Intake Kit Stage 2 4in. for 2004.5-2005 Duramax LLY Gun Metal

The Wehrli 100301-GM is a high-flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly. It replaces restrictive factory plastic parts, improves horsepower, torque, throttle response, and provides cooler intake temperatures by drawing cold air through the inner fender. It features 4" piping with smooth aerodynamic bends and includes a high-flow 4.8" cast aluminum turbo intake horn which removes OEM restrictions and eliminates the factory resonator. Compatible with OEM and upgraded drop-in VGT style turbochargers. Available in custom powder coat colors. Supercedes WCF100637.