Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The WCFab thermostat housing for 2017–2025 6.6L L5P Duramax replaces the factory housing to tidy the engine bay and match other WCFab upgrades. Powder-coated in Bengal Silver, it installs as a direct replacement and preserves OEM coolant routing while improving visual coordination with WCFab intake and coolant components. Simple installation restores a cleaner engine bay appearance.
Wehrli L5P Duramax Thermostat Housing - Bengal Silver
