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