Wehrli Custom Fab 3in High Flow Y-Bridge Kit for 2006-2007 Chevrolet/GMC 2500HD/3500 (LBZ) - Gloss Black

Fits 2006-2007 Chevrolet Silverado and GMC Sierra 2500 HD/3500 models equipped with the 6.6L LBZ Duramax diesel engine.

The factory Y-bridge on the LBZ Duramax is a notorious failure point; its two-piece slip-fit design is prone to blowing apart under high boost levels, leading to significant power loss and poor drivability. The Wehrli Custom Fab (WCFab) High Flow 3" Y-Bridge Kit solves this with a robust, bolt-together two-piece bridge that provides a secure, leak-free sealing surface. This kit streamlines the intake tract with a full 3-inch diameter from the intercooler pipe connection to the engine, resulting in a 36% improvement in airflow over the stock configuration.

Constructed with mandrel-bent tubing and CNC-machined billet flanges, this kit maintains compatibility with the factory grid heater and EGR connection controls. It is a direct bolt-on upgrade that requires no additional tuning or vehicle modifications, making it an ideal solution for both stock trucks and high-performance builds using emissions-compliant tuning.

• WCFab Signature 3" Two-Piece Y-Bridge (Gloss Black finish)
• 3" Mandrel-bent upper intercooler crossover pipe
• 3" Lower intercooler pipe
• 36% increase in airflow over OEM intake
• Compatible with OEM lower passenger side intercooler pipe
• Includes high-temp silicone boot and stainless steel T-bolt clamps
• Includes MAP sensor seal, O-ring seals, and EGR/grid heater hardware
• Made in the USA
• Manufacturer Part Number: WCF100163-GB