GM DURAMAX
The GM Duramax engine is known for its power and performance, but for true diesel enthusiasts, stock options just won't cut it. That's where our premium Duramax performance parts come in. We offer a wide selection of quality parts from trusted manufacturers to help you maximize the performance of your Duramax engine.
Whether you're in need of differential parts, cooling system components, exhaust system parts, or fuel system upgrades, we've got you covered. Our goal is to provide the best customer service possible, and we strive to ship out most orders as quickly as possible. Plus, if you find a part advertised for less elsewhere, we'll match that price.
As passionate diesel enthusiasts ourselves, we understand the importance of having access to top-quality performance parts. If you can't find a specific part or have any questions about our selection, feel free to reach out to us at sales@cppdiesel.com. We're here to help you find the parts you need to enhance your Duramax engine.
Take a look at our store to browse through our selection of Duramax performance parts, including turbochargers, air control systems, gaskets, and more. With products like the BORG WARNER S400SX TURBOCHARGER and the CPP DIESEL V-BAND CLAMP, you can trust that you're getting the best when you shop with us. Upgrade your Duramax engine today and experience the power and performance you've been dreaming of.
Whether you're in need of differential parts, cooling system components, exhaust system parts, or fuel system upgrades, we've got you covered. Our goal is to provide the best customer service possible, and we strive to ship out most orders as quickly as possible. Plus, if you find a part advertised for less elsewhere, we'll match that price.
As passionate diesel enthusiasts ourselves, we understand the importance of having access to top-quality performance parts. If you can't find a specific part or have any questions about our selection, feel free to reach out to us at sales@cppdiesel.com. We're here to help you find the parts you need to enhance your Duramax engine.
Take a look at our store to browse through our selection of Duramax performance parts, including turbochargers, air control systems, gaskets, and more. With products like the BORG WARNER S400SX TURBOCHARGER and the CPP DIESEL V-BAND CLAMP, you can trust that you're getting the best when you shop with us. Upgrade your Duramax engine today and experience the power and performance you've been dreaming of.
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AIR INTAKES
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BOOST TUBES / INTAKE MANIFOLDS
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CLUTCH RELATED
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COOLING SYSTEM
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DIFFERENTIAL / DRIVETRAIN
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ENGINE PARTS / ACCESSORIES
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EXHAUST SYSTEM / COMPONENTS
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EXTERIOR ACCESSORIES
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FABRICATION COMPONENTS
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FUEL SYSTEMS / COMPONENTS
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GAUGES / RELATED
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HEAT CONTROL PRODUCTS
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INJECTABLES
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INTERCOOLERS
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INTERIOR ACCESSORIES
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LIGHTING
