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The Wehrli auxiliary coolant tank kit for 2020–2025 Duramax L5P replaces the factory plastic auxiliary reservoir with a fabricated aluminum tank in Fine Texture Black. It mounts in the OEM location using stock mounting points and comes with a black anodized CNC billet cap, mounting hardware, preformed hose and overflow fitting. Built for direct fitment, installation is simple with basic hand tools.
Wehrli 20-24 Duramax L5P Auxiliary Coolant Tank Kit - Fine Texture Black
