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The Wehrli auxiliary coolant tank kit for 2020–2025 Duramax L5P replaces the OEM plastic reservoir with a fabricated aluminum tank in WCFab Red. It uses factory mounting points, installs in the original location and includes a black anodized CNC billet cap, mounting hardware, preformed hose and overflow fitting. The direct-fit kit installs easily with basic hand tools on stock trucks.
Wehrli 20-24 Duramax L5P Auxiliary Coolant Tank Kit - WCFab Red
