Get rid of restrictive factory charge pipes and unleash the air power of your Duramax engine! aFe's BladeRunner 3.5" Aluminum Cold Charge Pipe is a perfect addition to your GM truck. Utilizing BladeRunner engineering, this charge pipe smooth out the bends in the pipes so they don't get in the way of airflow so your turbo and engine get the air they need when needed. On top of that they are built with high-quality aFe components like stainless-steel, spring-loaded T-bolt clamps and heavy-duty, 5-ply, polyester-reinforced silicone couplings. Resisting corrosion and strong enough to take added stress from other upgrades you have or plan on having. Get some of the best in your GM, get aFe!