
WEHRLI CUSTOM FABRICATION
Some of the top products in this category include the WEHRLI WCF100023 01-04 CHEVROLET 6.6L LB7 DURAMAX FUEL PRESSURE RELIEF VALVE DELETE KIT, WEHRLI WCF100024 01-16 CHEVROLET 6.6L DURAMAX VALLEY CP3 BLOCK OFF PLATE, and WEHRLI WCF100096 11-16 CHEVROLET 6.6L LML DURAMAX TURBO RESONATOR BILLET BLOCK OFF PLATE. Additionally, products like the WEHRLI WCF100229 01-05 & 11-16 CHEVROLET 6.6L DURAMAX HIGH FLOW RAIL FITTING and the WEHRLI WCF100271 01-16 CHEVROLET 6.6L DURAMAX TWIN CP3 PULLEY DEEP OFFSET provide options for those looking to further customize their diesel trucks.
When you choose Wehrli Custom Fabrication, you can trust that you are getting top-of-the-line products designed to enhance the performance of your diesel truck. Upgrade your Duramax, Powerstroke, or Cummins Diesel truck with the best parts in the industry from Wehrli Custom Fabrication.
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WEHRLI WCF100402 6.6L LML DURAMAX HIGH PRESSURE LINE CP3 CONVERSION KIT
WEHRLI CUSTOM FABRICATION
$523.43Longer and Larger I.D. High-Pressure Line than Street Series Kit (WCF100711) and other CP3 Conversion Kits offered on the market which allows for more fuel volume. High pressure fitting at the rail is also a larger I.D. as compared to the standard...$523.43 -
WEHRLI WCF100414 2020-2024 L5P DURAMAX STAGE 2 HIGH FLOW INTAKE BUNDLE KIT
WEHRLI CUSTOM FABRICATION
$1,970.98The Stage 2 upgrade for the 2020-2024 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 providing increased airflow for your turbo and...$1,970.98 -
WEHRLI WCF100404 11-14 GM 2500/3500 HD BUMPER SPACER KIT - 3/4IN
WEHRLI CUSTOM FABRICATION
$267.772011-2014 Silverado 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 surface area for structural integrity. Moving the bumper forward...$267.77 -
WEHRLI WCF100285 11-14 CHEVROLET SILVERADO 2500/3500 HD / DURAMAX LML BUMPER GRILLE
WEHRLI CUSTOM FABRICATION
$229.792011-2014 Chevrolet Silverado HD Bumper Grilles from WCFab are constructed from heavy gauge stainless steel and designed to maintain airflow to your transmission cooler while offering a significant upgrade in protection against flying road debris. The...$229.79 -
WEHRLI WCF100373 17-22 L5P DURAMAX BILLET EXHAUST MANIFOLD KIT W/ GASKETS AND ARP HARDWARE
WEHRLI CUSTOM FABRICATION
$2,011.65WCFab’s 2017-2025 Duramax Billet Exhaust Manifolds with EGR Riser Flange replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components designed to enhance exhaust flow characteristics, improving turbo...$2,011.65 -
WEHRLI WCF100699 GM BILLET HEATER CORE FITTING KIT W/ HOSE
WEHRLI CUSTOM FABRICATION
$96.88High 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 with lube and wire retainer clip connection allows for...$96.88 -
WEHRLI WCF100395 98.5-21 CUMMINS BILLET ALUMINUM BLACK ANODIZED OIL FILL CAP
WEHRLI CUSTOM FABRICATION
$79.39Clean up the engine bay of your 1998.5-2024 Cummins with this Billet Aluminum Black Anodized Oil Fill Cap from WCFab. This is a complete cap, not a cover. Direct OEM replacement for the factory plastic part. Includes o-ring seal. CNC machined in the USA...$79.39 -
WEHRLI WCF100394 98.5-21 CUMMINS BILLET ALUMINUM CLEAR ANODIZED OIL FILL CAP
WEHRLI CUSTOM FABRICATION
$79.39Clean up the engine bay of your 1998.5-2024 Cummins with this Billet Aluminum Clear Anodized Oil Fill Cap from WCFab. This is a complete cap, not a cover. Direct OEM replacement for the factory plastic part. Includes o-ring seal. CNC machined in the USA...$79.39 -
WEHRLI WCF100114 2020-2024 GM 2500/3500HD & 2019-2023 RAM 2500/3500 REAR DIFFERENTIAL COVER
WEHRLI CUSTOM FABRICATION
