# Wehrli 01-04 Chevrolet 6.6L LB7 Duramax 3in Y-Bridge Kit - WCFab Red The only High Flow 3" Complete Y-Bridge kit on the market for your LB7 that is compatible with the factory IHI turbo and aftermarket drop in IHI style chargers! Replace the restrictive OEM Y-bridge and cold side intercooler pipe with this high flow 3" kit to increase throttle response and turbo spool up by creating a full 3" intake tract from the intercooler outlet to the engine. Eliminates the angled OEM intercooler boots that are prone for failure. Includes FPRV Block off kit to allow proper clearance to larger diameter Y-bridge. - 50% more airflow than the OEM upper intake manifold and cold side charge pipe! - 3" Passenger Side Intercooler Pipe - 14g Mandrel Bent Aluminum - Includes New O-Ring Bridge Flange Gaskets - Silicone Boots & Stainless T-bolt Clamps - Map Sensor Seal and Hold Down Bracket - Durable Custom Powder Coat Finish - 3" Fabricated Billet Y-Bridge - Includes FPRV Block Off Kit - Made in USA This Part Fits: Year Make Model Submodel 2001-2004 Chevrolet Silverado 2500 HD Base 2001-2004 Chevrolet Silverado 2500 HD LS 2001-2004 Chevrolet Silverado 2500 HD LT 2004 Chevrolet Silverado 2500 HD WT 2001-2004 Chevrolet Silverado 3500 Base 2001-2004 Chevrolet Silverado 3500 LS 2001-2004 Chevrolet Silverado 3500 LT 2004 Chevrolet Silverado 3500 WT 2002-2004 GMC Sierra 2500 HD Base 2001-2002 GMC Sierra 2500 HD SL 2001-2004 GMC Sierra 2500 HD SLE 2001-2004 GMC Sierra 2500 HD SLT 2003-2004 GMC Sierra 2500 HD WT 2002-2004 GMC Sierra 3500 Base 2001-2002 GMC Sierra 3500 SL 2001-2004 GMC Sierra 3500 SLE 2001-2004 GMC Sierra 3500 SLT 2004 GMC Sierra 3500 WT ## Details - **Price:** 1364.81 CAD - **Vendor:** Wehrli - **Type:** Intake Elbows ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1364.81 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Photo - Close Up - User 1 - User 2 - Logo Image --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/wehrli-01-04-chevrolet-6-6l-lb7-duramax-3in-y-bridge-kit-wcfab-red) > Updated: 2026-07-03