GM DURAMAX
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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WEHRLI WCF100443 2001+ GM DURAMAX LB7/LLY/LBZ/LMM/LML/L5P BILLET OIL FILL CAP - BLACK ANODIZED
WEHRLI CUSTOM FABRICATION
$49.47Clean 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...$49.47 -
WEHRLI WCF100442 2001+ GM DURAMAX LB7/LLY/LBZ/LMM/LML/L5P BILLET OIL FILL CAP - CLEAR ANODIZED
WEHRLI CUSTOM FABRICATION
$49.47Clean 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...$49.47 -
WEHRLI WCF100831 2020+ CHEVROLET DURAMAX TRACTION BAR INSTALL KIT
WEHRLI CUSTOM FABRICATION
$252.20Built 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...$252.20 -
WEHRLI WCF100796 06-10 LBZ/LMM DURAMAX MAP SENSOR SEAL & BRACKET
WEHRLI CUSTOM FABRICATION
$15.52Map 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...$15.52 -
WEHRLI WCF100390 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT
WEHRLI CUSTOM FABRICATION
$241.53Clean 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...$241.53 -
WEHRLI WCF100391 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT W/O LOGO - RAW FINISH
WEHRLI CUSTOM FABRICATION
$241.53Clean 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...$241.53 -
WEHRLI WCF100392 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT W/LOGO - FINE TEXTURE BLACK
WEHRLI CUSTOM FABRICATION
$290.03High 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...$290.03 -
WEHRLI WCF100393 2020+ GMC 2500/3500HD FENDER FLARE MARKER LIGHT DELETE KIT W/O LOGO - FINE TEXTURE BLACK
WEHRLI CUSTOM FABRICATION
$290.03Clean 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...$290.03 -
WEHRLI WCF100472 2001+ CHEVROLET DURAMAX/13-18 6.7L DODGE CUMMINS BILLET ALUMINUM COOLANT TANK CAP - CLEAR
WEHRLI CUSTOM FABRICATION
$35.8418-20PSI 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...$35.84 -
WEHRLI WCF100428-FTB 15-19 CHEVROLET 2500/3500 FRONT BUMPER VALANCE FILLER PANEL KIT W/O TOW HOOKS - TEXTURE BLACK
WEHRLI CUSTOM FABRICATION
$257.05Enhance 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...$257.05 -
WEHRLI WCF100426 2015-2019 CHEVROLET SILVERADO 2500/3500HD LOWER VALANCE FILLER PANEL WITHOUT TOW HOOK CUTOUTS
WEHRLI CUSTOM FABRICATION
$208.55Removing 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...$208.55 -
WEHRLI WCF100444 2020+ GM 2500/3500 HD BUMPER SPACER KIT - 3/4IN
WEHRLI CUSTOM FABRICATION
$183.332020-2025 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...$183.33 -
WEHRLI WCF100462 15-19 GM 2500/3500 HD BUMPER SPACER KIT - 3/4IN
WEHRLI CUSTOM FABRICATION
$231.832015-2019 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...$231.83 -
WEHRLI WCF100453 15-19 GM 2500/3500 HD BUMPER SPACER KIT - 3/8IN
WEHRLI CUSTOM FABRICATION
$173.632015-2019 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...$173.63 -
WEHRLI WCF100446 2020+ GM 2500/3500 HD BUMPER SPACER KIT - 3/8IN
WEHRLI CUSTOM FABRICATION
$131.922020-2025 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...$131.92 -
WEHRLI WCF100427 2015-2019 CHEVROLET SILVERADO 2500/3500HD LOWER VALANCE FILLER PANEL WITH TOW HOOK CUTOUTS
WEHRLI CUSTOM FABRICATION
$257.05The 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...$257.05 -
WEHRLI WCF100425 15-19 CHEVROLET 2500/3500 FRONT BUMPER VALANCE FILLER PANEL KIT W/TOW HOOKS
WEHRLI CUSTOM FABRICATION
