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The Wehrli L5P Duramax thermostat housing is a direct replacement for 2017–2025 6.6L Duramax applications, finished in semi-gloss black powder coat to clean up the engine bay and blend with other WCFab pieces. It installs in place of the OEM housing with no modification and is offered in several powder-coat colors so you can match intake kits, intercooler piping and coolant tank components for a neat, coordinated engine-bay appearance.
Wehrli L5P Duramax Thermostat Housing - Semi-Gloss Black
