Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The Wehrli WCFab 4" high-flow cast aluminum turbo intake horn is a bolt-on upgrade for 2001–2004 Chevrolet Silverado and GMC 2500/3500 HD trucks with the 6.6L LB7 Duramax. It replaces the restrictive OEM inlet, flows about 40% better than stock, and is compatible with stock or drop-in IHI turbos. Works with 4" boot connections; custom powder coat and mounting hardware included. Made in USA.
Wehrli 01-04 Duramax LB7 4in High Flow Intake Horn - WCFab Grey