$208.55Removing 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...$208.55 -
WEHRLI WCF100473 2017+ CHEVROLET 6.6L L5P DURAMAX INTAKE RESONATOR DELETE PLUG - BLACK ANODIZED
WEHRLI CUSTOM FABRICATION
$27.16This 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...$27.16 -
WEHRLI WCF100469 17-19 L5P DURAMAX BILLET ANODIZED TRANSMISSION COOLER THERMOSTAT BYPASS PLUG
WEHRLI CUSTOM FABRICATION
$54.32As 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...$54.32 -
WEHRLI WCF100541 2020-2024 L5P DURAMAX UPPER COOLANT PIPE KIT
WEHRLI CUSTOM FABRICATION
$179.23Upper 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...$179.23 -
WEHRLI WCF100381 2020-2024 L5P DURAMAX 3.5" PASSENGER (COLD) SIDE INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$369.35The 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"...$369.35 -
WEHRLI WCF100833 2020-2024 L5P DURAMAX 3.5" TURBO INTAKE HORN
WEHRLI CUSTOM FABRICATION
$251.983.5 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...$251.98 -
WEHRLI WCF100365 2020-2024 L5P DURAMAX 3" DRIVER (HOT) SIDE INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$330.55The 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...$330.55 -
WEHRLI WCF100216 99-22 GM 1500/2500/3500 BILLET ALUMINUM BRAKE MASTER CYLINDER CAP - BLACK ANODIZED
WEHRLI CUSTOM FABRICATION
$40.74Clean 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...$40.74 -
WEHRLI WCF100215 99-22 GM 1500/2500/3500 BILLET ALUMINUM BRAKE MASTER CYLINDER CAP - CLEAR ANODIZED
WEHRLI CUSTOM FABRICATION
$40.74Clean 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...$40.74 -
WEHRLI WCF100129 17-22 CHEVROLET/GMC 6.6L L5P DURAMAX 3.5IN DOWN PIPE
WEHRLI CUSTOM FABRICATION
$309.43Enhance 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...$309.43 -
WEHRLI WCF100240 01-16 CHEVROLET 6.6L LB7/LLY/LBZ/LMM/LML DURAMAX UP PIPE BOLT KIT
WEHRLI CUSTOM FABRICATION
$33.95The 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...$33.95 -
WEHRLI WCF100199 17-22 CHEVROLET/GMC 6.6L L5P DURAMAX UP PIPE BOLT KIT
WEHRLI CUSTOM FABRICATION
$55.29The 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...$55.29 -
WEHRLI WCF100712 2001-2004 LB7 DURAMAX STAGE 3 HIGH FLOW INTAKE BUNDLE KIT
WEHRLI CUSTOM FABRICATION
$1,867.25WCFab 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...$1,867.25 -
WEHRLI WCF100530 17-19 CHEVROLET 6.6L L5P DURAMAX PASSENGER SIDE 3.5IN INTERCOOLER PIPE
WEHRLI CUSTOM FABRICATION
$286.15The 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"...$286.15 -
WEHRLI WCF100860 2001-2005 LB7 / LLY DURAMAX UPPER COOLANT PIPE
WEHRLI CUSTOM FABRICATION
$130.95High 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...$130.95 -
WEHRLI WCF100841 11-19 CHEVROLET 6.6L DURAMAX TRACTION BAR INSTALL KIT
WEHRLI CUSTOM FABRICATION
$252.20Built 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...$252.20 -
WEHRLI WCF100840 01-10 CHEVROLET 6.6L DURAMAX TRACTION BAR INSTALL KIT
WEHRLI CUSTOM FABRICATION
$252.20Built 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...$252.20 -
WEHRLI WCF100800 UNIVERSAL T4 SPACER PLATE KIT 1IN W/STUDS & GASKETS
WEHRLI CUSTOM FABRICATION
$120.281" 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...$120.28 -
WEHRLI WCF100742 2017-2019 L5P DURAMAX UPPER COOLANT PIPE KIT
WEHRLI CUSTOM FABRICATION
$144.53Aluminum 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...$144.53 -
