Wehrli Fab

High Flow Intake Bundle Package for 2001-2004 LB7 Duramax. Saves ~$50.00 vs buying all components individually! EGR Equipped Trucks require additional items, please call.

2011-2016 LML Duramax 4" Intake Kit for Factory Turbocharger. This intake works in-conjunction with the factory turbo inlet horn.

Heavy Duty Traction Bar Kit for 2001-2010 Duramax HD Trucks. We use a poly bushing at the axle mount for decreased road noise & vibration and Curry Enterprise Zinc Coated Johnny Joints at the frame side connection. The bars are 60" Long DOM Steel...

2011-2016 LML Crew Cab Duramax Fass Mount Bracket to locate pump under truck in front of fuel tank.

The only High Flow 3” Complete Y-Bridge kit on the market for your LB7 that is compatible with the factory turbo! Also compatible with S300 or S400 single turbo install kits! Replace the restrictive OEM Y-bridge and cold side intercooler pipe with...

4" Intake Kit for Factory Turbo. 

2006-2007 LBZ Duramax 4" high flow Intake Kit and 3 1/2" Intake Horn for factory turbo. Must be Used in conjunction with WCFab 3" Y-bridge Kit or Basic Intercooler Pipe for Factory Y-Bridge. Will not work with EGR in place.

The LB7 3" Y-Bridge is an upgraded high flow intake bridge for the 2001-2004.5 LB7 Duramax. The OEM LB7 Y-bridge measure’s only 2 3/8” ID, our fabricated bridge is 3" and we use an HD machined beadroll where the T-bolt clamps so there is no...

2001-2010 LB7, LLY, LBZ, LMM Crew Cab Duramax Fass Fuel System Relocation Mounting Bracket. Relocates the FASS fuel system to underneath the truck on the inside of the driver side frame rail.

Fabricated Aluminum Coolant Tank Kit for single turbo applications, mounts in OEM coolant tank location.

Fabricated Aluminum Coolant Tank Kit for single turbo applications, mounts in OEM coolant tank location.

2007.5-2018 6.7 Cummins 4" Intake Kit for Factory Turbocharger. This intake works in-conjunction with the factory turbo. Intake Pipe does not have provisions for OEM CCV line so you must run a CCV reroute kit. If you do not already have a CCV reroute...

3 1/2" Turbo Intake Horn for 2001-2004 LB7 Duramax with factory style IHI Turbo. Great Upgrade for Factory Charger offering Quicker Spool up!

For use on 2004.5-2016 Duramax VGT Style Turbochargers. 

Replacement Dry Air Filter used in WCFab 4" Intake kits and S300 Single Install Kits. This Product is to be used for Off-road Race applications ONLY! Cannot Ship to State of California

2004.5-2005 LLY Duramax 4" high flow Intake Kit and 3 1/2" Intake Horn for factory turbo. Must be Used in conjunction with WCFab 3" Y-bridge Kit. Will not work with EGR in place. May work with other bridge kits but we cannot guarantee fitment!

2001-2004 LB7 Duramax 4" high flow intake kit for factory turbo.

Built in-house at WCFab carrying a LIFETIME WARRANTY against bending or breaking (to the original purchaser). Traction bars are a necessary upgrade when increasing the horsepower on your diesel truck to prevent the axle from twisting which can lead to...

WCFab 2017-2019 GM L5P 6.6L Duramax 4" Intake Kit with Air Box. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved engine...

Built in house at WCFab carrying a LIFETIME WARRANTY against bending or breaking (to original purchaser). Traction bars are a necessary upgrade when increasing the horsepower on your diesel truck to prevent the axle from twisting which can lead to broken...

The WCFab 2001-2016 Duramax Up Pipe Bolt Kit is comprised of 6 specially selected high strength 12 point ARP fasteners and matched washers with a pack of assembly lube and are designed as an upgrade to the OEM fasteners employed on the 2001-2016 and...

For 1999-2018 Ford and Dodge HD Trucks. Built in house at WCFab carrying a LIFETIME WARRANTY against bending or breaking (to original purchaser). Traction bars are a necessary upgrade when increasing the horsepower on your diesel truck to prevent the...

3 1/2" Turbo Intake Horn for the 2017-2019 L5P Duramax with factory style Turbo. The OEM plastic intake horn is 2.4" diameter and we experienced a 25HP Gain with our 3.5" Horn when used with a Max Effort Tune. Tuning not required, this horn will work...

Replace the lightweight, leak prone, 1 5/8" OEM up pipes on your 2017-2019 Duramax with these heavy duty 11 gauge 2" Stainless up pipe kit. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spool-up and decrease EGT's. This kit...

4" Intake Kit for Factory Turbo.

LLY, LBZ, LMM Duramas One Piece High Flow 3" Driver Side Intercooler pipe. Replaces the 2 1/2" OEM inter cooler with a full 3" pipe. The OEM Pipe uses a reverse style bead roll design at the turbo which is prone for blowing off of the turbo under higher...

High Flow Intake Bundle Package for 2003-2007 5.9L Cummins. Saves ~$48.00 vs buying all components individually!

2" Stainless passenger side up pipe with gaskets, for use in single turbo applications built to clear conventional down pipe behind engine between firewall. Will work in twin turbo applications also. Larger diameter for increased exhaust flow and turbo...

2003-2007 5.9L Cummins High Flow 3.5” Intake Horn and Driver Side Intercooler Pipe Kit. Kit replaces the failure prone 3” plastic OEM intercooler pipe with a 3.5” heavy duty 14g Aluminum intercooler pipe and the OEM cast intake horn...

Replacement Dry Air Filter used in WCFab Twin Turbo and S400 Single Install Kits.