$511.02Fabricated Aluminum Differential Cover for Rear Axle on 2020-2025 GM Duramax HD Trucks and 2019-2024 Dodge Ram 2500/3500. Comes finished in your choice of WCFab's signature custom powder coat colors for a look as unique as your truck. Replaces the...$511.02 -
WEHRLI WCF100352 | 2004.5-2010 LLY/LBZ/LMM DURAMAX DRIVER (HOT) SIDE 3" INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$423.55LLY, 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 uses a reverse style bead roll design at the turbo which is prone for blowing off of the turbo under higher...$423.55 -
WEHRLI WCF100644 11-16 CHEVROLET 6.6L LML DURAMAX TWIN TURBO STYLE COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$464.23LML Duramax Fabricated Aluminum Coolant Tank Kit for Twin Turbo Applications mounts on passenger side fender. Does not allow use of passenger side battery in OEM location, must be relocated. -Coolant Tank-Low coolant...$464.23 -
WEHRLI WCF100113 01-19 CHEVROLET DURAMAX/03-19 DODGE CUMMINS 11.5IN AAM REAR DIFF. COVER
WEHRLI CUSTOM FABRICATION
$511.02These Fabricated Aluminum Differential Covers for AAM 11.50 Rear Axle on Dodge / RAM and GM HD Trucks from WCFab are precision laser cut, CNC Bent, and fully TIG welded aluminum assemblies designed to replace the OEM cover. Includes a 1" Fill Port (with...$511.02 -
WEHRLI WCF100363 01-16 CHEVROLET DURAMAX EXHAUST MANIFOLD KIT W/ GASKETS & HARDWARE
WEHRLI CUSTOM FABRICATION
$1,788.28WCFab’s 2001-2016 Duramax Billet Exhaust Manifolds replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components designed to enhance exhaust flow characteristics, improving turbo spool up, lowering EGTs...$1,788.28 -
WEHRLI WCF100432 2011-2019 GM 2500/3500 HD LOWER SPLASH SHIELD KIT
WEHRLI CUSTOM FABRICATION
$400.68The 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 cooling stack. Our heavy gauge aluminum splash shield...$400.68 -
WEHRLI WCF100463 2001-2010 GM 2500/3500 HD LOWER SPLASH SHIELD KIT
WEHRLI CUSTOM FABRICATION
$400.68The 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 cooling stack. Our heavy gauge aluminum splash shield...$400.68 -
WEHRLI WCF100268 20-22 CHEVROLET-GMC 6.6L L5P DURAMAX OEM PLACEMENT COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$706.132020-2025 L5P 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 coated fabricated aluminum coolant tank with sight...$706.13 -
WEHRLI WCF100325 L5P DURAMAX T4 TURBO PEDESTAL
WEHRLI CUSTOM FABRICATION
$1,115.49Heavy Duty Fabricated Turbo Pedestal allows you to mount a T4 flange style Turbo for custom build racing applications- 2" OD Stainless Steel 11 gauge tubing- Compatible with OEM or WCFAB 2" High Flow Turbo Up Pipes- Black High Temp Ceramic Coated...$1,115.49 -
WEHRLI WCF100205 01-19 CHEVROLET LB7/LLY/LBZ/LMM/LML/L5P DURAMAX BRAKE MASTER CYLINDER COVER
WEHRLI CUSTOM FABRICATION
$216.33Clean up the engine bay of your 2001-2019 Chevy Silverado or GMC Sierra 2500/3500 Duramax truck with this custom powder coated fabricated aluminum brake reservoir cover from WCFab that fits over the unsightly OEM plastic reservoir. Pair with a WCFab...$216.33 -
WEHRLI WCF100353 11-16 CHEVROLET 6.6L LML DURAMAX DRIVER SIDE 3IN INTERCOOLER PIPE
WEHRLI CUSTOM FABRICATION
$423.55The 3" High Flow Driver Side Intercooler Pipe for 2011-2016 LML Duramax replaces the factory two piece 2 ½" pipe with a high flow one piece 3" pipe. It also includes upgraded silicone boots that withstand higher pressure and temperature than the...$423.55 -
WEHRLI WCF100281 04-07 DODGE RAM CUMMINS 4IN DOWN PIPE - W/HIGH MOUNT S300 TURBO & 2ND GEN MANIFOLD
WEHRLI CUSTOM FABRICATION
$429.244" Turbo Down Pipe for Cummins with High Mount style turbo on 2nd Gen style exhaust manifold. The upper flange measures 4" diameter to mate with S300 exhaust housing. The lower flange connects to the factory exhaust system v-band flange using the OEM...$429.24 -
WEHRLI WCF100262 04-07 DODGE RAM CUMMINS 4IN DOWN PIPE - W/HIGH MOUNT S400 TURBO & 2ND GEN MANIFOLD
WEHRLI CUSTOM FABRICATION
$429.244" Turbo Down Pipe for Cummins with High Mount style turbo on 2nd Gen style exhaust manifold. The upper flange measures 4.6" diameter to mate with S400 exhaust housing. The lower flange connects to the factory exhaust system v-band flange using the OEM...$429.24 -
WEHRLI WCF100360 2017-2019 L5P DURAMAX 4" INTAKE KIT WITH AIR BOX STAGE 2
WEHRLI CUSTOM FABRICATION
$1,076.16WCFab Stage 2 Intake Kit with Air Box for 2017-2019 GM L5P 6.6L Duramax equipped Chevrolet Silverado and GMC Sierra 2500 / 3500 HD trucks. This high-flow fabricated aluminum intake pipe, intake horn, and air box enclosure with dry filter assembly...$1,076.16 -
WEHRLI WCF100434 2013-2018 6.7L CUMMINS DRIVER SIDE 3.5" INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$403.37The 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 includes upgraded high quality silicone boots that withstand...$403.37 -
WEHRLI WCF100423 2013-2018 6.7L CUMMINS STAGE 1 HIGH FLOW INTAKE BUNDLE KIT
WEHRLI CUSTOM FABRICATION
$739.77Stage 1 High Flow Bundle Kit for 2013-2018 6.7 Cummins improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete...$739.77 -
WEHRLI WCF100466 06-10 GM LBZ/LMM DURAMAX PASSENGER SIDE INTERCOOLER OUTLET ELBOW KIT
WEHRLI CUSTOM FABRICATION
$329.36The 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 flange with a double o-ring seal, comes supplied with...$329.36 -
WEHRLI WCF100720 2020-2024 L5P DURAMAX 4" INTAKE RESONATOR PIPE
WEHRLI CUSTOM FABRICATION
$322.634" 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 turbo resonator box Reduces air restriction allowing...$322.63 -
WEHRLI WCF100362 2020+ L5P DURAMAX SHORT BED FUEL FILTER HOUSING KIT
WEHRLI CUSTOM FABRICATION
$318.90Increase fuel filter capacity and time between filter changes on your 2020-2024 Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck equipped with the 6.6L L5P Duramax diesel by upgrading from a stock cartridge style filter to our spin-on canister...$318.90 -
WEHRLI WCF100361 17-19 DURAMAX L5P / 2020+ L5P DURAMAX LONG BED FUEL FILTER HOUSING KIT
WEHRLI CUSTOM FABRICATION
$318.90Increase fuel filter capacity and time between filter changes on your 2017-2019 Chevrolet Silverado or GMC Sierra (as well as 2020-2024 Long Bed trucks) equipped with the L5P Duramax 6.6L diesel engine by upgrading from a stock cartridge style filter to...$318.90 -
WEHRLI WCF100189 04.5-2010 DURAMAX LLY/LBZ/LMM CRANKCASE VENT (PCV) FITTING KIT - BILLET BLACK ANODIZED
WEHRLI CUSTOM FABRICATION
$61.90Replace 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 quality, black anodized, CNC machined billet aluminum fittings from WCFab. No tuning required. - Kit includes...$61.90 -
WEHRLI WCF100459 20+ GM 2500/3500 HD LOWER SPLASH SHIELD KIT
WEHRLI CUSTOM FABRICATION
$400.68The 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 cooling stack. Our heavy gauge aluminum splash shield...$400.68 -
WEHRLI WCF100420 06-10 DURAMAX LBZ/LMM THERMOSTAT HOUSING KIT
WEHRLI CUSTOM FABRICATION
$585.02The Top Outlet Billet Thermostat Housing and Upper Coolant Pipe Kit for 2006-2010 LBZ/LMM 6.6L Duramax replaces the OEM upper radiator hose that normally crosses over the driver side valve cover as well as the coolant return pipe. By changing the coolant...$585.02 -
WEHRLI WCF100424 2006-2010 LBZ/LMM DURAMAX TOP OUTLET BILLET THERMOSTAT HOUSING AND UPPER COOLANT PIPE KIT FOR DUAL CP3
