WEHRLI CUSTOM FABRICATION

Removing the OEM plastic lower bumper valance on the 2015-2019 Chevrolet Silverado 2500 / 3500 HD trucks is a proven method for improving ground clearance and fitting more aggressive wheel and tire...

Removing the OEM plastic lower bumper valance on the 2015-2019 Chevrolet Silverado 2500 / 3500 HD trucks is a proven method for improving ground clearance and fitting more aggressive wheel and tire...

The WEHRLI WCF100427 2015-2019 Chevrolet Silverado 2500/3500HD Lower Valance Filler Panel with Tow Hook Cutouts is your solution for enhancing the look of your lifted or leveled truck. Designed to...

Enhance the appearance and functionality of your 15-19 Chevrolet 2500/3500 with the WEHRLI WCF100428-FTB Front Bumper Valance Filler Panel Kit. This kit is designed to seamlessly fit your vehicle,...

The WCFab Splash Shield Kit for 2011-2019 Chevrolet Silverado 2500/3500 HD and GMC Sierra/Denali 2500/3500 HD trucks replaces the easily damaged factory plastic part covering the lower engine bay and...

The WCFab 2017-2019 L5P Duramax 2500 / 3500 & 2019+ L5D Duramax 4500 / 5500 / 6500 Fabricated Aluminum Coolant Tank Kit, mounts in OEM coolant tank location. The stock coolant reservoirs on these...

The High Flow Driver Side Intercooler Pipe Kit for 2013-2018 6.7 Cummins replaces the poorly flowing, small diameter, crushed, factory pipe with our high flowing 3.5” Diameter Pipe. Kit...

The Stage 2 upgrade for the 2017-2019 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 truck combines our Stage 1 High Flow Bundle and Stage 2 Intake Kit into a single package...

Clean up the engine bay of your 2001-2025 Chevy Silverado or GMC Sierra 2500 / 3500 6.6L truck equipped with the 6.6L Duramax with this Billet Aluminum Clear Anodized Oil Fill Cap from WCFab. This is...

Clean up the engine bay of your 2001-2025 Chevy Silverado or GMC Sierra 2500 / 3500 truck equipped with the 6.6L Duramax with this Billet Aluminum Black Anodized Oil Fill Cap from WCFab. This is a...

2020-2025 Silverado and Sierra 2500HD / 3500HD CNC machined billet aluminum spacer kits from WCFab move the front bumper forward off the frame horns 3/4 of an inch while maintaining maximum mounting...

2020-2025 Silverado and Sierra 2500HD / 3500HD CNC machined billet aluminum spacer kits from WCFab move the front bumper forward, keeping it off the frame horns 3/8 of an inch, maintaining the...

  2015-2019 Silverado and Sierra 2500HD / 3500HD CNC machined billet aluminum spacer kits from WCFab move the front bumper forward, keeping it off the frame horns 3/8 of an inch while...

The WCFab Splash Shield Kit for 2020-2025 Chevrolet Silverado 2500/3500 HD and GMC Sierra/Denali 2500/3500 HD trucks replace the easily damaged factory plastic part covering the lower engine bay and...

2015-2019 Silverado and Sierra 2500HD / 3500HD CNC machined billet aluminum spacer kits from WCFab move the front bumper forward, keeping it off the frame horns 3/4 of an inch while maintaining the...

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 factory plastic part covering the lower engine bay and...

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 fabricated 3.5" pipe. This part uses a CNC machined...

As a direct replacement for the failure prone OEM thermostat, the Transmission Cooler Thermostat Bypass Plug can drop fluid temperature from 15-50 degrees F by reducing fluid flow restriction to the...

18-20PSI Replacement Coolant Tank Cap, Clear Anodized. Used on WCFab Fabricated Coolant Tanks on 2001-2024 Duramax or 2004.5-2007 & 2010-2024 6.7L Cummins.   - Replacement Cap for WCFab...

This quick and easy to install, billet aluminum plug allows you to clean up your engine bay and get more aggressive turbo sound in minutes by removing the big plastic resonator connected to your OEM...

-4" Shorty Down Pipe (Mates to exhaust system V-band)-4" Intake-Dry Air Filter-Outerwear's Pre-Filter Cover-Oil Feed Line Fitting-Oil Drain Line Assembly-1/2" T4 Spacer plate-3" Hot Side Intercooler...

This kit will allow you to install an S300-based Turbo on your LB7 Duramax. Replacing all OEM plumbing and y-bridge with high flow 3" diameter piping. Oil Lines are high-quality stainless steel...

