WCFab Intake Horn, High Flow, 4 in., for 2001-2004 Duramax LB7

Crafted for 2001-2004 GMC and Chevrolet 6.6L Duramax trucks, this WCFab LB7 4 in. high flow cast intake horn is designed to handle increased power and demanding use. The kit includes premium components for secure installation and long-term reliability. A custom powder coat finish enhances durability and appearance. Finished in color option of your choice. Fitment Info, Inclusions, and Features:. Flows 40% Better than Stock. True 4" Inlet Turbo Intake with smooth flowing transition to turbo compressor cover for optimized airflow and drivability. Precision CNC Machined Cast Aluminum Construction. Compatible with stock and OEM-style aftermarket drop in turbochargers with larger compressor wheels. NOT COMPATIBLE WITH OEM INTAKE. Works with performance aftermarket intake systems utilizing a 4" Boot Connection with bead roll. If the rubber / silicone connection of the air intake is molded into the intake pipe / is not removable, that intake will not be compatible with this product. Bolt On Upgrade, No Tuning required Works with stock trucks, no other modifications or upgrades necessary. O-Ring Seal at Face of Turbocharger. Includes Mounting Hardware. Custom Single Stage Powder Coating. Made in the USA.