Wehrli 3in Y-Bridge Kit, Bengal Grey, for 2006–2007 GMC Sierra 3500HD LBZ Duramax. High-flow two-piece upgrade replacing the weak factory upper intake.

The bolt-together 3-inch Y-bridge and intercooler pipes provide a continuous 3-inch tract from charge pipe to intake runners. Mandrel bends and CNC-machined billet flanges improve flow and durability, while provisions retain the factory grid heater and EGR controls. Compatible with stock trucks, finished in Bengal Grey. No tuning required. Made in the USA.

Features

• Up to 36% airflow over stock
• 3" two-piece, bolt-together Y-bridge
• 3" upper and lower intercooler pipes
• CNC billet flanges, smooth mandrel bends
• Complete install kit; OEM lower pipe compatible; WCFab 3.5" upgrade ready (WCF100367)

Questions or planning a build? Call Texas at 512-982-9393 or California at 562-981-6800. Visit us in Austin, TX or the Los Angeles area for professional installation and customization.

Buying multiple items? Ask about shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov