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The WCFab thermostat housing for 2017–2025 6.6L L5P Duramax replaces the OEM housing to clean up the engine bay and coordinate with other WCFab upgrades. Powder-coated in Bengal Red to match surrounding parts, it installs as a direct replacement and preserves stock coolant routing while improving appearance. Designed to complement WCFab Upper Coolant Pipes, Intake Kits and Coolant Tanks.
Wehrli L5P Duramax Thermostat Housing - Bengal Red
