Sale

Air and Fuel› Air Cleaners, Filters, Intakes and Components

Wehrli

High Flow Bundle Intake Kit Stage 1 for 2001-2004 Duramax LB7 Cat Yellow

$1,179.00 $1,143.63 Save $35.37

SKU: W005 100411-CAT

In Stock
In Stock
Ships by Jun 9
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Wehrli Stage 1 High Flow Intake Bundle Kit for 2001-2004 6.6L Duramax. Replaces restrictive OEM LB7 Y-bridge, passenger side, and driver side intercooler pipes with 3” mandrel bent aluminum piping. Features WCFab’s TIG welded, CNC machined billet y-bridge base to improve throttle response, turbo spool up, and reduce EGTs. Includes upgraded high-quality silicone boots and a Fuel Pressure Regulator Valve (FPRV) Block Off Kit.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandWehrli
Part NumberW005 100411-CAT

Videos

2001-2004 LB7 Duramax Stage 3 High Flow Intake Bundle Kit

2001-2004 LB7 Duramax Stage 3 High Flow Intake Bundle Kit
WCFab 2001 - 2004 LB7 Duramax Stage 1 High Flow Intake Bundle Kit

WCFab 2001 - 2004 LB7 Duramax Stage 1 High Flow Intake Bundle Kit

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy