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The Wehrli L5P Duramax thermostat housing is a direct replacement for 2017–2025 6.6L Duramax applications, finished in WCFab red powder coat to clean up the engine bay and complement WCFab styling. It installs in place of the OEM housing with no modification and is available in multiple powder-coat finishes to match intake kits, intercooler piping and coolant tank components for a tidy, integrated under-hood look.
Wehrli L5P Duramax Thermostat Housing - WCFab Red
