Wehrli 20-24 Duramax L5P Auxiliary Coolant Tank Kit - Sparkle Granny Smith

The stock plastic auxiliary coolant reservoir on your 2020-2025 Duramax L5P can look a bit out of place, especially if you're trying to dress up your engine bay. This fabricated aluminum coolant tank from Wehrli Custom Fabrication is designed to replace that factory piece, offering a much cleaner and more custom look. It's built specifically for the fuel cooling system on these trucks, ensuring it does its job while making your engine compartment stand out.

This kit is constructed from durable aluminum and features a custom single-stage powder coating in a unique 'Sparkle Granny Smith' finish. It comes complete with a black anodized billet aluminum cap that's CNC machined for a precise fit, along with all the necessary mounting hardware. The tank is designed to use the factory mounting points, making installation straightforward with basic hand tools. It even includes a pre-formed hose and an overflow flow fitting, so you have everything needed for a clean swap.

Replacing the OEM part numbers 84211275, this auxiliary coolant tank is a direct fit for stock trucks, meaning no other modifications are required. It's a well-built upgrade that not only improves the aesthetics of your engine bay but also provides a solid replacement for the factory plastic reservoir.