WEHRLI CUSTOM FABRICATION
$585.02The Top Outlet Billet Thermostat Housing and Upper Coolant Pipe Kit for 2006-2010 LBZ/LMM Duramax replaces the OEM upper radiator hose that normally crosses over the driver side valve cover as well as the coolant return pipe. By changing the coolant...$585.02 -
WEHRLI WCF100867 2013-2015 6.7L CUMMINS UPPER COOLANT PIPE FOR DUAL RADIATOR
WEHRLI CUSTOM FABRICATION
$315.91Aluminum 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 prone plastic connector which is known for developing...$315.91 -
WEHRLI WCF100443 2001+ GM DURAMAX LB7/LLY/LBZ/LMM/LML/L5P BILLET OIL FILL CAP - BLACK ANODIZED
WEHRLI CUSTOM FABRICATION
$68.62Clean 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 complete cap, not a cover. Direct OEM replacement for the...$68.62 -
WEHRLI WCF100442 2001+ GM DURAMAX LB7/LLY/LBZ/LMM/LML/L5P BILLET OIL FILL CAP - CLEAR ANODIZED
WEHRLI CUSTOM FABRICATION
$68.62Clean 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 a complete cap, not a cover. Direct OEM replacement...$68.62 -
WEHRLI WCF100831 2020+ CHEVROLET DURAMAX TRACTION BAR INSTALL KIT
WEHRLI CUSTOM FABRICATION
$349.85Built 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 on the frame and axle. ***THIS IS A REPLACEMENT...$349.85 -
WEHRLI WCF100796 06-10 LBZ/LMM DURAMAX MAP SENSOR SEAL & BRACKET
WEHRLI CUSTOM FABRICATION
$21.53Map 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 intake manifold, then you will need this seal and bracket...$21.53 -
WEHRLI WCF100390 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT
WEHRLI CUSTOM FABRICATION
$335.05Clean up the look of your 2020-2025 GMC Sierra or Denali 2500 or 3500 HD truck by replacing the amber fender flare marker lights with these CAD Designed, CNC machined, billet aluminum marker light delete plates from WCFab. Available with machined WCFab...$335.05 -
WEHRLI WCF100391 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT W/O LOGO - RAW FINISH
WEHRLI CUSTOM FABRICATION
$335.05Clean up the look of your 2020-2025 GMC Sierra or Denali 2500 or 3500 HD truck by replacing the amber fender flare marker lights with these CAD Designed, CNC machined, billet aluminum marker light delete plates from WCFab. Available with machined WCFab...$335.05 -
WEHRLI WCF100392 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT W/LOGO - FINE TEXTURE BLACK
WEHRLI CUSTOM FABRICATION
$402.33High 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 Side Intercooler Pipe and Intake Horn Kit Replaces the...$402.33 -
WEHRLI WCF100393 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT W/O LOGO - FINE TEXTURE BLACK
WEHRLI CUSTOM FABRICATION
$402.33Clean up the look of your 2020-2025 GMC Sierra or Denali 2500 or 3500 HD truck by replacing the amber fender flare marker lights with these CAD Designed, CNC machined, billet aluminum marker light delete plates from WCFab. Available with machined WCFab...$402.33 -
WEHRLI WCF100472 2001+ CHEVROLET DURAMAX/13-18 6.7L DODGE CUMMINS BILLET ALUMINUM COOLANT TANK CAP - CLEAR
WEHRLI CUSTOM FABRICATION
$49.7218-20PSI 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 Coolant Tank- Clear Anodized Finish The WEHRLI WCF100472...$49.72 -
WEHRLI WCF100428-FTB 15-19 CHEVROLET 2500/3500 FRONT BUMPER VALANCE FILLER PANEL KIT W/O TOW HOOKS - TEXTURE BLACK
WEHRLI CUSTOM FABRICATION
$356.58Enhance 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, adding a rugged and aggressive look while providing...$356.58 -
WEHRLI WCF100426 2015-2019 CHEVROLET SILVERADO 2500/3500HD LOWER VALANCE FILLER PANEL WITHOUT TOW HOOK CUTOUTS
WEHRLI CUSTOM FABRICATION
$289.30Removing 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 combinations, but it leaves an unattractive, gaping void...$289.30 -