WEHRLI WCF100728 UNIVERSAL OUTERWEAR AIR FILTER COVER (USE W/WCF AIR FILTERS)
WEHRLI CUSTOM FABRICATION
$41.71We 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...$41.71 -
WEHRLI WCF100721 17-19 CHEVROLET 6.6L L5P DURAMAX 3.5IN INTAKE HORN W/PCV PORT
WEHRLI CUSTOM FABRICATION
$226.983 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...$226.98 -
WEHRLI WCF100719 UNIVERSAL 5IN INLET DRY AIR FILTER (USE W/WCF KITS)
WEHRLI CUSTOM FABRICATION
$65.96Maintenance - 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...$65.96 -
WEHRLI WCF100717 UNIVERSAL 4IN INLET DRY AIR FILTER (USE W/WCF KITS)
WEHRLI CUSTOM FABRICATION
$65.96Maintenance - 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...$65.96 -
WEHRLI WCF100709 2017-2019 L5P DURAMAX 4" INTAKE RESONATOR PIPE
WEHRLI CUSTOM FABRICATION
$207.584" 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...$207.58 -
WEHRLI WCF100708 2017-2019 L5P DURAMAX 3" DRIVER (HOT) SIDE INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$305.55WCFab 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...$305.55 -
WEHRLI WCF100705 15.5-16 CHEVROLET 6.6L LML DURAMAX 3IN STAINLESS DOWN PIPE (3 BOLT FLANGE)
WEHRLI CUSTOM FABRICATION
$338.53Replace 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...$338.53 -
WEHRLI WCF100704 11-15 CHEVROLET 6.6L LML DURAMAX 3IN STAINLESS DOWN PIPE (V-BAND STYLE)
WEHRLI CUSTOM FABRICATION
$251.23Replace 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...$251.23 -
WEHRLI WCF100703 04.5-10 CHEVROLET 6.6L LLY/LBZ/LMM DURAMAX 3IN STAINLESS DOWN PIPE
WEHRLI CUSTOM FABRICATION
$227.95Replace 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...$227.95 -
WEHRLI WCF100696 2011-2016 LML DURAMAX UPPER COOLANT PIPE
WEHRLI CUSTOM FABRICATION
$144.53Aluminum 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...$144.53 -
WEHRLI WCF100693 2001-2004 LB7 DURAMAX Y-BRIDGE KIT
WEHRLI CUSTOM FABRICATION
$823.53The 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...$823.53 -
WEHRLI WCF100654 01-04 CHEVROLET 6.6L DURAMAX LB7 2IN STAINLESS PASS. SIDE UP PIPE W/GASKETS (SINGLE TURBO)
WEHRLI CUSTOM FABRICATION
$309.43Replace 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...$309.43 -
WEHRLI WCF100652 01-16 CHEVROLET 6.6L DURAMAX 2IN STAINLESS DRIVER SIDE UP PIPE W/GASKETS (SINGLE/TWIN TURBO)
WEHRLI CUSTOM FABRICATION
$309.43Replace 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,...$309.43 -
WEHRLI WCF100648 01-04 CHEVROLET 6.6L DURAMAX LB7 2IN STAINLESS PASSENGER SIDE UP PIPE W/GASKETS (TWIN TURBO)
WEHRLI CUSTOM FABRICATION
$309.43Replace 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...$309.43 -
WEHRLI WCF100647 2011-2016 LML DURAMAX OEM PLACEMENT COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$435.53Fabricated 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...$435.53 -
WEHRLI WCF100645 2001-2007 LB7 / LLY / LBZ DURAMAX OEM PLACEMENT COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$435.532001-2007 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...$435.53 -
WEHRLI WCF100642 2001-2007 LB7/LLY/LBZ DURAMAX TWIN TURBO COOLANT TANK KIT
WEHRLI CUSTOM FABRICATION
$334.65LB7, 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...$334.65 -
WEHRLI WCF100624 17-22 CHEVROLET 6.6L L5P DURAMAX 2IN STAINLESS UP PIPE KIT W/GASKETS
WEHRLI CUSTOM FABRICATION
