{"product_id":"kpalag-mercruiser-thermostat-kit-for-v6-v8-4-3-8-2l-160-f-brass-stainless-with-housing-sleeve-gaskets","title":"KPALAG MerCruiser Thermostat Kit for V6 \u0026 V8 4.3–8.2L (160°F) Brass\/Stainless with Housing Sleeve \u0026 Gaskets","description":"\u003cp\u003e\u003cstrong\u003eKPALAG's thermostat kit is a ready-to-install replacement for MerCruiser V6 and V8 engines (4.3L–8.2L, 1987–2016) that opens at 160°F and includes a brass\/stainless thermostat, housing sleeve, and multiple gaskets.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis complete kit supplies the core cooling control component plus the sealing parts needed to service MerCruiser GM-based marine engines. Built from brass and stainless-steel materials for corrosion resistance and predictable operation, the thermostat begins to open at 160°F to help maintain engine operating temperature. The package also contains a housing sleeve and a set of three layered fiber gaskets designed for oil and heat resilience, so you can replace the whole assembly without sourcing separate seals.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this thermostat affect boat engine temperature control?\u003c\/h3\u003e\n\u003cp\u003eThe thermostat regulates coolant flow between the engine and the heat exchanger by opening at a precise temperature. That controlled flow helps the engine warm up efficiently and prevents overcooling once operating temperature is reached. Using a replacement that matches OE specifications helps maintain factory-calibrated performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e160°F opening temperature for consistent thermostat actuation\u003c\/li\u003e\n  \u003cli\u003eBrass and stainless-steel construction resists corrosion in marine environments\u003c\/li\u003e\n  \u003cli\u003eMatches replacement numbers like 807252Q5 and 806922 for compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat parts are included and why are the gaskets important?\u003c\/h3\u003e\n\u003cp\u003eThe kit comes with the thermostat, a housing sleeve, one housing gasket, and three additional thermostat gaskets. Gaskets provide reliable sealing between the thermostat housing and engine passages, preventing coolant or oil leaks that can compromise cooling efficiency. The fiberboard gaskets are layered and hardened to withstand heat and fluid exposure common in marine engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne brass\/stainless thermostat with a precision valve\u003c\/li\u003e\n  \u003cli\u003eHousing sleeve to secure the thermostat in place during installation\u003c\/li\u003e\n  \u003cli\u003eFour gaskets (one housing gasket plus three layered thermostat gaskets) rated for oil and heat resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich MerCruiser engines and part numbers does this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis kit is designed for GM-based MerCruiser V6 and V8 engines spanning 4.3L to 8.2L produced between 1987 and 2016. It is intended as a direct-fit replacement for multiple OE and aftermarket part numbers, simplifying cross-referencing when shopping or repairing. Always verify the engine model and year before purchasing to ensure fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with MerCruiser V6 \u0026amp; V8: 4.3L, 5.0L, 5.7L, 7.4L, 8.2L\u003c\/li\u003e\n  \u003cli\u003eService replacement numbers include 807252Q5, 807252T8, 806922, and related OEM codes\u003c\/li\u003e\n  \u003cli\u003eFits model years 1987 through 2016—check engine casting and housing shape for confirmation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what should I prepare?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone familiar with basic marine engine maintenance. The thermostat drops into the housing, the sleeve holds it in place, and the gaskets seal mating surfaces. A torque wrench, gasket scraper, and fresh coolant are typical tools and supplies required to complete the job cleanly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSimple placement: thermostat into housing, sleeve to secure it, then gaskets in proper sequence\u003c\/li\u003e\n  \u003cli\u003eFollow torque specs and surface-cleaning steps to avoid leaks\u003c\/li\u003e\n  \u003cli\u003eRefer to the included instructions for gasket orientation and tightening sequence\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This KPALAG thermostat kit is aimed at boat owners, marine mechanics, and DIY enthusiasts who service GM-based MerCruiser V6 and V8 engines from 1987–2016. It's suitable for anyone needing a full replacement thermostat assembly with matching gaskets and a housing sleeve—especially when cross-referencing OEM numbers like 807252Q5 or 806922 is important for fit. Choose this kit if you want corrosion-resistant materials, a 160°F opening point, and a bundled gasket set to simplify a one-stop repair.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this thermostat fit my MerCruiser 5.7L engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this KPALAG kit fits MerCruiser 5.7L GM engines from 1987–2016, but verify your housing shape and OEM number for exact fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What temperature does the thermostat open at?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The thermostat in this kit opens at 160°F for consistent engine temperature control.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KPALAG","offers":[{"title":"Default Title","offer_id":48084897464478,"sku":"B0D9B4DKRV","price":35.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/kpalag-thermostat-kit-front-view.jpg?v=1785865464","url":"https:\/\/northtrailauto.ca\/products\/kpalag-mercruiser-thermostat-kit-for-v6-v8-4-3-8-2l-160-f-brass-stainless-with-housing-sleeve-gaskets","provider":"North Trail Auto","version":"1.0","type":"link"}