Wehrli 20-24 Duramax L5P Auxiliary Coolant Tank Kit - Cat Yellow

The stock plastic auxiliary coolant reservoir on your 2020-2025 Duramax L5P can look a bit out of place, especially if you're aiming for a cleaner engine bay. This fabricated aluminum coolant tank kit from Wehrli Custom Fabrication is designed to replace that clear plastic unit, offering a much more finished appearance. It's built specifically for the fuel cooling system on your Silverado 2500 HD/3500 HD or Sierra 2500 HD/3500 HD, ensuring it integrates smoothly.

This kit features a custom single-stage powder coating in Cat Yellow, giving your engine bay a pop of color. The tank itself is made from fabricated aluminum, a solid choice for durability and a cleaner look than the factory plastic. It comes with a black anodized billet aluminum cap that's CNC machined for a precise fit, along with an overflow flow fitting and a preformed hose. Because it uses the OEM mounting points and is designed as a direct replacement, installation is straightforward with basic hand tools, meaning no other modifications are necessary for a clean install.