This kit will allow you to install an S400 based Turbo on your 2004.5-2007 5.9 Cummins with a 2nd Gen Style Exhaust Manifold (Sold Separately). Kit includes all components needed to install the turbo...

High Flow Intake Bundle Package for 2003-2007 5.9L Cummins. Saves $29.00 vs buying components individually! This Kit Includes: WCF100544 - 3" Passenger Side Intercooler Pipe WCF100528 - 3.5" Driver...

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 radiator inlet and comes powder coated in your choice of...

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...

The WCFab 3.5" High Flow Passenger (Cold) Side Intercooler Pipe for 2017-2019 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck replaces the factory plastic two piece...

This fabricated aluminum cover replaces the OEM plastic shroud over the radiator and core support in your 6.7L Cummins equipped 2010-2012 Ram 2500 or 3500 truck to help put the finishing touch on...

Upper Coolant Pipe for 2020-2025 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 truck replaces the ugly OEM rubber upper radiator hose with a fabricated aluminum hard pipe...

2004.5-2007 5.9L Cummins Fabricated Aluminum Coolant Tank Kit, mounts in OEM coolant tank location. Dress up your engine bay by replacing the aging, yellowed plastic coolant reservoir with our...

18-20PSI Replacement Coolant Tank Cap, Black Anodized. Used on WCFab Fabricated Coolant Tanks on 2001-2024 Duramax or 2004.5-07 & 2010-2024 6.7L Cummins.   - Replacement cap for WCFab...

This fabricated aluminum cover replaces the OEM plastic shroud over the radiator and core support in your 6.7L Cummins equipped 2013-2018 Ram 2500 or 3500 truck to help put the finishing touch on...

2001-2004 LB7 Duramax S400/Stock Compound Turbo Kit. 1000 RWHP capable depending upon turbo and fuel system modifications. Recommended for daily driver work trucks and tow rigs looking for...

High Flow Intake Bundle Package for 2003-2007 5.9L Cummins. Saves $29.00 vs buying components individually! This Kit Includes: WCF100544 - 3" Passenger Side Intercooler Pipe WCF100528 - 3.5" Driver...

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 will not crack and leak like OEM. Increase Turbo...

The WEHRLI WCF100622 Upper Coolant Pipe is the perfect upgrade for your 2006-2010 LBZ/LMM 6.6L Duramax-equipped Chevrolet Silverado or GMC Sierra 2500/3500 HD truck. This aluminum coolant pipe is...

Replace the lightweight 16G, leak prone, 1 5/8" OEM up pipes on your 2017-2025 6.6L L5P Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck with these heavy duty 11 gauge 2"...

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...

2001-2007 Duramax Fabricated Aluminum Coolant Tank Kit, mounts in OEM coolant tank location. Dress up your engine bay by replacing the ugly clear plastic coolant reservoir with our custom powder...

 2007.5-2010 LMM Duramax Fabricated Aluminum Coolant Tank Kit, mounts in OEM coolant tank location. Dress up your engine bay by replacing the ugly clear plastic coolant reservoir with our...

Fabricated Aluminum Coolant Tank Kit for 2011-2016 6.6L Duramax Diesel equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck. Mounts in OEM coolant tank location. Dress up your engine bay...

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 not crack and leak like OEM. Increase Turbo spool-up...

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 not crack and leak like OEM. Increase Turbo spool up...

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 pipe from WCFab. Our HD Stainless Bellow that will...

Black Anodized Billet Aluminum Turbo Drain Flange with #10AN Extended Drain Tube lowers the threaded connection of the oil drain line from the turbo drain port for easier access with wrench for...

Twin Turbo Pedestal for LML Duramax. #8 JIC / -8AN turbo drain incorporated into turbo mount. Comes standard with a semi-gloss black powder coat finish, includes hardware for mounting to engine block...

High Flow Intake Bundle Package for 2003-2007 5.9L Cummins. Saves $50.00 vs buying all components individually! This Kit Includes: WCF100544 - 3" Passenger Side Intercooler Pipe WCF100528 - 3.5"...

  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. aluminum one piece 3.5" pipe. This part uses...

High flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on the 2020-2024 L5P 6.6L Duramax equipped Chevrolet Silverado...

The only High Flow 3” Complete Y-Bridge kit on the market for your LB7 that is compatible with the factory IHI turbo and aftermarket drop in IHI style chargers! Replace the restrictive OEM...