$635.35Replace 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...$635.35 -
WEHRLI WCF100590 01-04 CHEVROLET 6.6L DURAMAX LB7 2IN STAINLESS UP PIPE KIT W/GASKETS - SINGLE TURBO
WEHRLI CUSTOM FABRICATION
$577.15Replace 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...$577.15 -
WEHRLI WCF100589 01-04 CHEVROLET 6.6L DURAMAX LB7 2IN STAINLESS UP PIPE KIT W/GASKETS - TWIN TURBO
WEHRLI CUSTOM FABRICATION
$577.15High 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...$577.15 -
WEHRLI WCF100570 2001-2004 LB7 DURAMAX S400/STOCK TWIN (COMPOUND) TURBO KIT
WEHRLI CUSTOM FABRICATION
$3,128.252001-2004 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...$3,128.25 -
WEHRLI WCF100489 2001-2004 LB7 DURAMAX S400 SINGLE TURBO INSTALL KIT
WEHRLI CUSTOM FABRICATION
$2,569.53High 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...$2,569.53 -
WEHRLI WCF100478 2001-2004 LB7 DURAMAX S300 SINGLE TURBO INSTALL KIT
WEHRLI CUSTOM FABRICATION
$2,424.03This 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 braided Parker Lines with the oil feed line routing from the...$2,424.03 -
WEHRLI WCF100358 UNIVERSAL T4 SPACER PLATE KIT 1.5IN W/STUDS & GASKETS
WEHRLI CUSTOM FABRICATION
$139.681 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 -1 1/2" T4 Spacer Plate, Ceramic Coated-M10 Studs, Nuts, & Washers-(2) T4 Gaskets Enhance the...$139.68 -
WEHRLI WCF100349 2001-2004 LB7 DURAMAX DRIVER (HOT) SIDE 3" INTERCOOLER PIPE KIT
WEHRLI CUSTOM FABRICATION
$280.331 Piece 3" Driver Side Intercooler pipe that was designed to replace the factory pipe and low-quality silicone boots. This Intercooler pipe compliments our S400 over stock twin turbo kit or LB7 Y-Bridge Kits. It is a full 3" intake tract from Turbo to...$280.33 -
WEHRLI WCF100342 01-04 CHEVROLET 6.6L LB7 DURAMAX 3.5IN INTAKE HORN
WEHRLI CUSTOM FABRICATION
$131.923 1/2" Turbo Intake Horn for 2001-2004 LB7 Duramax. Compatible with factory IHI Turbo or upgraded drop in IHI Turbos and OEM or aftermarket intakes. Great upgrade offering quicker spool up and more HP! Max-effort tuned trucks can see 10-15HP gains while...$131.92 -
WEHRLI WCF100269 FASS FUEL SYSTEM RELOCATION BRACKET FOR 11-16 CHEVROLET 6.6L DURAMAX (CREW CAB ONLY)
WEHRLI CUSTOM FABRICATION
$105.732011-2016 LML Crew Cab Duramax Fass Fuel System Relocation Mounting Bracket. Relocates the FASS fuel system to underneath the truck just before the fuel tank. **NOT COMPATIBLE on a regular cab or extended cab models** -Mount...$105.73 -
WEHRLI WCF100265 FASS FUEL SYSTEM RELOCATION BRACKET FOR 01-10 CHEVROLET 6.6L DURAMAX (CREW CAB ONLY)
WEHRLI CUSTOM FABRICATION
$96.032001-2010 LB7, LLY, LBZ, LMM Crew Cab Duramax Fass Fuel System Relocation Mounting Bracket. Relocates the FASS fuel system to underneath the truck on the inside of the driver side frame rail. **NOT COMPATIBLE on regular cab or extended cab...$96.03 -
WEHRLI WCF100121 3IN DOWN PIPE (V-BAND STYLE) FOR 11-15 CHEVROLET 6.6L LML DURAMAX
WEHRLI CUSTOM FABRICATION
$222.13Replace the restrictive crushed factory down pipe with this full 3" down pipe. For use with factory turbo or factory style drop in turbo. Replaces the following GM Part Numbers: 12643610, 12638304, 12643214 Note: 2015.5 and newer LML have a 3...$222.13 -
WEHRLI WCF100120 3IN DOWN PIPE FOR 04.5-10 CHEVROLET 6.6L LLY/LBZ/LMM DURAMAX
WEHRLI CUSTOM FABRICATION