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OIL FILTERS
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ON-BOARD AIR SYSTEMS
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PULLING / RACING PRODUCTS
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STEERING / SUSPENSION
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SILICONE COUPLERS
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TOWING HITCHES / RELATED
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TRANSMISSION/TRANSFER CASE
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TUNERS / CHIPS / MONITORS
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TURBO / RELATED
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TRAIN HORNS
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CPP FUEL FILTER DELETE 2001-2016 GM DURAMAX 6.6L LB7/LLY/LBZ/LMM/LML
CPP DIESEL
$106.48The CPP Duramax Fuel Filter Delete CPP163 is the ultimate solution for any 2001-2016 GM 6.6L Duramax owner seeking to enhance their fuel system performance. Engineered as a direct replacement, this fuel filter delete seamlessly fits in place of your...$106.48 -
CPP 220 AMP ALTERNATOR HIGH OUTPUT FOR 01-07 GM 2500/3500HD WITH DURAMAX ENGINE
CPP DIESEL
$415.04The CPP CPP224 220 Amp Alternator is an essential upgrade for your 2001-2007 GM 2500/3500HD equipped with a Duramax engine, especially if you're looking to enhance your vehicle's electrical performance. Designed to meet the demands of various aftermarket...$415.04 -
CPP AIR BLEEDER SCREW ALUMINUM 2001-2016 GM 6.6L DURAMAX LB7/LLY/LBZ/LMM/LML
CPP DIESEL
$13.77The CPP Aluminum Air Bleeder Screw CPP129 offers a durable and reliable solution for owners of 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML vehicles. This upgrade eliminates the need to worry about weak plastic factory screws that may round off or...$13.77 -
CPP GEAR REDUCTION STARTER FOR 01-16 GM 2500/3500HD WITH 6.6L DURAMAX ENGINE
CPP DIESEL
$415.04You can rely on the CPP HD Gear Reduction Starter CPP251 to get your 2001-2019 GM 6.6L Duramax running in the most extreme environments. CPP's HD Gear Reduction Starters are fast, strong, and durable to give you the ability to turn over even the most...$415.04 -
CPP WIF WATER IN FILTER WRENCH FOR 2001-2011 GM 6.6L DURAMAX
CPP DIESEL
$26.22The CPP CPP128 WIF Water In Filter Wrench is an essential tool for every 2001-2011 GM 6.6L Duramax owner. Designed with precision and practicality in mind, this wrench simplifies the process of removing and replacing the factory water in fuel sensor, a...$26.22 -
CPP DIRECT-FIT RADIATOR FOR 11-16 GM 2500/3500HD WITH DURAMAX ENGINE
CPP DIESEL
$726.37Don't just replace the failed radiator in your 2011-2016 GM 6.6L Duramax with a stock replacement, upgrade it with the CPP Direct-Fit Replacement Radiator CPP292. Designed for a simple bolt-on installation, CPP's Radiators look like a factory...$726.37 -
CPP DIESEL ALUMINUM REPLACEMENT RADIATOR FOR 01-05 GM 2500/3500HD WITH DURAMAX ENGINE
CPP DIESEL
$492.53The CPP-0105AL-RAD Aluminum Replacement Radiator presents a robust solution for 2001-2005 GM 2500 and 3500HD models equipped with the Duramax engine. Designed specifically for the rigorous demands of heavy-duty use, this direct-fit replacement...$492.53 -
CPP ALUMINUM RADIATOR FOR 06-10 GM 2500/3500HD WITH DURAMAX ENGINE
CPP DIESEL
$546.49The CPP CPP-0610-ALRAD Aluminum Radiator is an essential upgrade for your 2006-2010 GM 2500/3500HD equipped with a Duramax 6.6L LBZ or LMM engine. This direct-fit replacement radiator is engineered to outperform the factory component, ensuring your...$546.49 -
