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The Wehrli L5P Duramax thermostat housing is a direct replacement for 2017–2025 6.6L Duramax applications, finished in gloss black powder coat to clean up the engine bay and pair with other WCFab components. It installs in place of the OEM housing without modification and is available in multiple powder-coat colors to coordinate with intake kits, intercooler piping and coolant tank pieces for a cohesive, dressed-up look under the hood.
Wehrli L5P Duramax Thermostat Housing - Gloss Black
