Wehrli 20-24 Duramax L5P Auxiliary Coolant Tank Kit - Semi-Gloss Black

When you're looking to clean up the engine bay on your 2020-2025 Duramax L5P Silverado or Sierra, replacing the factory plastic auxiliary coolant reservoir for the fuel cooler is a great place to start. This kit from Wehrli Custom Fabrication swaps out that clear plastic tank for a well-built, fabricated aluminum one finished in a tough semi-gloss black powder coat.

This isn't just about looks, though. The aluminum construction is more durable than the stock plastic, and the semi-gloss black finish resists corrosion and makes the engine bay look much sharper. It comes with a black anodized billet aluminum cap that's CNC machined for a precise fit, and all the necessary mounting hardware. It uses the original mounting points, so installation is straightforward with basic hand tools, and it's designed to work with stock trucks without needing any other modifications. The kit also includes an overflow flow fitting and a preformed hose to make the swap easier.