{"product_id":"a-premium-thermostat-housing-assembly-for-gm-8-cyl-4-3l-5-3l-6-2l-oe-fit-corrosion-resistant","title":"A-Premium Thermostat Housing Assembly for GM 8-Cyl 4.3L\/5.3L\/6.2L — OE Fit, Corrosion-Resistant","description":"\u003cp\u003e\u003cstrong\u003eA-Premium Engine Coolant Thermostat Housing Assembly is a direct-fit replacement designed for GM 8-cylinder 4.3L, 5.3L and 6.2L engines to restore proper coolant routing and reliable thermostat operation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis thermostat housing assembly from A-Premium replaces worn or leaking housings on a range of Chevrolet, GMC and Cadillac models. Built to match OE mounting points and coolant passages, the unit accepts the factory thermostat and seals using the original-style flange. It’s intended for owners and technicians who need a dependable replacement that restores correct engine warm-up behavior and coolant circulation without custom modifications.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and engines will this housing fit?\u003c\/h3\u003e\n\u003cp\u003eThe assembly fits many GM trucks, SUVs and performance models produced in the mid-2010s and later. Confirm engine displacement and year before ordering to ensure compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChevrolet: Corvette 2014 (6.2L); Silverado 1500 (2014–2018: 4.3L\/5.3L\/6.2L; 2019 LD: 5.3L); Suburban (2015–2020); Tahoe (2014–2020).\u003c\/li\u003e\n  \u003cli\u003eGMC: Sierra 1500 (2014–2018: 4.3L\/5.3L\/6.2L; 2019 Limited: 5.3L); Yukon (2014–2020: 5.3L); Yukon XL (2015–2020: 5.3L\/6.2L).\u003c\/li\u003e\n  \u003cli\u003eCadillac: Escalade \u0026amp; Escalade ESV (2015–2020: 6.2L).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key dimensions, thermostat spec, and mounting details?\u003c\/h3\u003e\n\u003cp\u003eThis housing includes measured flange and mounting information so installers can quickly verify fit against the vehicle. The thermostat opening and bolt pattern mirror factory geometry for straightforward replacement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBolt hole center-to-center examples: 3.00 in, 2.8 in and 2.8 in (three mounting points).\u003c\/li\u003e\n  \u003cli\u003eFlange dimensions: length 3.33 in; width 3.39 in; thickness 0.40 in.\u003c\/li\u003e\n  \u003cli\u003eInside coolant bore diameter: 1.06 in; thermostat opening rated at approximately 207°F.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and benefits does the A-Premium unit offer?\u003c\/h3\u003e\n\u003cp\u003eA-Premium builds this housing using materials and processes intended to resist corrosion and stand up to engine bay conditions. The construction emphasizes a stable seal surface and durable mounting boss areas to reduce the chance of leaks and premature failure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCorrosion-resistant construction to help withstand coolant chemistry and heat cycles.\u003c\/li\u003e\n  \u003cli\u003eDurable flange and mounting areas to maintain reliable sealing over time.\u003c\/li\u003e\n  \u003cli\u003eDesigned for stable coolant flow and repeatable thermostat operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s included, and how does A-Premium back the product?\u003c\/h3\u003e\n\u003cp\u003eThe package supplies the thermostat housing assembly sized for the listed GM engines; check whether your vehicle requires additional gaskets or sensors. A-Premium supports the part with a one-year, unlimited-mileage warranty to protect against defects.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePackage contents reference: three mounting holes, flange dimensions, and inside diameter details for installer reference.\u003c\/li\u003e\n  \u003cli\u003eReference numbers associated with fitment: 902-2090, 12674639, 12666569, 1511125 (use to cross-check application).\u003c\/li\u003e\n  \u003cli\u003eA-Premium one-year unlimited-mileage guarantee covers manufacturing defects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This thermostat housing assembly is aimed at DIY mechanics, independent repair shops, and fleet maintenance teams who need a reliable, direct-fit replacement for GM 4.3L, 5.3L and 6.2L V8 engines. If your vehicle shows coolant leaks at the housing, has thermostat-related warm-up problems, or you’re rebuilding the cooling system, this A-Premium housing offers a practical, OEM-aligned solution backed by a one-year warranty.\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: Does this housing include the thermostat?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The listing is for the housing assembly; check if your package includes a thermostat—some installs require purchasing the thermostat separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this a direct OEM replacement for my 2015 Tahoe 5.3L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it’s designed to be a direct-fit replacement for 2015–2020 Tahoe 5.3L models, but verify engine code and reference numbers before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"A-Premium","offers":[{"title":"Default Title","offer_id":48085582119070,"sku":"B0CQ82ZLMP","price":37.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/a-premium-thermostat-housing-front-view_a7faf778-177e-492c-af92-e256e321ade8.jpg?v=1785873974","url":"https:\/\/northtrailauto.ca\/products\/a-premium-thermostat-housing-assembly-for-gm-8-cyl-4-3l-5-3l-6-2l-oe-fit-corrosion-resistant","provider":"North Trail Auto","version":"1.0","type":"link"}