Mishimoto 01-07 Chevy/GMC 6.6L Duramax Degas Tank - Natural

If you're working on your 2001-2007 Chevy or GMC with a 6.6L Duramax engine, and your factory plastic degas tank is showing its age – brittle, discolored, or even leaking – it's time for an upgrade. This Mishimoto aluminum degas tank is built to last, replacing that aging plastic with a solid, TIG-welded aluminum construction that won't degrade over time. It's designed to be the last degas tank you'll ever need to install on your truck.

Beyond just durability, this tank offers practical advantages. It's specifically designed to provide extra clearance for larger single turbo setups, meaning you won't have to worry about trimming or melting your new tank when going for that big turbo upgrade. The natural aluminum finish is ready for customization, whether you want to powder coat it, anodize it, or leave it as is for a clean, custom look. Plus, the integrated internal baffles help keep coolant near the overflow port during aggressive driving, preventing air from entering the cooling system. The built-in sight glass makes checking your coolant level straightforward, and it comes with a plug-and-play coolant level sensor for easy installation.

This degas tank fits a wide range of Duramax-equipped trucks, including models like the 2001-2006 Silverado/Sierra 2500 HD and 3500, as well as the 2006-2007 Express/Savana vans. It also increases coolant capacity by 55% over the stock unit, giving you a bit more buffer. Mishimoto backs this tank with their signature lifetime warranty, so you can install it with confidence.