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The Wehrli L5P Duramax thermostat housing is a direct replacement for 2017–2025 6.6L Duramax applications, finished in fine texture black powder coat to tidy the engine bay and coordinate with WCFab upgrades. It installs in place of the OEM housing with no modification and is offered in multiple powder-coat finishes so it complements intake kits, intercooler piping and upper coolant pipes while providing a cleaner, more finished appearance.
Wehrli L5P Duramax Thermostat Housing - Fine Texture Black