WEHRLI WCF100444 2020+ GM 2500/3500 HD BUMPER SPACER KIT - 3/4IN
WEHRLI CUSTOM FABRICATION
$254.322020-2025 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 surface area for structural integrity. Moving the...$254.32 -
WEHRLI WCF100462 15-19 GM 2500/3500 HD BUMPER SPACER KIT - 3/4IN
WEHRLI CUSTOM FABRICATION
$321.592015-2019 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 maximum mounting surface area for structural integrity...$321.59 -
WEHRLI WCF100453 15-19 GM 2500/3500 HD BUMPER SPACER KIT - 3/8IN
WEHRLI CUSTOM FABRICATION
$240.862015-2019 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 maintaining the maximum mounting surface area for structural...$240.86 -
WEHRLI WCF100446 2020+ GM 2500/3500 HD BUMPER SPACER KIT - 3/8IN
WEHRLI CUSTOM FABRICATION
$183.002020-2025 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 maximum mounting surface area for structural integrity...$183.00 -
WEHRLI WCF100427 2015-2019 CHEVROLET SILVERADO 2500/3500HD LOWER VALANCE FILLER PANEL WITH TOW HOOK CUTOUTS
WEHRLI CUSTOM FABRICATION
$356.58The 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 fill the void created by removing the OEM plastic lower...$356.58 -
WEHRLI WCF100425 15-19 CHEVROLET 2500/3500 FRONT BUMPER VALANCE FILLER PANEL KIT W/TOW HOOKS
WEHRLI CUSTOM FABRICATION
$289.30Removing 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 combinations. Still, it leaves an unattractive, gaping...$289.30 -
WEHRLI WCF100473 2017+ CHEVROLET 6.6L L5P DURAMAX INTAKE RESONATOR DELETE PLUG - BLACK ANODIZED
WEHRLI CUSTOM FABRICATION
$37.68This 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 intake. 100% warranty and emissions friendly. CNC...$37.68 -
WEHRLI WCF100469 17-19 L5P DURAMAX BILLET ANODIZED TRANSMISSION COOLER THERMOSTAT BYPASS PLUG
WEHRLI CUSTOM FABRICATION
$75.35As 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 trans cooler. In the stock application, we've seen the...$75.35 -
WEHRLI WCF100541 2020-2024 L5P DURAMAX UPPER COOLANT PIPE KIT
WEHRLI CUSTOM FABRICATION
$248.63Upper 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 powder coated in your color of choice! For use with...$248.63 -
WEHRLI WCF100381 2020-2024 L5P DURAMAX 3.5" PASSENGER (COLD) SIDE INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$512.36The WCFab 3.5" High Flow Passenger Side Intercooler Pipe for 2020-2025 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck replaces the restricted OEM rubber/plastic design with a high flow, 14 ga. aluminum one piece 3.5"...$512.36 -
WEHRLI WCF100833 2020-2024 L5P DURAMAX 3.5" TURBO INTAKE HORN
WEHRLI CUSTOM FABRICATION
$349.553.5 inch Turbo Intake Horn for the 2020-2024 L5P Duramax with factory style Turbo. Improves airflow to turbo by removing restrictions in the factory horn right before the turbo inlet. Tuning is not required; this horn will work plug and play tuners or...$349.55 -
WEHRLI WCF100517 10-18 DODGE 6.7L CUMMINS (NON 13-15 W/DUAL RADS/TWIN CP3) UPPER COOLANT PIPE
WEHRLI CUSTOM FABRICATION
$235.17Aluminum 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 colors! For use with OEM RAM radiator. Aftermarket...$235.17 -
WEHRLI WCF100365 2020-2024 L5P DURAMAX 3" DRIVER (HOT) SIDE INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$458.54The 3" High Flow Driver side Intercooler pipe for the 2020-2025 L5P Duramax. Replaces the OEM two piece design with a high flow one piece 3" pipe. It also includes upgraded silicone boots that withstand higher pressure and temperature than the factory...$458.54 -
WEHRLI WCF100216 99-22 GM 1500/2500/3500 BILLET ALUMINUM BRAKE MASTER CYLINDER CAP - BLACK ANODIZED