CPP TRANSMISSION OIL COOLER FOR 01-05 GM 2500/3500HD WITH DURAMAX ENGINE
CPP DIESEL
$284.97The CPP Direct-Fit Transmission Oil Cooler CPP309 is a direct upgrade for the factory transmission oil cooler in your 2001-2005 GM 6.6L Duramax LB7/LLY. CPP Transmission Oil Coolers are made using techniques borrowed from the HD and semi-truck...$284.97 -
CPP TRANSMISSION OIL COOLER FOR 06-10 GM 2500/3500HD WITH DURAMAX ENGINE
CPP DIESEL
$340.32Upgrade the factory transmission cooler in your 2006-2010 GM 6.6L Duramax LBZ/LMM with the CPP Direct-Fit Transmission Oil Cooler CPP310. Manufactured to provide you with the ultimate in strength and durability, CPP Transmission Oil Coolers are made...$340.32 -
CPP RADIATOR DRAIN PIPE FOR 06-19 GM 2500/3500HD WITH DURAMAX ENGINE
CPP DIESEL
$82.95Inline Radiator Hose Drain Designed for applications where the radiator does not have a drain valve Splices into the lower radiator hose allowing for easy access to drain your coolant Specifications: 1.5 inches od, 1.25 inches id, 3 inches long, 1/4...$82.95 -
CPP S400EXFL S400 5" TURBOCHARGER OUTLET FLANGE FOR T6 HOUSING
CPP DIESEL
$62.27Enhance the performance of your diesel engine with the CPP DIESEL S400EXFL S400 5" Exhaust Flange Turbocharger Outlet Universal. Designed specifically for Borg Warner S400 turbos with T-6 exhaust housings and the K31 turbocharger, this exhaust outlet...$62.27 -
WEHRLI WCF100194 2011-2016 LML DURAMAX 4" INTAKE KIT WITH AIR BOX
WEHRLI CUSTOM FABRICATION
$696.60The WEHRLI WCF100194 2011-2016 LML DURAMAX 4" INTAKE KIT WITH AIR BOX is a top-of-the-line upgrade for your 2011-2016 GM LML 6.6L Duramax diesel engine. Crafted with precision and performance in mind, this kit is designed to elevate your vehicle's...$696.60 -
WEHRLI WCF100405 01-05 CHEVROLET 6.6L LB7/LLY DURAMAX THERMOSTAT HOUSING & UPPER COOLANT PIPE KIT
WEHRLI CUSTOM FABRICATION
$616.06The WEHRLI WCF100405 Thermostat Housing and Upper Coolant Pipe Kit for 01-05 Chevrolet 6.6L LB7/LLY Duramax engines is a high-performance upgrade that revolutionizes coolant routing for enhanced engine access and customization options.Crafted from CNC...$616.06 -
WEHRLI WCF100190 2001-2004 LB7 DURAMAX 4" INTAKE KIT WITH AIR BOX
WEHRLI CUSTOM FABRICATION
$669.75The WEHRLI WCF100190 2001-2004 LB7 DURAMAX 4" INTAKE KIT WITH AIR BOX from WCFab is the ultimate upgrade for your GM LB7 6.6L Duramax diesel engine. This meticulously designed intake kit and air box are crafted from high-quality aluminum, offering...$669.75 -
WEHRLI WCF100303 2007.5-2010 LMM DURAMAX 4" INTAKE KIT WITH AIR BOX STAGE 2
WEHRLI CUSTOM FABRICATION
$1,018.72The WEHRLI WCF100303 2007.5-2010 LMM DURAMAX 4" INTAKE KIT WITH AIR BOX STAGE 2 from WCFab is a top-of-the-line, high-performance upgrade for your 2007.5-2010 GM LMM 6.6L Duramax diesel engine. This stage 2 intake kit is engineered to optimize your...$1,018.72 -
WEHRLI WCF100193 2007.5-2010 LMM DURAMAX 4" INTAKE KIT WITH AIR BOX
WEHRLI CUSTOM FABRICATION
$669.75Elevate your diesel engine's performance with the WEHRLI WCF100193 2007.5-2010 LMM DURAMAX 4" INTAKE KIT WITH AIR BOX by WCFab. This top-tier intake solution is specially designed for the 2007.5-2010 GM LMM 6.6L Duramax engines, delivering a significant...$669.75 -
WEHRLI WCF100192 2006-2007 LBZ DURAMAX 4" INTAKE KIT WITH AIR BOX
WEHRLI CUSTOM FABRICATION
$669.75WCFab 2006-2007 GM LBZ 6.6L Duramax 4" Intake Kit with Air Box. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved engine performance...$669.75 -
WEHRLI WCF100164 2007.5-2010 LMM DURAMAX HIGH FLOW 3" Y-BRIDGE KIT
WEHRLI CUSTOM FABRICATION
