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Wehrli auxiliary coolant tank kit for 2020–2025 L5P Duramax applications replaces the factory clear plastic reservoir with a fabricated aluminum, single-stage powder coated tank in Sparkle Granny Smith. It mounts in the OEM location using factory points and includes a black anodized CNC billet cap and hardware. Compatible with stock trucks and installs with basic hand tools; replaces GM part 84211275.
Wehrli 20-24 Duramax L5P Auxiliary Coolant Tank Kit - Sparkle Granny Smith