WEHRLI CUSTOM FABRICATION
$56.51Clean up the engine bay of your 1999-2025 Chevy Silverado or GMC Sierra 1500/2500/3500 truck with this anodized billet aluminum brake reservoir cap from WCFab. This is a complete cap not a cover. CNC machined in the USA from billet aluminum. Direct...$56.51 -
WEHRLI WCF100215 99-22 GM 1500/2500/3500 BILLET ALUMINUM BRAKE MASTER CYLINDER CAP - CLEAR ANODIZED
WEHRLI CUSTOM FABRICATION
$56.51Clean up the engine bay of your 1999-2025 Chevy Silverado or GMC Sierra 1500/2500/3500 truck with this anodized billet aluminum brake reservoir cap from WCFab. This is a complete cap not a cover. CNC machined in the USA from billet aluminum...$56.51 -
WEHRLI WCF100680 2003-2007 5.9L CUMMINS STAGE 2 HIGH FLOW INTAKE BUNDLE KIT
WEHRLI CUSTOM FABRICATION
$1,540.39High 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" Driver Side Intercooler Pipe and Intake Horn...$1,540.39 -
WEHRLI WCF100129 17-22 CHEVROLET/GMC 6.6L L5P DURAMAX 3.5IN DOWN PIPE
WEHRLI CUSTOM FABRICATION
$429.24Enhance the performance and efficiency of your 2017-2024 Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck equipped with the L5P 6.6L Duramax engine with the WEHRLI WCF100129 3.5" Down Pipe. Designed to replace the restrictive factory downpipe/front...$429.24 -
WEHRLI WCF100240 01-16 CHEVROLET 6.6L LB7/LLY/LBZ/LMM/LML DURAMAX UP PIPE BOLT KIT
WEHRLI CUSTOM FABRICATION
$47.10The 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 fasteners and matched washers with a pack of assembly lube and are designed as an upgrade to the aging OEM...$47.10 -
WEHRLI WCF100199 17-22 CHEVROLET/GMC 6.6L L5P DURAMAX UP PIPE BOLT KIT
WEHRLI CUSTOM FABRICATION
$76.70The WCFab L5P Up Pipe Bolt Kit is comprised of 12 specially selected high-strength ARP fasteners and matched washers with a pack of assembly lube are designed as an upgrade to the smaller and failure prone 8mm OEM fasteners employed on the 2017 and newer...$76.70 -
WEHRLI WCF100528 2003-2007 5.9L CUMMINS 3.5" HIGH FLOW INTAKE HORN & INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$773.412003-2007 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...$773.41 -
WEHRLI WCF100359 2003-2007 5.9L CUMMINS 3" DRIVER (COLD) SIDE REPLACEMENT INTERCOOLER PIPE
WEHRLI CUSTOM FABRICATION
$310.52Driver Side 3" Intercooler Pipe for use with OEM style Intake Horn and intercooler. Replaces leak prone plastic OEM parts with high quality mandrel bent aluminum pipe, silicone boots and stainless T-bolt clamps to eliminate boost leaks encountered with...$310.52 -
WEHRLI WCF100346 2003-2007 5.9L CUMMINS 4" INTAKE KIT
WEHRLI CUSTOM FABRICATION
$536.894" Intake Kit for 2003-2007 Dodge Ram 2500 / 3500 5.9L Cummins with Factory or OEM style Turbocharger. This high flow, fabricated aluminum intake pipe with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved...$536.89 -
WEHRLI WCF100712 2001-2004 LB7 DURAMAX STAGE 3 HIGH FLOW INTAKE BUNDLE KIT
WEHRLI CUSTOM FABRICATION
$2,590.25WCFab 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 a single package providing increased airflow for your...$2,590.25 -
WEHRLI WCF100530 17-19 CHEVROLET 6.6L L5P DURAMAX PASSENGER SIDE 3.5IN INTERCOOLER PIPE
WEHRLI CUSTOM FABRICATION
$396.95The 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 pipe with a high flow, 14 ga. aluminum one piece 3.5"...$396.95 -
WEHRLI WCF100863 2007.5-2009 6.7 CUMMINS 4" INTAKE KIT
WEHRLI CUSTOM FABRICATION
$590.712007.5-2009 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 see WCF100881 -4" Intake-Dry Air filter-Outerwear's...$590.71 -
WEHRLI WCF100860 2001-2005 LB7 / LLY DURAMAX UPPER COOLANT PIPE
WEHRLI CUSTOM FABRICATION
