Wehrli Thermostat Housings

Shop Wehrli Custom Fabrication thermostat housings for diesel truck cooling system upgrades, OEM replacement service, and cleaner engine bay builds. This collection includes WCFab thermostat housings, billet thermostat housing upgrades, coolant elbow kits, upper coolant pipe and thermostat housing kits, silicone boots, T-bolt clamps, auxiliary port options, and related coolant system components for select Duramax, Cummins, and Power Stroke applications. Many Wehrli thermostat housings are designed as direct replacement upgrades for factory OEM thermostat housings, with CNC-machined billet aluminum or fabricated construction and powder coat finish options depending on the application.