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 with OEM GM radiator! Some aftermarket radiators may...

High quality preformed universal 1/2" heater hose assembly with billet aluminum quick-connect fitting replaces the leak prone OEM fitting. Servicable O-ring seals inside of billet fitting install...

WCFab's 4" High flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on the 2020-2025 L5P 6.6L Duramax equipped...

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 Silverado / GMC Sierra 2500 / 3500 HD truck with this...

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 turbo or factory style drop in turbo on trucks using...

Replace the restrictive crushed factory down pipe on your 2015.5-2016 LML Duramax with this full 3" Stainless steel down pipe. For use with factory turbo or factory style drop in turbo on trucks with...

WCFab 3" High Flow Driver (Hot) Side Intercooler pipe for the 2017-2019 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck.   -3" Hot Side Intercooler Pipe-14g...

4" Intake Resonator Pipe for 2017-2019 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck equipped with an OEM or drop in factory style turbocharger. Dress up your...

WCFab 2001-2004 GM LB7 6.6L Duramax Stage 3 High Flow Intake Bundle Kit Stage 3 upgrade for the 2001-2004 LB7 Duramax combines our Stage 1 High Flow Bundle, Stage 2 Intake Kit, and 3" Down Pipe into...

Maintenance - The cleaning / replacement interval depends on your driving conditions. We recommend that you inspect your air filter every 5,000 miles by removing the filter cover and examining...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory...

Maintenance - The cleaning / replacement interval depends on your driving conditions. We recommend that you inspect your air filter every 5,000 miles by removing the filter cover and examining...

4" Intake Resonator Pipe for the Factory (VGT) Turbo on 2020-2025 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck. Dress up your engine bay and remove the plastic...

3 1/2" Turbo Intake Horn for the 2017-2019 L5P Duramax with factory style Turbo. The OEM plastic intake horn is 2.4" in diameter, and we experienced a 25HP Gain with our 3.5" Horn when used with a...

We use and recommend these Outerwears Air Filter Covers for all WCFab air filters used in our turbo kits and intake kits. These Pre-filters are designed to deflect the damaging debris, which can...

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 this custom powder coated fabricated aluminum...

Reduce under hood temps, increase turbocharger efficiency and clean up the engine bay on your 2004.5-2016 Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck equipped with the 6.6L Duramax diesel...

Aluminum Upper Coolant Pipe for 2017-2019 L5P Duramax replaces the OEM rubber upper coolant hose and comes powder coated color of choice! For use with OEM GM radiator. Aftermarket radiators may...

Map Sensor Seal and Bracket used on LB7/LBZ/LMM's when installing WCFab Y-bridge or turbo kits. If your Map sensor is connected to your intake manifold via a hose and IS NOT directly bolted to the...

1" Thick Steel Divided T4 Spacer Plate Kit, Ceramic Coated Black. Includes M10 Mounting Studs 65MM long, nuts, and two T4 Gaskets.   -1" T4 Spacer Plate, Ceramic Coated-M10 Studs & Nuts-(2)...

For use on tuned 2017-2025 L5P Duramax competition trucks equipped with VGT Style Turbochargers.  • Easy to install blanket keeps heat inside the turbo housing• Decreases...

***This kit includes 60" long bars for Regular Cab Long Bed, Extended Cab Short Bed and Crew Cab Short Bed Models*** ***This kit is for 2020-2025 GM HD Trucks*** If you have a Double Cab Long Bed or...

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 end. Grade 8 hardware connects the bars to the mounts...

Traction bars are a necessary upgrade when increasing the horsepower on your truck to prevent the axle from twisting which can lead to broken u-joints, driveshafts, and even twisted axle housings...

Traction bars are a necessary upgrade when increasing the horsepower on your truck to prevent the axle from twisting which can lead to broken u-joints, driveshafts, and even twisted axle housings...

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 end. Grade 8 hardware connects the bars to the mounts...

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 end. Grade 8 hardware connects the bars to the mounts...

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 connects the bars to the mounts on the frame and axle...

***This kit includes 60" long bars for Regular Cab Long Bed, Extended Cab Short Bed and Crew Cab Short Bed Models*** ***This kit is for 2001-2010 GM HD Trucks*** If you have Extended Cab Long Bed or...

***This kit includes 60" long bars for Regular Cab Long Bed, Extended Cab Short Bed, and Crew Cab Short Bed Models*** ***This kit is for 2011-2019 GM HD Trucks*** If you have a Regular Cab Long Bed...