$181.65High 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" Driver Side Intercooler Pipe and Intake Horn...$181.65 -
WEHRLI WCF100842 FORD/DODGE/UNIVERSAL TRACTION BAR INSTALL KIT
WEHRLI CUSTOM FABRICATION
$156.09Built 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 IS A REPLACEMENT HARDWARE / INSTALL KIT,...$156.09 -
WEHRLI WCF100841 11-19 CHEVROLET 6.6L DURAMAX TRACTION BAR INSTALL KIT
WEHRLI CUSTOM FABRICATION
$349.85Built 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 on the frame and axle. ***THIS IS A REPLACEMENT...$349.85 -
WEHRLI WCF100840 01-10 CHEVROLET 6.6L DURAMAX TRACTION BAR INSTALL KIT
WEHRLI CUSTOM FABRICATION
$349.85Built 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 on the frame and axle. ***THIS IS A REPLACEMENT...$349.85 -
WEHRLI WCF100837 UNIVERSAL TRACTION BAR 60IN LONG
WEHRLI CUSTOM FABRICATION
$980.93Traction 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. These Universal Fabricator Series 60" Traction Bars...$980.93 -
WEHRLI WCF100800 UNIVERSAL T4 SPACER PLATE KIT 1IN W/STUDS & GASKETS
WEHRLI CUSTOM FABRICATION
$166.851" 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) T4 Gaskets The WEHRLI WCF100800 UNIVERSAL T4 SPACER...$166.85 -
WEHRLI WCF100742 2017-2019 L5P DURAMAX UPPER COOLANT PIPE KIT
WEHRLI CUSTOM FABRICATION
$200.49Aluminum 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 cause fitment issues. Replaces the following GM Part...$200.49 -
WEHRLI WCF100728 UNIVERSAL OUTERWEAR AIR FILTER COVER (USE W/WCF AIR FILTERS)
WEHRLI CUSTOM FABRICATION
$57.86We 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 prematurely clog air filters, compromising peak...$57.86 -
WEHRLI WCF100721 17-19 CHEVROLET 6.6L L5P DURAMAX 3.5IN INTAKE HORN W/PCV PORT
WEHRLI CUSTOM FABRICATION
$314.873 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 Max Effort Tune. Tuning is unnecessary; this horn will...$314.87 -
WEHRLI WCF100719 UNIVERSAL 5IN INLET DRY AIR FILTER (USE W/WCF KITS)
WEHRLI CUSTOM FABRICATION
$91.50Maintenance - 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 the pleats. Keeping your filter cover clean and blowing...$91.50 -
WEHRLI WCF100717 UNIVERSAL 4IN INLET DRY AIR FILTER (USE W/WCF KITS)
WEHRLI CUSTOM FABRICATION
$91.50Maintenance - 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 the pleats. Keeping your filter cover clean and blowing...$91.50 -
WEHRLI WCF100709 2017-2019 L5P DURAMAX 4" INTAKE RESONATOR PIPE
WEHRLI CUSTOM FABRICATION
$287.954" 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 engine bay and remove the plastic turbo resonator box...$287.95 -
WEHRLI WCF100708 2017-2019 L5P DURAMAX 3" DRIVER (HOT) SIDE INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$423.86WCFab 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 Mandrel Bent Aluminum Construction-Silicone Boots-T-Bolt...$423.86 -
WEHRLI WCF100705 15.5-16 CHEVROLET 6.6L LML DURAMAX 3IN STAINLESS DOWN PIPE (3 BOLT FLANGE)
WEHRLI CUSTOM FABRICATION
$469.61Replace 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 the 3 bolt flange exhaust connection. Replaces the...$469.61 -
WEHRLI WCF100704 11-15 CHEVROLET 6.6L LML DURAMAX 3IN STAINLESS DOWN PIPE (V-BAND STYLE)
WEHRLI CUSTOM FABRICATION
$348.51Replace 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 a v-band connection style exhaust, NOT the 3 bolt...$348.51 -
WEHRLI WCF100703 04.5-10 CHEVROLET 6.6L LLY/LBZ/LMM DURAMAX 3IN STAINLESS DOWN PIPE
WEHRLI CUSTOM FABRICATION
$316.21Replace 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 high flow, heat wrapped, full 3" Stainless steel down...$316.21 -
WEHRLI WCF100696 2011-2016 LML DURAMAX UPPER COOLANT PIPE
WEHRLI CUSTOM FABRICATION
