Upgrade your 2017-2019 Chevrolet Silverado 2500 HD, 3500 HD, or GMC Sierra 2500 HD with the Wehrli 6.6L L5P Duramax 4-inch intake kit, featuring a durable aluminum air box and high-flow intake pipe. This system replaces the restrictive factory plastic components, significantly increasing airflow to your turbocharger for enhanced horsepower, torque, and throttle response. Constructed from large diameter 4-inch aluminum piping with smooth, aerodynamic bends, it optimizes intake velocity and volume while producing a deeper, more aggressive engine sound during acceleration. The kit's all-aluminum design ensures durability and efficient heat dissipation, helping to maintain cooler intake temperatures by drawing in cold air through the hood’s Ram Air duct and inner fender, which is sealed at the bottom of the hood for a clean engine bay appearance.