***This kit includes 68" long bars for Extended Cab Long Bed and Crew Cab Long Bed Models*** ***This kit is for 2001-2010 GM HD Trucks*** If you have regular cab long bed, extended cab short bed, or...

***This kit includes 68" long bars for Extended Cab Long Bed and Crew Cab Long Bed Models*** ***This kit is for 2011-2019 GM HD Trucks*** If you have a regular cab long bed, extended cab short bed,...

***This kit includes 60" long bars for Regular Cab Long Bed, Extended Cab Short Bed and Crew Cab Short Bed Models*** For 1999-2010 Ford and 1994-2024 Dodge HD Leaf Spring Rear Suspension Trucks Built...

***This kit includes 68" long bars for Extended Cab Long Bed and Crew Cab Long Bed Models*** For 1999-2010 Ford and 1994-2024 Dodge/Ram HD Leaf Spring Rear Suspension Trucks. Built in house at WCFab...

High Flow Intake Bundle Package for 2003-2007 5.9L Cummins. Saves $50.00 vs buying all components individually! This Kit Includes: WCF100544 - 3" Passenger Side Intercooler Pipe WCF100528 - 3.5"...

2007.5-2009 6.7 Cummins 4" Intake Kit for Factory Turbocharger. This intake works in-conjunction with the factory turbo. 10-12 6.7 Cumins trucks, please see WCF100875 13-18 6.7 Cummins trucks, please...

Aluminum Upper Coolant Pipe with Y-Connector for 2013-2015 6.7L Cummins equipped Ram 2500 / 3500 HD trucks equipped with DUAL (2) RADIATORS. Replaces the OEM rubber upper coolant hose with failure...

  ***This kit includes 68" long bars for Double Cab Long Bed and Crew Cab Long Bed Models*** ***This kit is for 2020-2025 GM HD Trucks*** If you have a Regular Cab Long Bed, Double Cab Short...

WCFab 4" Intake Kit with Air Box for 2004.5-2005 LLY 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck. This high flow, fabricated aluminum intake pipe and air box...

Cummins Thin Flange #10 JIC / -10 AN Male Fitting for Coolant Port Behind Waterpump. Press Fit Connection with High Temp O-Ring Seal and Mounting Bolt Tab.    #10 JIC / -10AN Male Fitting...

Cummins Thick Flange #12 JIC / -12AN Male Fitting for Coolant Port Behind Water Pump. Press Fit Connection with High Temp O-Ring Seal and Mounting Bolt Tab. - #12 JIC / -12AN Male Fitting for Coolant...

The WEHRLI WCF207-100 4IN ID X 4IN LONG SILICONE HUMP BOOT AND CLAMP KIT - REPLACEMENT is a top-quality product that ensures seamless performance and durability to your vehicle's intake system. This...

Contains one 5" ID x 2.5" Boot with Logo and two 5" T-Bolt Clamps. Replacement part for: LB7 Duramax S400/Stock Twin (Compound) Turbo Kit (WCF100570) LB7 Duramax S400 Single Turbo Install Kit...

Contains one 4" ID x 3" ID Straight Boot with Logo and two 4" T-Bolt Clamps. Replacement part for: 2006-2007 LBZ Duramax 4" Intake Kit with Air Box (WCF100192) 2007.5-2010 LMM Duramax 4" Intake Kit...

Contains one 2.75" x 3" ID Straight Reducer 4.5" Long Silicone Boot with Logo, one 3" T-Bolt Clamp and one 2.75" T-Bolt Clamp. Replacement part for: 2017-2019 L5P Duramax 3" Driver (Hot) Side...

Contains one 3" x 4" Silicone Reducer Boot with Logo, and two 3" T-Bolt Clamps. Replacement part for: 2017-2019 L5P Duramax 3" Driver (Hot) Side Intercooler Pipe Kit (WCF100708) 2017-2019 L5P...

Contains one 3.5" x 4" ID Straight Reducer x 3" Long Silicone Boot, one 4" T-Bolt Clamp and one 3.5" T-Bolt Clamp. Replacement part for: 2004.5-2005 LLY Duramax 4" Intake Kit with Air Box...

Contains one 3.5" ID x 5" Long Silicone Hump Boot and two 3.5" T-Bolt Clamps. Replacement part for: 2006-2010 LBZ/LMM Duramax 3.5" Passenger (Cold) Side Intercooler Pipe Kit (WCF100367) 2006-2007...