$200.49Aluminum 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 cause fitment issues! Replaces the following GM Part...$200.49 -
WEHRLI WCF100693 2001-2004 LB7 DURAMAX Y-BRIDGE KIT
WEHRLI CUSTOM FABRICATION
$1,142.40The 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 Y-bridge and cold side intercooler pipe with this high flow...$1,142.40 -
WEHRLI WCF100654 01-04 CHEVROLET 6.6L DURAMAX LB7 2IN STAINLESS PASS. SIDE UP PIPE W/GASKETS (SINGLE TURBO)
WEHRLI CUSTOM FABRICATION
$429.24Replace 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 not crack and leak like OEM. Larger diameter and better...$429.24 -
WEHRLI WCF100652 01-16 CHEVROLET 6.6L DURAMAX 2IN STAINLESS DRIVER SIDE UP PIPE W/GASKETS (SINGLE/TWIN TURBO)
WEHRLI CUSTOM FABRICATION
$429.24Replace 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 and decrease EGTs. Will work with ANY Turbo setup,...$429.24 -
WEHRLI WCF100648 01-04 CHEVROLET 6.6L DURAMAX LB7 2IN STAINLESS PASSENGER SIDE UP PIPE W/GASKETS (TWIN TURBO)
WEHRLI CUSTOM FABRICATION
$429.24Replace 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 and decrease EGTs. This up pipe is built with more...$429.24 -
WEHRLI WCF100647 2011-2016 LML DURAMAX OEM PLACEMENT COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$604.17Fabricated 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 by replacing the ugly clear plastic coolant reservoir...$604.17 -
WEHRLI WCF100645 2001-2007 LB7 / LLY / LBZ DURAMAX OEM PLACEMENT COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$604.172001-2007 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 coated fabricated aluminum coolant tank with sight...$604.17 -
WEHRLI WCF100642 2001-2007 LB7/LLY/LBZ DURAMAX TWIN TURBO COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$464.23LB7, LLY, LBZ Duramax Fabricated Aluminum Coolant Tank Kit for Twin Turbo Applications mounts on passenger side fender. Does not allow use of passenger side battery in OEM location, must be relocated. -Coolant Tank-Low coolant...$464.23 -
WEHRLI WCF100628 13-18 DODGE 6.7L CUMMINS OEM PLACEMENT COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$644.532003-2007 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...$644.53 -
WEHRLI WCF100624 17-22 CHEVROLET 6.6L L5P DURAMAX 2IN STAINLESS UP PIPE KIT W/GASKETS
WEHRLI CUSTOM FABRICATION
$881.36Replace 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" Stainless up pipe kit. HD Stainless Bellows that will not...$881.36 -
WEHRLI WCF100590 01-04 CHEVROLET 6.6L DURAMAX LB7 2IN STAINLESS UP PIPE KIT W/GASKETS - SINGLE TURBO
WEHRLI CUSTOM FABRICATION
$800.62Replace 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 spool-up and decrease EGTs. This kit is for use with single...$800.62 -
WEHRLI WCF100589 01-04 CHEVROLET 6.6L DURAMAX LB7 2IN STAINLESS UP PIPE KIT W/GASKETS - TWIN TURBO
WEHRLI CUSTOM FABRICATION
$800.62High 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 Side Intercooler Pipe and Intake Horn Kit Replaces the...$800.62 -
WEHRLI WCF100570 2001-2004 LB7 DURAMAX S400/STOCK TWIN (COMPOUND) TURBO KIT
WEHRLI CUSTOM FABRICATION
$4,339.512001-2004 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 increased horsepower, better fuel mileage, and superior EGT...$4,339.51 -
WEHRLI WCF100489 2001-2004 LB7 DURAMAX S400 SINGLE TURBO INSTALL KIT
WEHRLI CUSTOM FABRICATION
$3,564.45High 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 Side Intercooler Pipe and Intake Horn Kit Replaces the...$3,564.45 -
WEHRLI WCF100486 2004.5-2007 5.9L CUMMINS S400 HIGH MOUNT 2ND GEN SWAP KIT
WEHRLI CUSTOM FABRICATION
$1,855.56This 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. We mount the manifold pointing up which allows for a...$1,855.56