Wehrli 99-23 GM Billet Coolant Heater Core Firewall Fitting
$40.74
WCFWCF100155
Coolant Reservoirs
Cooling
The factory plastic GM Coolant Heater Core Firewall Fitting is a common failure point on Duramax trucks and other GM vehicles. Our made in...
Wehrli 99-24 GM 1500/2500/3500 Billet Aluminum Brake Master Cylinder Cap - Black Anodized
$43.65
WCFWCF100216
Brake Master Cylinder
Brakes, Rotors & Pads
Clean up the engine bay of your 1999-2025 GM 1500/2500/3500 truck with this anodized billet aluminum brake reservoir cap from WCFab. This is a...
Wehrli 99-24 GM 1500/2500/3500 Billet Aluminum Brake Master Cylinder Cap - Clear Anodized
$43.65
WCFWCF100215
Brake Master Cylinder
Brakes, Rotors & Pads
Clean up the engine bay of your 1999-2025 GM 1500/2500/3500 truck with this anodized billet aluminum brake reservoir cap from WCFab. This is a...
Wehrli Cummins High Mount 2nd Gen Turbo Swap Oil Line Kit
$257.05
WCFWCF100279
Forced Induction
Turbo Upgrade Components
Cummins High Mount 2nd Gen Swap Oil Feed and Drain Line Kit, with extended oil drain fitting assembly. Teflon lined stainless steel braided #6...
Wehrli Duramax Coolant Plug
$24.25
WCFWCF100025
Coolant Bypass Kits
Cooling
Billet Aluminum Black Anodized Coolant Plug for Duramax Engine Cover, for 1.1" bore. Includes high temperature silicone O-ring seal. Billet Aluminum Black Anodized Coolant...
Wehrli Ford/Dodge/Universal Traction Bar Install Kit
$125.13
WCFWCF100842
Suspension
Suspension Arms & Components
Built in house at WCFab our traction bar brackets weld on to the bottom of the axle tube and weld to the frame on...
Wehrli GM Billet Heater Core Fitting Kit w/ Hose
$75.66
WCFWCF100699
Coolant Reservoirs
Cooling
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...
Wehrli GMC/Chevrolet LLY/LBZ/LMM Duramax 6.6L w S400 Single Turbo 3in Down Pipe - Black
$251.23
WCFWCF100811
Downpipes
Exhaust, Mufflers & Tips
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 exhaust...
Wehrli L5P Duramax T4 Turbo Pedestal
$858.45
WCFWCF100325
Forced Induction
Turbo Upgrade Components
Heavy Duty Fabricated Turbo Pedestal allows you to mount a T4 flange style Turbo for custom build racing applications Compatible with OEM or WCFAB...
Wehrli L5P Duramax Thermostat Housing - WCFab Red
$198.85
WCFWCF100188-RED
Cooling
Thermostat Housings
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 of...
Wehrli S400 Compressor Outlet O-Ring Seal
$1.93
WCFWCF203-21
Fabrication
Forced Induction
O-Rings
Turbo Install Kits
Replacement O-Ring for S400 Compressor outlet flanges. Used with the following WCFab products: LB7 Duramax S400 Single Turbo Install Kit (WCF100489), 2004.5-2007 5.9L Cummins...
Wehrli Universal 4in Inlet Dry Air Filter (Use w/WCF Kits)
$72.75
WCFWCF100717
Air Filters
Air Filters - Drop In
Maintenance - The cleaning / replacement interval depends on your driving conditions. We recommend that you inspect your air filter every 5,000 miles by...
Wehrli Universal 5in Inlet Dry Air Filter (Use w/WCF Kits)
$72.75
WCFWCF100719
Air Filters
Air Filters - Drop In
Maintenance - The cleaning / replacement interval depends on your driving conditions. We recommend that you inspect your air filter every 5,000 miles by...
Wehrli Universal Outerwear Air Filter Cover (Use w/WCF Air Filters)
$45.59
WCFWCF100728
Air Filters
Air Filters - Drop In
Water Resistant: Filter cover Hydrophobic treatment helps repel moisture and protect against water entering the engine due to puddle splash or heavy rainstorms. Although...
Wehrli Universal T4 Exhaust Housing Heat Blanket
$135.80
WCFWCF100731
Fabrication
Heat Shields
For use on all T4 Flange style exhaust housings found on S300, S400, garrett, holset, precision turbo chargers. Easy to install blanket keeps heat...
Wehrli Universal T4 Spacer Plate Kit 0.5in w/Studs & Gaskets
$86.33
WCFWCF100118
Forced Induction
Turbo Upgrade Components
1/2" Thick steel Divided T4 Spacer Plate Kit, Ceramic Coated Black. Includes M10 Mounting Studs 1" long, nuts, washers, and two T4 Gaskets 1/2"...
Wehrli Universal T4 Spacer Plate Kit 1.5in w/Studs & Gaskets
$152.29
WCFWCF100358
Forced Induction
Turbo Upgrade Components
1 1/2" Thick Steel Divided T4 Spacer Plate Kit, Ceramic Coated Black. Includes M10 Mounting Studs 2.75" long, nuts, washers, and two T4 Gaskets
Wehrli Universal T4 Spacer Plate Kit 1in w/Studs & Gaskets
$130.95
WCFWCF100800
Forced Induction
Turbo Upgrade Components
1" Thick Steel Divided T4 Spacer Plate Kit, Ceramic Coated Black. Includes M10 Mounting Studs 2.5" long, nuts, washers, and two T4 Gaskets 1"...
Wehrli Universal T6 Exhaust Housing Heat Blanket
$155.20
WCFWCF100732
Fabrication
Heat Shields
T6 Exhaust Housing Blanket for use with any S500, S400, GT50, GT55, Precision T6 exhaust housings. Easy to install blanket keeps heat inside the...
Wehrli Universal Traction Bar 60in Long - Gloss Black
$703.25
WCFWCF100837-GB
Suspension
Suspension Arms & Components
Traction bars are a necessary upgrade when increasing the horsepower on your truck to prevent the axle from twisting which can lead to broken...
Wehrli Universal Traction Bar 68in Long - Gloss Black
$703.25
WCFWCF100839-GB
Suspension
Suspension Arms & Components
Traction bars are a necessary upgrade when increasing the horsepower on your truck to prevent the axle from twisting which can lead to broken...
Wehrli WCFab Coolant Tank Billet Cap - Black Anodized
$38.80
WCFWCF100543
Cooling
Radiator Caps
18-20PSI Replacement Coolant Tank Cap, Black Anodized. Used on WCFab Fabricated Coolant Tanks on 2001+ Duramax or 2004.5-2007 & 2010-2024 6.7L Cummins. Matches WCFab...
Wehrli WCFab X Fleece 98-18 Cummins Thermostat Housing - Bengal Red
$179.45
WCFWCF100157-BR
Cooling
Thermostat Housings
WCFab X Fleece Performance Engineering Thermostat Housing for 1998-2018 5.9L & 6.7L Cummins is a direct replacement upgrade for the unsightly OEM part. This...
