Y-Bridge Kit 3in. 2006-2007 Duramax LBZ Shocker Yellow

The Wehrli Custom Fab (WCFab) 100163-SY High-Flow Y-Bridge Kit is designed to significantly improve airflow in 2006-2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LBZ engines by upgrading the OEM upper intake manifold. This kit replaces the problematic factory slip-fit Y-bridge with a more robust 3-inch bolt-together design, along with 3-inch upper and lower intercooler pipes. It includes all necessary seals, clamps, and hardware for installation. This upgrade enhances airflow by 36%, improves durability under boost, and eliminates factory restrictions without requiring any engine tuning, making it compatible with stock trucks. It pairs well with emissions-compliant tuning and drop-in turbochargers for optimal performance.