Wehrli

Black Anodized Billet Aluminum Turbo Drain Flange with #10AN Extended Drain Tube lowers the threaded connection of the oil drain line from the turb...

Replace the lightweight 16G, leak-prone passenger side OEM up pipe in your 2001-2004 6.6L LB7 Duramax with this heavy-duty 11 gauge 2" Stainless up...

Replace the lightweight, leak-prone passenger side OEM up pipe with this heavy-duty 11 gauge 2" Stainless up pipe. HD Stainless Bellows that will n...

Replace the lightweight 16G, leak-prone, 1 5/8" OEM up pipes with these heavy-duty 11 gauge 2" Stainless up pipe kit. HD Stainless Bellows that wil...

Built in house at WCFab our traction bar brackets bolt on to the bottom of the axle tube via the axle u-bolts and weld to the frame on the front en...

The WCFab Splash Shield Kit for 2001-2010 Chevrolet Silverado 2500/3500 HD and GMC Sierra/Denali 2500/3500 HD trucks replaces the easily damaged fa...

Not compatible with the OEM plastic reservoirs. Intended for use only with WCFab aluminum coolant tanks. Not for use with 2011-2016 LMLs, see WCF20...

Replace the lightweight 16G, leak-prone Driver side OEM up pipe with this heavy-duty 11 gauge 2" Stainless up pipe. HD Stainless Bellow that will n...

The WCFab ARP Bolt Kit for 2001-2016 Duramax Up Pipes or LB7 Turbo Down Pipes is comprised of 6 specially selected high strength 12 point ARP faste...

WCFab's 2001-2016 Duramax Billet Exhaust Manifolds replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel...

Clean up the engine bay of your 2001-2019 GM 2500/3500 Duramax truck with this custom powder coated fabricated aluminum brake reservoir cover from ...

Clean up the engine bay of your 2001-2019 GM 2500/3500 Duramax truck with this custom powder coated fabricated aluminum brake reservoir cover from ...

Clean up the engine bay of your 2001-2019 GM 2500/3500 Duramax truck with this custom powder coated fabricated aluminum brake reservoir cover from ...

4" Intake Kit for 2003-2007 Dodge Ram 2500 / 3500 5.9L Cummins with Factory or OEM style Turbocharger. - - This high flow, fabricated aluminum inta...

Aluminum Upper Coolant Pipe for 2003-2009 Cummins replaces the OEM rubber upper coolant hose and comes powder coated in your choice of colors! For ...

WCFab 4" Turbo Down Pipe for 2004.5-2007 5.9L Cummins with High Mount style turbo on 2nd Gen style exhaust manifold allows for a quick and simple d...

Replace the restrictive crushed factory down pipe with this full 3" down pipe. High Temp Ceramic Coated for protection. For use with factory turbo ...

Replace the restrictive crushed factory turbo down pipe / exhaust front pipe on the 6.6L Duramax Diesel V8 found in the 2004.5 - 2010 Chevrolet Sil...

LLY, LBZ, LMM Duramax 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 u...

LLY, LBZ, LMM Duramax 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 u...

Reduce under hood temps, increase turbocharger efficiency and clean up the engine bay on your 2004.5-2016 Chevrolet Silverado or GMC Sierra 2500 / ...

Replace the fragile plastic OEM fittings on the top of your 2004.5-2010 LLY/LBZ/LMM Duramax engine which are prone to damage with these high qualit...

The 3.5" High Flow Passenger (Cold) Side Intercooler Pipe Kit for 2006-2010 LBZ/LMM Duramax replaces the failure prone factory plastic piece with a...

The Top Outlet Billet Thermostat Housing and Upper Coolant Pipe Kit for 2006-2010 LBZ/LMM Duramax replaces the OEM upper radiator hose that normall...

The Top Outlet Billet Thermostat Housing and Upper Coolant Pipe Kit for 2006-2010 LBZ/LMM Duramax replaces the OEM upper radiator hose that normall...

The 3.5" High Flow Intercooler Outlet Elbow for 2006-2010 LBZ/LMM Duramax replaces the factory plastic piece pipe with a high flow, 14 ga. aluminum...

Clean up the engine bay of your 2006-2024 Dodge Ram 2500/3500 5.9L or 6.7L Cummins truck with this custom powder coated fabricated aluminum brake r...

Aluminum Upper Coolant Pipe for 2010-2018 6.7L Cummins equipped Ram 2500 / 3500 HD trucks. Replaces the OEM rubber upper coolant hose for the radia...

Aluminum Upper Coolant Pipe for 2010-2018 6.7L Cummins equipped Ram 2500 / 3500 HD trucks. Replaces the OEM rubber upper coolant hose for the radia...

Aluminum Upper Coolant Pipe for 2010-2018 6.7L Cummins equipped Ram 2500 / 3500 HD trucks. Replaces the OEM rubber upper coolant hose for the radia...

Aluminum Upper Coolant Pipe for 2010-2018 6.7L Cummins equipped Ram 2500 / 3500 HD trucks. Replaces the OEM rubber upper coolant hose for the radia...

Clean up the engine bay on your 2010-2024 6.7L Cummins by replacing the flimsy plastic OEM cover for the EGR crossover tube and throttle valve with...

Replace the restrictive crushed factory down pipe with this full 3" down pipe. For use with factory turbo or factory style drop in turbo. 2015.5 an...

Replace the restrictive crushed factory down pipe on your 2011-2016 LML Duramax with this full 3" Stainless Steel down pipe. For use with factory t...

2011-2016 LML Crew Cab Duramax Fass Fuel System Relocation Mounting Bracket for Chevy Silverado or GMC Sierra 2500 / 3500 trucks. WCFab's precision...

The 3" High Flow Driver side Intercooler pipe for 2011-2016 LML Duramax replaces the factory two piece 2 1/2" pipe with a high flow one piece 3" pi...

The 3" High Flow Driver side Intercooler pipe for 2011-2016 LML Duramax replaces the factory two piece 2 1/2" pipe with a high flow one piece 3" pi...

The 3" High Flow Driver side Intercooler pipe for 2011-2016 LML Duramax replaces the factory two piece 2 1/2" pipe with a high flow one piece 3" pi...

The 3" High Flow Driver side Intercooler pipe for 2011-2016 LML Duramax replaces the factory two piece 2 1/2" pipe with a high flow one piece 3" pi...

Fabricated Aluminum Coolant Tank Kit for 2011-2016 6.6L Duramax Diesel equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck. Mounts in O...

Fabricated Aluminum Coolant Tank Kit for 2011-2016 6.6L Duramax Diesel equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck. Mounts in O...

Fabricated Aluminum Coolant Tank Kit for 2011-2016 6.6L Duramax Diesel equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck. Mounts in O...

This quick and easy to install, billet aluminum plate allows you to clean up your engine bay in minutes by removing the big plastic resonator conne...

Aluminum Upper Coolant Pipe for 2011-2016 LML Duramax replaces the OEM rubber upper coolant hose and comes powder coated color of choice! For use w...

Aluminum Upper Coolant Pipe for 2011-2016 LML Duramax replaces the OEM rubber upper coolant hose and comes powder coated color of choice! For use w...

Aluminum Upper Coolant Pipe for 2011-2016 LML Duramax replaces the OEM rubber upper coolant hose and comes powder coated color of choice! For use w...

WCFab 2011-2016 GM LML 6.6L Duramax 4" Intake Kit with Air Box. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filt...

The 3.5" High Flow Passenger Side Intercooler Pipe for 2011-2016 LML Duramax replaces the factory plastic two-piece pipe with a high flow, 14 ga. a...