$1,302.96This LMM 3" Y-Bridge Kit is an upgraded high flow intake kit for the 2007.5-2010 LMM 6.6L Duramax which replaces the OEM upper intake manifold supplying air to the engine intake runners. The OEM Y-bridge for these trucks is a poorly designed, slip-fit...$1,302.96 -
WEHRLI WCF100702 | 2020-2024 L5P DURAMAX 4" INTAKE KIT WITH AIR BOX
WEHRLI CUSTOM FABRICATION
$838.56WCFab'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 Chevrolet Silverado and GMC Sierra 2500 / 3500 HD trucks for...$838.56 -
WEHRLI WCF100718 | 2017-2019 L5P DURAMAX STAGE 1 HIGH FLOW INTAKE BUNDLE KIT
WEHRLI CUSTOM FABRICATION
$819.77Stage 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 design that can lead to boost leaks or complete failures in...$819.77 -
WEHRLI WCF100684 2020-2024 L5P DURAMAX 4" INTAKE KIT WITH AIR BOX STAGE 2
WEHRLI CUSTOM FABRICATION
$1,101.63High 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 / GMC Sierra 2500 / 3500 HD trucks for improved engine...$1,101.63 -
WEHRLI WCF100433 17-19 CHEVROLET 6.6L L5P DURAMAX OEM PLACEMENT COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$664.08The 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 trucks are known to become cloudy and yellow with age...$664.08 -
WEHRLI WCF100328 2011-2016 LML DURAMAX PASSENGER SIDE UPPER CROSSOVER INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$630.52The 3" High Flow Passenger Side Upper Crossover Intercooler Pipe for 2011-2016 LML Duramax provides a 20% increase in size over the OEM part allowing for less restriction in airflow and an increase in efficiency and turbo spool up. Eliminates resonator...$630.52 -
WEHRLI WCF100301 2004.5-2005 LLY DURAMAX 4" INTAKE KIT WITH AIR BOX STAGE 2
WEHRLI CUSTOM FABRICATION
$1,053.31WCFab 2004.5-2005 GM LLY 6.6L Duramax Stage 2 Intake Kit with Air Box. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved engine...$1,053.31 -
WEHRLI WCF100300 2001-2004 LB7 DURAMAX 4" INTAKE KIT WITH AIR BOX STAGE 2
WEHRLI CUSTOM FABRICATION
$825.14WCFab 2001-2004 GM LB7 6.6L Duramax 4" Stage 2 Intake Kit with Air Box. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved engine...$825.14 -
WEHRLI WCF100163 2006-2007 LBZ DURAMAX HIGH FLOW 3" Y-BRIDGE KIT
WEHRLI CUSTOM FABRICATION
$1,302.96This LBZ 3" Y-Bridge Kit is an upgraded high flow intake kit for the 2006-2007 6.6L Duramax diesel engine which replaces the OEM upper intake manifold supplying air to the engine intake runners. The OEM Y-bridge for these trucks is a poorly designed,...$1,302.96 -
WEHRLI WCF100544 03-07 DODGE 5.9L CUMMINS PASSENGER SIDE 3IN REPLACEMENT INTERCOOLER PIPE
WEHRLI CUSTOM FABRICATION
$348.66Passenger Side 3" Intercooler pipe for use with OEM style Holset turbo and intercooler. Includes high quality silicone boots and stainless T-bolt clamps to eliminate boost leaks commonly encountered with OEM components when increasing boost pressures...$348.66 -
WEHRLI WCF100379 OIL LINE KIT S400 TWIN/COMP TURBO LML DURAMAX
WEHRLI CUSTOM FABRICATION
$240.25Oil line kit For S400 Turbo in a Twin or Remote Mount Application Stainless braided drain and feed Lines, Fittings for turbo, oil pan and engine block. Enhance the performance and reliability of your LML Duramax engine with the WEHRLI WCF100379...$240.25 -
WEHRLI WCF100421 11-16 DURAMAX BATTERY TRAY RELOCATION KIT
WEHRLI CUSTOM FABRICATION
$119.45This bracket allows the passenger side battery on 2011-2016 Chevrolet Silverado and GMC Sierra LML Duramax diesel trucks to be relocated forward into the OEM air box location behind the headlight in order to make room for custom twin (compound) turbo...$119.45 -
