr data-start=\"725\" data-end=\"728\"\u003e\n\u003ch3 data-start=\"730\" data-end=\"752\"\u003e\u003cstrong data-start=\"734\" data-end=\"750\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"755\" data-end=\"860\"\u003e\n\u003cstrong data-start=\"755\" data-end=\"767\"\u003ePurpose:\u003c\/strong\u003e Seals the thermostat housing to prevent coolant leaks and maintain proper system pressure.\u003c\/li\u003e\n\u003cli data-start=\"863\" data-end=\"966\"\u003e\n\u003cstrong data-start=\"863\" data-end=\"876\"\u003eMaterial:\u003c\/strong\u003e Made from \u003cstrong data-start=\"887\" data-end=\"913\"\u003emarine-grade composite\u003c\/strong\u003e that resists heat, pressure, and coolant exposure.\u003c\/li\u003e\n\u003cli data-start=\"969\" data-end=\"1057\"\u003e\n\u003cstrong data-start=\"969\" data-end=\"980\"\u003eDesign:\u003c\/strong\u003e Cut to \u003cstrong data-start=\"988\" data-end=\"1014\"\u003eOEM Mercury dimensions\u003c\/strong\u003e for a perfect fit and easy installation.\u003c\/li\u003e\n\u003cli data-start=\"1060\" data-end=\"1151\"\u003e\n\u003cstrong data-start=\"1060\" data-end=\"1075\"\u003eDurability:\u003c\/strong\u003e Handles temperature swings, vibration, and constant contact with coolant.\u003c\/li\u003e\n\u003cli data-start=\"1154\" data-end=\"1256\"\u003e\n\u003cstrong data-start=\"1154\" data-end=\"1170\"\u003ePerformance:\u003c\/strong\u003e Keeps the cooling system airtight for stable operating temperatures and efficiency.\u003c\/li\u003e\n\u003cli data-start=\"1259\" data-end=\"1410\"\u003e\n\u003cstrong data-start=\"1259\" data-end=\"1277\"\u003eCompatibility:\u003c\/strong\u003e For \u003cstrong data-start=\"1282\" data-end=\"1347\"\u003eGM-based V6 and V8 MerCruiser sterndrives and inboard engines\u003c\/strong\u003e, plus \u003cstrong data-start=\"1354\" data-end=\"1361\"\u003eOMC\u003c\/strong\u003e and \u003cstrong data-start=\"1366\" data-end=\"1381\"\u003eVolvo Penta\u003c\/strong\u003e engines with matching CID.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1412\" data-end=\"1415\"\u003e\n\u003ch3 data-start=\"1417\" data-end=\"1454\"\u003e\u003cstrong data-start=\"1421\" data-end=\"1452\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1457\" data-end=\"1521\"\u003eMerCruiser V6 sterndrive and inboard engines by General Motors\u003c\/li\u003e\n\u003cli data-start=\"1524\" data-end=\"1588\"\u003eMerCruiser V8 sterndrive and inboard engines by General Motors\u003c\/li\u003e\n\u003cli data-start=\"1591\" data-end=\"1647\"\u003eOMC sterndrive and inboard engines of matching GM size\u003c\/li\u003e\n\u003cli data-start=\"1650\" data-end=\"1728\"\u003eVolvo Penta North America sterndrive and inboard engines of matching GM size\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1730\" data-end=\"1733\"\u003e\n\u003ch3 data-start=\"1735\" data-end=\"1778\"\u003e\u003cstrong data-start=\"1739\" data-end=\"1776\"\u003ePerformance \u0026amp; Real-World Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1779\" data-end=\"2058\"\u003eThe \u003cstrong data-start=\"1783\" data-end=\"1800\"\u003e530451 gasket\u003c\/strong\u003e provides a tight, reliable seal between thermostat housing components, keeping your cooling system leak-free and running efficiently. A worn gasket can cause coolant loss and uneven engine temperatures — problems that can quickly turn into bigger repairs.\u003c\/p\u003e\n\u003cp data-start=\"2060\" data-end=\"2360\"\u003eThis Mercury OEM gasket is built to handle the constant heat and vibration of marine use. It compresses evenly, stays flexible under pressure, and won’t crack or harden over time. Replacing it during thermostat service is an easy way to protect your engine and keep it running cool trip after trip.