Check out the WCFab Stage 1 High Flow Intake Bundle Kit for the 2001-2004 6.6L Duramax. This kit replaces the restrictive OEM LB7 Y-bridge, passenger side intercooler pipe, and driver side intercooler pipe with a high flow, 3” mandrel bent aluminum piping kit feeding WCFab's signature TIG welded, CNC machined billet y-bridge base to help increase throttle response, turbo spool up, and reduce EGTs by creating a full 3" intake tract between your turbo and engine.

Kit includes upgraded high quality silicone boots that withstand higher pressures and temperatures than the failure prone, angled factory parts to increase reliability and help eliminate boost leaks. Includes Fuel Pressure Regulator Valve (FPRV) Block Off Kit to allow proper clearance to larger diameter Y-bridge assembly.

***NOTE: Not Compatible BANKS INTERCOOLER assemblies. If you have a Banks intercooler, please use Y-bridge kit WCF100640 (Call to order).***

***NOTE: NOT RECOMMENDED FOR USE WITH S300 OR S400 STYLE TURBOCHARGERS. If you are planning to run a turbo other than an OEM / IHI style upgraded drop in on your setup, please check out our S300 Single Turbo Kit WCF100478 and our S400 Single Turbo Kit WCF100489 or call us for help placing your order.***

• 3" Fabricated Y-Bridge (for OEM style intake horn)
• 3" Passenger (Cold) Side Intercooler Pipe
• 3" Driver (Hot) Side Intercooler Pipe
• 14 ga Aluminum Construction
• FPRV Block Off Kit
• O-Ring Bridge Flange Gaskets
• Map Sensor Seal and Hold Down Bracket 
• Silicone Boots
• T-Bolt Clamps
• Durable Custom Powder Coat Finish
• Made in USA