WEHRLI WCF100367 2006-2010 LBZ/LMM DURAMAX 3.5" PASSENGER (COLD) SIDE INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$522.11Enhance the performance of your 2006-2010 LBZ/LMM Duramax with the WEHRLI WCF100367 3.5" Passenger (Cold) Side Intercooler Pipe Kit. Crafted to perfection, this kit features a high-flow 3.5" aluminum pipe that replaces the factory plastic component prone...$522.11 -
WEHRLI WCF100302 2006-2007 LBZ DURAMAX 4" INTAKE KIT WITH AIR BOX STAGE 2
WEHRLI CUSTOM FABRICATION
$1,053.31WCFab 2006-2007 GM LBZ 6.6L Duramax Stage 2 Intake Kit with Air Box. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved engine...$1,053.31 -
WEHRLI WCF100410 20-22 DURAMAX L5P HIGH FLOW INTAKE BUNDLE KIT
WEHRLI CUSTOM FABRICATION
$900.30Stage 1 upgrade for the 2020-2025 L5P 6.6L Duramax Diesel Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool-up. Eliminates weak points in the...$900.30 -
WEHRLI WCF100235 LBZ/LMM DURAMAX HIGH FLOW 3" Y-BRIDGE (BRIDGE ASSEMBLY ONLY)
WEHRLI CUSTOM FABRICATION
$766.09***BRIDGE ASSEMBLY ONLY*** 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 boost and creating poor drivability and performance. This kit is a much improved,...$766.09 -
WEHRLI WCF100411 2001-2004 LB7 DURAMAX STAGE 1 HIGH FLOW INTAKE BUNDLE KIT
WEHRLI CUSTOM FABRICATION
$1,496.24Already have an air intake and turbo down pipe that you're happy with, but looking to improve your LB7's performance and efficiency by addressing weak points in the OEM components between the turbo and engine? Check out the WCFab Stage 1 High Flow...$1,496.24 -
WEHRLI WCF100355 2004.5-2005 LLY DURAMAX 3" PASSENGER (COLD) SIDE INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$409.06The 3" High Flow Passenger Side Intercooler Pipe for 2004.5-2005 LLY Duramax replaces the 2.5" factory aluminum pipe with a high flow, mandrel bent, 14 ga. aluminum one piece 3" pipe. This part uses upgraded silicone boots in order to withstand higher...$409.06 -
WEHRLI WCF100344 2017-2019 L5P DURAMAX 4" INTAKE KIT WITH AIR BOX
WEHRLI CUSTOM FABRICATION
$770.42WCFab 4" 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 and air box enclosure with dry filter assembly replaces the restrictive...$770.42 -
WEHRLI WCF100676 LML DURAMAX TWIN TURBO PEDESTAL
WEHRLI CUSTOM FABRICATION
$362.39Twin 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. The WEHRLI WCF100676 LML Duramax...$362.39 -
WEHRLI WCF100682 11-16 DURAMAX LML PASSENGER SIDE 3.5 IN. INTERCOOLER PIPE
WEHRLI CUSTOM FABRICATION
$462.75The 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 upgraded silicone boots to withstand higher boost...$462.75 -
WEHRLI WCF100276 17-21 CHEVROLET L5P DURAMAX RELOCATION MOUNT FASS LIFT PUMP
WEHRLI CUSTOM FABRICATION
$79.192017-2023 L5P Duramax Fass Fuel System Relocation Mounting Bracket. Relocates the FASS fuel system to underneath the truck just in front of the fuel tank. -Mount Bracket-Zinc primer & Semi gloss black powder coat finish The WEHRLI WCF100276...$79.19 -
WEHRLI WCF100291 15-19 GMC SIERRA 6.6L LML/L5P DURAMAX BUMPER GRILLE
WEHRLI CUSTOM FABRICATION
$194.62The WEHRLI WCF100291 Bumper Grille is a must-have accessory for 2015-2019 LML/L5P GMC Sierra HD owners looking to enhance both the protection and style of their trucks. Crafted from heavy gauge stainless steel, this grille is built to last and provide...$194.62 -
WEHRLI WCF100290 2015-2019 CHEVROLET SILVERADO 2500/3500 HD BUMPER GRILLE
WEHRLI CUSTOM FABRICATION
$202.372015-2019 LML/L5P 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...$202.37 -
WEHRLI WCF100441 2017-2019 L5P DURAMAX STAGE 2 HIGH FLOW INTAKE BUNDLE KIT
WEHRLI CUSTOM FABRICATION
$1,858.63The 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 providing increased airflow for your turbo and engine...$1,858.63 -
