Additional Images

Wehrli Custom Fabrication 2001-2004 LB7 Duramax Stage 1 High Flow Intake Bundle Kit - WCF100411

  • 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
Availability: WCFab Red, WCFab Grey and Gloss Black in stock and ships in 3-5 business days. Other colors ship in 10-15 business days.
Shipping: This Product cannot ship to the state of California
Pricing: $1,089.00

Customize Your Item

- Model Year -
 * required
- Powder Coating -
 * required
- Up Pipes & Manifolds -
 * required
Free Shipping!


Already have an air intake and turbo down pipe that you're happy with, but looking to improve your LB7's performance and efficiency by addressing weak points in the OEM components between the turbo and engine?

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.***



Shipping Information

  • Item Requires Shipping
  • 15.0 lbs.
  • W36.0000” x H12.0000” x L12.0000”
  • Free Shipping!
  • This Product cannot ship to the state of California

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.