Wehrli 01-04 Chevrolet 6.6L LB7 Duramax 3in Y-Bridge Kit - Flat Black

The Wehrli WCF100693-FB is a high-flow 3" complete Y-bridge kit designed for 2001-2004 Chevrolet/GMC 6.6L LB7 Duramax engines. It replaces the restrictive OEM Y-bridge and cold side intercooler pipe to increase throttle response and turbo spool. This kit creates a full 3" intake tract from the intercooler outlet to the engine, improving airflow by 50% compared to the OEM upper intake manifold and cold side charge pipe. It also eliminates failure-prone angled OEM intercooler boots and includes an FPRV Block off kit for clearance. For 2001 models, the MAP sensor needs to be relocated to a new port on the bridge, and the original intake runner port plugged. This kit is not recommended for S300 or S400 style turbochargers.