WEHRLI WCF100412 2006-2010 LBZ/LMM DURAMAX HIGH FLOW TURBO INTAKE HORN
WEHRLI CUSTOM FABRICATION
$529.86The WCFab LBZ/LMM 4.8 in. High Flow Cast Aluminum intake horn for LBZ/LMM replaces the restrictive OEM plastic inlet to provide increased airflow to your turbo for improved performance and throttle response. Includes port for PCV connection. Eliminates...$529.86 -
WEHRLI WCF100402 6.6L LML DURAMAX HIGH PRESSURE LINE CP3 CONVERSION KIT
WEHRLI CUSTOM FABRICATION
$522.11Longer 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...$522.11 -
WEHRLI WCF100414 2020-2024 L5P DURAMAX STAGE 2 HIGH FLOW INTAKE BUNDLE KIT
WEHRLI CUSTOM FABRICATION
$1,966.00The 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...$1,966.00 -
WEHRLI WCF100404 11-14 GM 2500/3500 HD BUMPER SPACER KIT - 3/4IN
WEHRLI CUSTOM FABRICATION
$267.102011-2014 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...$267.10 -
WEHRLI WCF100285 11-14 CHEVROLET SILVERADO 2500/3500 HD / DURAMAX LML BUMPER GRILLE
WEHRLI CUSTOM FABRICATION
$229.212011-2014 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...$229.21 -
WEHRLI WCF100373 17-22 L5P DURAMAX BILLET EXHAUST MANIFOLD KIT W/ GASKETS AND ARP HARDWARE
WEHRLI CUSTOM FABRICATION
$2,006.57WCFab’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...$2,006.57 -
WEHRLI WCF100699 GM BILLET HEATER CORE FITTING KIT W/ HOSE
WEHRLI CUSTOM FABRICATION
$96.64High 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...$96.64 -
WEHRLI WCF100114 2020-2024 GM 2500/3500HD & 2019-2023 RAM 2500/3500 REAR DIFFERENTIAL COVER
WEHRLI CUSTOM FABRICATION
$509.73Fabricated 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...$509.73 -
WEHRLI WCF100352 | 2004.5-2010 LLY/LBZ/LMM DURAMAX DRIVER (HOT) SIDE 3" INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$422.49LLY, 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...$422.49 -
WEHRLI WCF100644 11-16 CHEVROLET 6.6L LML DURAMAX TWIN TURBO STYLE COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$463.06LML 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...$463.06 -
WEHRLI WCF100113 01-19 CHEVROLET DURAMAX/03-19 DODGE CUMMINS 11.5IN AAM REAR DIFF. COVER
WEHRLI CUSTOM FABRICATION
$509.73These 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...$509.73 -
WEHRLI WCF100363 01-16 CHEVROLET DURAMAX EXHAUST MANIFOLD KIT W/ GASKETS & HARDWARE
WEHRLI CUSTOM FABRICATION
$1,783.77WCFab’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...$1,783.77 -
WEHRLI WCF100432 2011-2019 GM 2500/3500 HD LOWER SPLASH SHIELD KIT
WEHRLI CUSTOM FABRICATION
$399.67The 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...$399.67 -
WEHRLI WCF100463 2001-2010 GM 2500/3500 HD LOWER SPLASH SHIELD KIT
WEHRLI CUSTOM FABRICATION
$399.67The 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...$399.67 -
WEHRLI WCF100268 20-22 CHEVROLET-GMC 6.6L L5P DURAMAX OEM PLACEMENT COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$704.342020-2025 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...$704.34 -
WEHRLI WCF100325 L5P DURAMAX T4 TURBO PEDESTAL
WEHRLI CUSTOM FABRICATION
$1,112.67Heavy 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...$1,112.67 -
WEHRLI WCF100205 01-19 CHEVROLET LB7/LLY/LBZ/LMM/LML/L5P DURAMAX BRAKE MASTER CYLINDER COVER
WEHRLI CUSTOM FABRICATION
$215.79Clean 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...$215.79 -
WEHRLI WCF100353 11-16 CHEVROLET 6.6L LML DURAMAX DRIVER SIDE 3IN INTERCOOLER PIPE
WEHRLI CUSTOM FABRICATION
$422.49The 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...$422.49 -
WEHRLI WCF100360 2017-2019 L5P DURAMAX 4" INTAKE KIT WITH AIR BOX STAGE 2
WEHRLI CUSTOM FABRICATION
