2007.5-2010 Duramax Stage 1 High Flow Intake Bundle (WCF100324)

Fits

Wherli Custom Fab’s Stage 1 upgrade for the 2007.5-2010 LMM Duramax improves airflow from the turbo to the engine, resulting in better throttle response, faster spool-up, and improved efficiency. It eliminates weak factory components that can lead to boost leaks or failures under heavy use.

The 3" Y-Bridge Kit is an upgraded high-flow intake kit for the 2006-2007 LBZ Duramax. The stock Y-bridge is a weak, two-piece slip-fit design prone to failure under boost. Wherli’s 3" bolt-together Y-bridge is stronger, more reliable, and provides improved airflow for better performance and fuel economy. The upper and lower intercooler pipes feature smooth mandrel bends, thick aluminum construction, and CNC machined billet flanges for a secure fit.

The Driver (Hot) Side 3" Intercooler Pipe replaces the restrictive 2.5" factory piece. The original design often fails under increased boost, while Wherli’s 3" pipe maintains durability and ensures consistent performance.

On the Passenger (Cold) Side, the 3.5" High Flow Intercooler Pipe eliminates the failure-prone factory plastic part. Built from 14 ga. aluminum with CNC flanges and double O-ring seals, it provides reliable performance. The kit includes wire clip rings and upgraded silicone boots with stainless steel T-bolt clamps to prevent boost leaks.

Wherli Custom Fab’s kits are available in custom powder coat colors. For optimal performance, pair with emissions-compliant tuning and a drop-in turbocharger.

Part Number:  WCF100328

• WCFab's Signature 3" Two Piece Y-Bridge, with Upper Crossover and Lower Intercooler Pipes (Flows 36% Better Than Stock!)
• 3" Hot (Driver) Side Intercooler Pipe with high-temperature wire-reinforced boot
• 3.5” Cold (Passenger) Side Intercooler Pipe (Flows 47% Better Than Stock!)
• High Quality Silicone Boots & Stainless Steel T-Bolt Clamps
• Map Sensor Seal
• High Temp O-Ring Seals for Grid Heater and EGR
• Y-Bridge O-Ring Flange Seals
• New Up Pipe to EGR Gasket
• New Grid Heater Install Hardware
• New Throttle Valve Support Bracket
• No Tuning Required, Bolt On!
• Compatible with stock trucks. No other modifications or upgrades necessary!
• Custom Powder Coat Finish
• Made in USA

• CSF Aftermarket intercoolers require modification / grinding of intercooler outlet lip for installation.