\u003c\/p\u003e\n\u003chr data-start=\"2362\" data-end=\"2365\"\u003e\n\u003ch3 data-start=\"2367\" data-end=\"2399\"\u003e\u003cstrong data-start=\"2371\" data-end=\"2397\"\u003eWhy Choose Mercury OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2400\" data-end=\"2654\"\u003eThe \u003cstrong data-start=\"2404\" data-end=\"2426\"\u003eQuicksilver 530451\u003c\/strong\u003e is a \u003cstrong data-start=\"2432\" data-end=\"2463\"\u003egenuine Mercury Marine part\u003c\/strong\u003e, designed to match the exact materials, cut, and fit of the factory original. Aftermarket gaskets may look similar but often use lower-quality materials that can shrink or leak under heat.\u003c\/p\u003e\n\u003cp data-start=\"2656\" data-end=\"2823\"\u003eMercury’s OEM gaskets are built for long life and consistent sealing under marine conditions — a small investment that delivers lasting protection and peace of mind.\u003c\/p\u003e\n\u003chr data-start=\"2825\" data-end=\"2828\"\u003e\n\u003ch3 data-start=\"2830\" data-end=\"2843\"\u003e\u003cstrong data-start=\"2834\" data-end=\"2841\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2845\" data-end=\"3025\"\u003e\u003cstrong data-start=\"2845\" data-end=\"2888\"\u003eQ1: Which engines does this gasket fit?\u003c\/strong\u003e\u003cbr data-start=\"2888\" data-end=\"2891\"\u003eIt fits \u003cstrong data-start=\"2899\" data-end=\"2940\"\u003eGM-based MerCruiser V6 and V8 engines\u003c\/strong\u003e, and also works with \u003cstrong data-start=\"2962\" data-end=\"2969\"\u003eOMC\u003c\/strong\u003e and \u003cstrong data-start=\"2974\" data-end=\"2989\"\u003eVolvo Penta\u003c\/strong\u003e engines of the same displacement.\u003c\/p\u003e\n\u003cp data-start=\"3027\" data-end=\"3149\"\u003e\u003cstrong data-start=\"3027\" data-end=\"3055\"\u003eQ2: What’s it made from?\u003c\/strong\u003e\u003cbr data-start=\"3055\" data-end=\"3058\"\u003eIt’s made from a \u003cstrong data-start=\"3075\" data-end=\"3101\"\u003emarine-grade composite\u003c\/strong\u003e designed to resist heat and coolant exposure.\u003c\/p\u003e\n\u003cp data-start=\"3151\" data-end=\"3277\"\u003e\u003cstrong data-start=\"3151\" data-end=\"3182\"\u003eQ3: Why replace the gasket?\u003c\/strong\u003e\u003cbr data-start=\"3182\" data-end=\"3185\"\u003eOld gaskets can harden or crack, allowing coolant to leak and reducing cooling efficiency.\u003c\/p\u003e\n\u003cp data-start=\"3279\" data-end=\"3388\"\u003e\u003cstrong data-start=\"3279\" data-end=\"3315\"\u003eQ4: Can it handle saltwater use?\u003c\/strong\u003e\u003cbr data-start=\"3315\" data-end=\"3318\"\u003eYes — it’s built for \u003cstrong data-start=\"3339\" data-end=\"3372\"\u003eboth saltwater and freshwater\u003c\/strong\u003e environments.\u003c\/p\u003e\n\u003cp data-start=\"3390\" data-end=\"3559\"\u003e\u003cstrong data-start=\"3390\" data-end=\"3433\"\u003eQ5: Why use OEM instead of aftermarket?\u003c\/strong\u003e\u003cbr data-start=\"3433\" data-end=\"3436\"\u003eMercury OEM gaskets guarantee the correct fit, sealing strength, and long-lasting performance in tough marine conditions.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46940848226595,"sku":"27-530451","price":4.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/530451_main.jpg?v=1760631171","url":"https:\/\/partsvu.com\/en-mx\/products\/mercury-mercruiser-thermostat-housing-cover-gasket-fits-mcm-mie-gm-v-6-v-8-engines-27-530451","provider":"PartsVu","version":"1.0","type":"link"}