$1,073.45WCFab 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...$1,073.45 -
WEHRLI WCF100466 06-10 GM LBZ/LMM DURAMAX PASSENGER SIDE INTERCOOLER OUTLET ELBOW KIT
WEHRLI CUSTOM FABRICATION
$328.53The 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...$328.53 -
WEHRLI WCF100720 2020-2024 L5P DURAMAX 4" INTAKE RESONATOR PIPE
WEHRLI CUSTOM FABRICATION
$321.824" 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...$321.82 -
WEHRLI WCF100362 2020+ L5P DURAMAX SHORT BED FUEL FILTER HOUSING KIT
WEHRLI CUSTOM FABRICATION
$318.10Increase 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...$318.10 -
WEHRLI WCF100361 17-19 DURAMAX L5P / 2020+ L5P DURAMAX LONG BED FUEL FILTER HOUSING KIT
WEHRLI CUSTOM FABRICATION
$318.10Increase 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...$318.10 -
WEHRLI WCF100189 04.5-2010 DURAMAX LLY/LBZ/LMM CRANKCASE VENT (PCV) FITTING KIT - BILLET BLACK ANODIZED
WEHRLI CUSTOM FABRICATION
$61.74Replace 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...$61.74 -
WEHRLI WCF100459 20+ GM 2500/3500 HD LOWER SPLASH SHIELD KIT
WEHRLI CUSTOM FABRICATION
$399.67The 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...$399.67 -
WEHRLI WCF100420 06-10 DURAMAX LBZ/LMM THERMOSTAT HOUSING KIT
WEHRLI CUSTOM FABRICATION
$583.55The 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...$583.55 -
WEHRLI WCF100424 2006-2010 LBZ/LMM DURAMAX TOP OUTLET BILLET THERMOSTAT HOUSING AND UPPER COOLANT PIPE KIT FOR DUAL CP3
WEHRLI CUSTOM FABRICATION
$583.55The 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...$583.55 -
WEHRLI WCF100443 2001+ GM DURAMAX LB7/LLY/LBZ/LMM/LML/L5P BILLET OIL FILL CAP - BLACK ANODIZED
WEHRLI CUSTOM FABRICATION
$68.45Clean 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...$68.45 -
WEHRLI WCF100442 2001+ GM DURAMAX LB7/LLY/LBZ/LMM/LML/L5P BILLET OIL FILL CAP - CLEAR ANODIZED
WEHRLI CUSTOM FABRICATION
$68.45Clean 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...$68.45 -
WEHRLI WCF100831 2020+ CHEVROLET DURAMAX TRACTION BAR INSTALL KIT
WEHRLI CUSTOM FABRICATION
$348.97Built 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...$348.97 -
WEHRLI WCF100796 06-10 LBZ/LMM DURAMAX MAP SENSOR SEAL & BRACKET
WEHRLI CUSTOM FABRICATION
$21.48Map 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...$21.48 -
WEHRLI WCF100390 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT
WEHRLI CUSTOM FABRICATION
$334.21Clean 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...$334.21 -
WEHRLI WCF100391 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT W/O LOGO - RAW FINISH
WEHRLI CUSTOM FABRICATION
$334.21Clean 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...$334.21 -
WEHRLI WCF100392 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT W/LOGO - FINE TEXTURE BLACK
WEHRLI CUSTOM FABRICATION
$401.31High 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...$401.31 -
WEHRLI WCF100393 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT W/O LOGO - FINE TEXTURE BLACK
WEHRLI CUSTOM FABRICATION
$401.31Clean 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...$401.31 -
WEHRLI WCF100472 2001+ CHEVROLET DURAMAX/13-18 6.7L DODGE CUMMINS BILLET ALUMINUM COOLANT TANK CAP - CLEAR
WEHRLI CUSTOM FABRICATION
$49.5918-20PSI 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...$49.59 -
WEHRLI WCF100428-FTB 15-19 CHEVROLET 2500/3500 FRONT BUMPER VALANCE FILLER PANEL KIT W/O TOW HOOKS - TEXTURE BLACK
WEHRLI CUSTOM FABRICATION
$355.68Enhance 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...$355.68 -
WEHRLI WCF100426 2015-2019 CHEVROLET SILVERADO 2500/3500HD LOWER VALANCE FILLER PANEL WITHOUT TOW HOOK CUTOUTS
