Wehrli

Replacement Billet ORB Fill Cap for WCFab Duramax/Cummins AAM 11.5" Rear Differential Cover (WCF100113) and 2020-2024 GM 2500/3500HD & 2019-202...

Replacement Billet ORB Fill Cap for WCFab Duramax/Cummins AAM 11.5" Rear Differential Cover (WCF100113) and 2020-2024 GM 2500/3500HD & 2019-202...

Complete Oil Line Kit for L5P Duramax Engine with S400 Turbo mounted on 6" tall pedestal. For use with WCFab T4 Pedestal (WCF100325). Cannot guaran...

The factory LBZ/LMM Y-bridge is a poorly designed slip-in style two piece bridge with very little support that is prone to blowing apart under boos...

This Premium Duramax/Cummins Rear Differential Cover Bolt Kit is an optional upgrade for Wehrli Custom Fab Diff Covers comprised of 14 specially se...

4" Universal Powder Coated Intake elbow features ports for intake sensors. Includes air filter, Outerwears cover and installation hardware.

4" Universal Powder Coated Intake elbow features ports for intake sensors. Includes air filter, Outerwears cover and installation hardware.

4" Universal Powder Coated Intake elbow features ports for intake sensors. Includes air filter, Outerwears cover and installation hardware.

4" Universal Powder Coated Intake elbow features ports for intake sensors. Includes air filter, Outerwears cover and installation hardware.

4" Universal Powder Coated Intake elbow features ports for intake sensors. Includes air filter, Outerwears cover and installation hardware.

4" Universal Powder Coated Intake elbow features ports for intake sensors. Includes air filter, Outerwears cover and installation hardware.

4" Universal Powder Coated Intake elbow features ports for intake sensors. Includes air filter, Outerwears cover and installation hardware.

4" Universal Powder Coated Intake elbow features ports for intake sensors. Includes air filter, Outerwears cover and installation hardware.

5" Universal Powder Coated Intake elbow features ports for intake sensors. Includes air filter, Outerwears cover and installation hardware.

Cummins High Mount 2nd Gen Swap Oil Feed and Drain Line Kit, with extended oil drain fitting assembly. Teflon lined stainless steel braided #6 feed...

Billet Aluminum Black Anodized Coolant Plug for Duramax Engine Cover, for 1.1" bore. Includes high temperature silicone O-ring seal.

The factory LBZ/LMM Y-bridge is a poorly designed slip-in style two piece bridge with very little support that is prone to blowing apart under boos...

Built in house at WCFab our traction bar brackets weld on to the bottom of the axle tube and weld to the frame on the front end. Grade 8 hardware c...

High quality preformed universal 1/2" heater hose assembly with billet aluminum quick-connect fitting replaces the leak prone OEM fitting. Servicab...

Service Hardware kit for WCFab's GM Billet Heater Core Fitting Kit. Includes Retainer Clip and Two O-Rings.

LLY/LBZ/LMM/LML Duramax 3" Down pipe for S400 turbo with 4.6" Diameter flat exhaust outlet flange (Half marmon). This down pipe mates to the exhaus...

Heavy Duty Fabricated Turbo Pedestal allows you to mount a T4 flange style Turbo for custom build racing applications

This Thermostat Housing for 2017-2025 6.6L Duramax is a direct replacement upgrade for the unsightly OEM part. Comes powder coated in your choice o...

This Thermostat Housing for 2017-2025 6.6L Duramax is a direct replacement upgrade for the unsightly OEM part. Comes powder coated in your choice o...