Cooling Thermostat Housing Assembly For 2017-2023 Buick Cadillac Chevy GMC 3.6L - Fits LaCrosse, XT5, Blazer, Acadia

If your Buick, Cadillac, Chevy, or GMC with the 3.6L engine is leaking coolant or the thermostat housing is cracked, this replacement assembly should fix it. It's designed to fit models like the Buick LaCrosse (2017-2019), Regal Sportback (2018-2020), Cadillac XT5 (2017-2023) and XT6 (2020-2023), Chevy Blazer (2019-2023), and GMC Acadia (2017-2023). Direct replacement for OEM part numbers 12673659 and 12678779. Made from high-quality materials that meet or exceed factory specs, so it'll hold up to heat and pressure. Comes as one complete housing unit – just swap out the old one. Makes a big difference if you've been seeing coolant puddles or overheating issues. Installation is pretty straightforward if you're handy, but might require some time and basic tools. Helps restore proper cooling system function and prevents bigger engine problems down the road. A reliable aftermarket part that saves you money compared to dealership prices.