WEHRLI CUSTOM FABRICATION
$288.57Removing 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...$288.57 -
WEHRLI WCF100444 2020+ GM 2500/3500 HD BUMPER SPACER KIT - 3/4IN
WEHRLI CUSTOM FABRICATION
$253.672020-2025 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...$253.67 -
WEHRLI WCF100462 15-19 GM 2500/3500 HD BUMPER SPACER KIT - 3/4IN
WEHRLI CUSTOM FABRICATION
$320.782015-2019 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...$320.78 -
WEHRLI WCF100453 15-19 GM 2500/3500 HD BUMPER SPACER KIT - 3/8IN
WEHRLI CUSTOM FABRICATION
$240.252015-2019 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...$240.25 -
WEHRLI WCF100446 2020+ GM 2500/3500 HD BUMPER SPACER KIT - 3/8IN
WEHRLI CUSTOM FABRICATION
$182.542020-2025 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...$182.54 -
WEHRLI WCF100427 2015-2019 CHEVROLET SILVERADO 2500/3500HD LOWER VALANCE FILLER PANEL WITH TOW HOOK CUTOUTS
WEHRLI CUSTOM FABRICATION
$355.68The 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...$355.68 -
WEHRLI WCF100425 15-19 CHEVROLET 2500/3500 FRONT BUMPER VALANCE FILLER PANEL KIT W/TOW HOOKS
WEHRLI CUSTOM FABRICATION
$288.57Removing 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...$288.57 -
WEHRLI WCF100473 2017+ CHEVROLET 6.6L L5P DURAMAX INTAKE RESONATOR DELETE PLUG - BLACK ANODIZED
WEHRLI CUSTOM FABRICATION
$37.58This 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...$37.58 -
WEHRLI WCF100469 17-19 L5P DURAMAX BILLET ANODIZED TRANSMISSION COOLER THERMOSTAT BYPASS PLUG
WEHRLI CUSTOM FABRICATION
$75.16As 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...$75.16 -
WEHRLI WCF100541 2020-2024 L5P DURAMAX UPPER COOLANT PIPE KIT
WEHRLI CUSTOM FABRICATION
$248.00Upper 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...$248.00 -
WEHRLI WCF100381 2020-2024 L5P DURAMAX 3.5" PASSENGER (COLD) SIDE INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$511.07The 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"...$511.07 -
WEHRLI WCF100833 2020-2024 L5P DURAMAX 3.5" TURBO INTAKE HORN
WEHRLI CUSTOM FABRICATION
$348.663.5 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...$348.66 -
WEHRLI WCF100365 2020-2024 L5P DURAMAX 3" DRIVER (HOT) SIDE INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$457.38The 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...$457.38 -
WEHRLI WCF100216 99-22 GM 1500/2500/3500 BILLET ALUMINUM BRAKE MASTER CYLINDER CAP - BLACK ANODIZED
WEHRLI CUSTOM FABRICATION
$56.37Clean 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...$56.37 -
WEHRLI WCF100215 99-22 GM 1500/2500/3500 BILLET ALUMINUM BRAKE MASTER CYLINDER CAP - CLEAR ANODIZED
WEHRLI CUSTOM FABRICATION
$56.37Clean 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...$56.37 -
WEHRLI WCF100129 17-22 CHEVROLET/GMC 6.6L L5P DURAMAX 3.5IN DOWN PIPE
WEHRLI CUSTOM FABRICATION
$428.16Enhance 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...$428.16 -
WEHRLI WCF100240 01-16 CHEVROLET 6.6L LB7/LLY/LBZ/LMM/LML DURAMAX UP PIPE BOLT KIT
WEHRLI CUSTOM FABRICATION
$46.98The 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...$46.98 -
WEHRLI WCF100199 17-22 CHEVROLET/GMC 6.6L L5P DURAMAX UP PIPE BOLT KIT
WEHRLI CUSTOM FABRICATION
$76.50The 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...$76.50 -
WEHRLI WCF100712 2001-2004 LB7 DURAMAX STAGE 3 HIGH FLOW INTAKE BUNDLE KIT
WEHRLI CUSTOM FABRICATION
$2,583.71WCFab 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...$2,583.71 -
WEHRLI WCF100530 17-19 CHEVROLET 6.6L L5P DURAMAX PASSENGER SIDE 3.5IN INTERCOOLER PIPE
WEHRLI CUSTOM FABRICATION
$395.95The 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"...$395.95