{"product_id":"mercury-merccruiser-thermostat-kit-807252t5","title":"Mercury MerCruiser Thermostat Kit 807252T5","description":"\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"b52c946a-3c10-4d07-b2f8-b4746f676980\" dir=\"auto\" data-message-model-slug=\"gpt-5-3\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"\u003e\n\u003cp data-start=\"76\" data-end=\"385\"\u003eMercury 807252T5 is a genuine OEM \u003cstrong data-start=\"136\" data-end=\"160\"\u003e160°F thermostat kit\u003c\/strong\u003e for selected MerCruiser sterndrive and inboard engines. Mercury’s official listing identifies it for \u003cstrong data-start=\"262\" data-end=\"327\"\u003eGM V6 and V8 MerCruiser engines with standard cooling systems\u003c\/strong\u003e from \u003cstrong data-start=\"333\" data-end=\"346\"\u003e1987–2016\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"387\" data-end=\"405\"\u003e\u003cstrong data-start=\"387\" data-end=\"403\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"406\" data-end=\"791\"\u003e\n\u003cli data-start=\"406\" data-end=\"465\"\u003eGenuine Mercury Marine \/ Quicksilver OEM thermostat kit\u003c\/li\u003e\n\u003cli data-start=\"466\" data-end=\"494\"\u003ePart number \u003cstrong data-start=\"480\" data-end=\"492\"\u003e807252T5\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"495\" data-end=\"519\"\u003e\u003cstrong data-start=\"497\" data-end=\"517\"\u003e160°F thermostat\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"520\" data-end=\"626\"\u003eBuilt for \u003cstrong data-start=\"532\" data-end=\"590\"\u003eGM V6 and V8 MerCruiser sterndrive and inboard engines\u003c\/strong\u003e with \u003cstrong data-start=\"596\" data-end=\"624\"\u003estandard cooling systems\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"627\" data-end=\"708\"\u003eMercury says the kit contains a \u003cstrong data-start=\"661\" data-end=\"706\"\u003ethermostat, O-rings, and multiple gaskets\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"709\" data-end=\"791\"\u003eDesigned for replacement with common tools \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"793\" data-end=\"1207\"\u003e\u003cstrong data-start=\"793\" data-end=\"817\"\u003eEngine Compatibility\u003c\/strong\u003e\u003cbr data-start=\"817\" data-end=\"820\"\u003eMercury lists 807252T5 for \u003cstrong data-start=\"847\" data-end=\"952\"\u003eall GM V8 and V6 sterndrive and inboard engines built with standard cooling systems from 1987 to 2016\u003c\/strong\u003e. Dealer listings also tie it to MerCruiser applications in that family, including common GM-based V6 and V8 packages, but exact fitment should still be confirmed by \u003cstrong data-start=\"1118\" data-end=\"1152\"\u003eengine model and serial number\u003c\/strong\u003e before ordering. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1209\" data-end=\"1653\"\u003e\u003cstrong data-start=\"1209\" data-end=\"1241\"\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003cbr data-start=\"1241\" data-end=\"1244\"\u003ePlease confirm compatibility in the Mercury Parts Catalog or by exact engine serial number before purchase. Thermostat kits can vary by cooling system type, so matching the exact OEM part number is the safest way to avoid a standard-cooling vs. closed-cooling mismatch. This caution is based on Mercury specifically defining 807252T5 as a \u003cstrong data-start=\"1583\" data-end=\"1610\"\u003estandard cooling system\u003c\/strong\u003e kit. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1655\" data-end=\"2096\"\u003e\u003cstrong data-start=\"1655\" data-end=\"1691\"\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003cbr data-start=\"1691\" data-end=\"1694\"\u003eReplace this thermostat kit when the engine is running too cool, too hot, warming up slowly, showing unstable operating temperature, or when the thermostat housing is opened during cooling-system service and the sealing components are being renewed. That service context is an inference from the part being sold as a complete thermostat kit with seals and gaskets. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2098\" data-end=\"2432\"\u003e\u003cstrong data-start=\"2098\" data-end=\"2120\"\u003eInstallation Notes\u003c\/strong\u003e\u003cbr data-start=\"2120\" data-end=\"2123\"\u003eThis kit is intended as a service-ready replacement and includes the sealing components needed for installation. Use it only on the exact MerCruiser application that calls for \u003cstrong data-start=\"2299\" data-end=\"2311\"\u003e807252T5\u003c\/strong\u003e, and confirm the engine uses the \u003cstrong data-start=\"2345\" data-end=\"2371\"\u003e160°F standard-cooling\u003c\/strong\u003e setup before ordering. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2434\" data-end=\"2475\"\u003e\u003cstrong data-start=\"2434\" data-end=\"2473\"\u003eAlternate \/ Superseded Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2476\" data-end=\"2747\"\u003e\n\u003cli data-start=\"2476\" data-end=\"2492\"\u003e\u003cstrong data-start=\"2478\" data-end=\"2490\"\u003e807252T5\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"2493\" data-end=\"2747\"\u003eCommon cross-reference listings also associate this kit with \u003cstrong data-start=\"2556\" data-end=\"2568\"\u003e807252Q5\u003c\/strong\u003e and \u003cstrong data-start=\"2573\" data-end=\"2585\"\u003e807252T8\u003c\/strong\u003e in the same 160°F MerCruiser thermostat family, but the safest match for this listing is the exact OEM number \u003cstrong data-start=\"2696\" data-end=\"2708\"\u003e807252T5\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2749\" data-end=\"3101\"\u003e\u003cstrong data-start=\"2749\" data-end=\"2771\"\u003eParts Desk Insight\u003c\/strong\u003e\u003cbr data-start=\"2771\" data-end=\"2774\"\u003eThermostat kits are one of those parts where getting the right temperature rating and cooling-system type matters more than the housing looks. On GM-based MerCruiser engines, the correct 160°F standard-cooling kit helps the engine reach and hold the operating temperature Mercury intended. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3103\" data-end=\"3168\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563879202852,"sku":"807252T5","price":76.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/863e4643-99d3-401f-b405-13a7c49c8fca.png?v=1774392316","url":"https:\/\/marisolmarine.com\/products\/mercury-merccruiser-thermostat-kit-807252t5","provider":"Marisol Marine Company","version":"1.0","type":"link"}