$189.15Replace 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, high temp ceramic coated full...$189.15 -
WEHRLI WCF100119 3IN DOWN PIPE FOR 01-04 CHEVROLET 6.6L LB7 DURAMAX
WEHRLI CUSTOM FABRICATION
$231.833" LB7 Turbo Downpipe for use with OEM charger or Stealth series Drop in. High Temp Coated and Heat Wrap included. Compatible with both Standard & California Style Exhaust Flange. Replaces the following GM Part...$231.83 -
WEHRLI WCF100118 UNIVERSAL T4 SPACER PLATE KIT 0.5IN W/STUDS & GASKETS
WEHRLI CUSTOM FABRICATION
$83.421/2" Thick steel Divided T4 Spacer Plate Kit, Ceramic Coated Black. Includes M10 Mounting Studs 1" long, nuts, washers, and two T4 Gaskets -1/2" T4 Spacer Plate, Ceramic Coated-M10 Studs, Nuts, & Washers-(2) T4 Gaskets VEHICLE...$83.42 -
WEHRLI WCF100096 TURBO RESONATOR BILLET BLOCK OFF PLATE FOR 11-16 CHEVROLET 6.6L LML DURAMAX
WEHRLI CUSTOM FABRICATION
$43.65This quick and easy to install, billet aluminum plate allows you to clean up your engine bay in minutes by removing the big plastic resonator connected to the intake. 100% warranty and emissions friendly. CNC machined in the USA from 6061 aluminum. Black...$43.65 -
WEHRLI WCF100024 VALLEY CP3 BLOCK OFF PLATE FOR 01-16 CHEVROLET 6.6L DURAMAX
WEHRLI CUSTOM FABRICATION
$68.87Billet Block Off plate for valley CP3 pump. Black anodized finish with engraved logo. Enhance the performance of your 2001-2016 Chevrolet 6.6L Duramax engine with the WEHRLI WCF100024 Billet CP3 Block Off Plate. Crafted to precision, this block off...$68.87 -
WEHRLI WCF100023 FUEL PRESSURE RELIEF VALVE DELETE KIT FOR 01-04 GM DURAMAX LB7 ENGINE
WEHRLI CUSTOM FABRICATION
$69.84This kit allows you to remove the Fuel Pressure Relief Valve (FPRV) located on top of the intake runner of your LB7 6.6L Duramax. This modification allows the necessary clearance needed to run larger aftermarket y-bridges or turbo inlets which would...$69.84 -
CPP 3903035 BANJO CONNECTOR SCREW, 12MM
CPP DIESEL
$12.99Enhance the performance of your diesel fuel system with the CPP Diesel 3903035 Banjo Connector Screw, 12mm Universal. This high-quality banjo connector screw is designed to provide a reliable and secure connection for various diesel fuel systems,...$12.99 -
CPP 3924725 BANJO CONNECTOR SCREW, 14MM
CPP DIESEL
$12.99Crafted with precision and durability in mind, the CPP Diesel 3924725 Banjo Connector Screw in 14mm size is a universal solution for your automotive needs. This high-quality screw is designed to provide a reliable and tight connection in diesel engines,...$12.99 -
CPP 3066211 S400 COMPRESSOR DISCHARGE O-RING SEAL
CPP DIESEL
$4.99The CPP Diesel 3066211 S400 Compressor Discharge O-Ring Seal Universal is a versatile and high-quality product designed for optimal performance in various applications. This compressor discharge O-ring seal is specifically crafted to fit A5K, HX60, and...$4.99 -
EXERGY E06 10451 |NEW STOCK REPLACEMENT FUEL RAIL-RIGHT 2007.5-2010 GM DURAMAX 6.6L LMM
EXERGY
$460.00The Exergy E06 10451 Fuel Rail is a premium-quality, new stock replacement designed specifically for the 2007.5-2010 GM Duramax 6.6L LMM engine. Crafted by Exergy Performance, a division of Exergy Engineering specializing in high-performance diesel...$460.00 -
EXERGY E06 10450 NEW STOCK REPLACEMENT FUEL RAIL-LEFT 2007.5-2010 GM DURAMAX 6.6L LMM
EXERGY
$460.00The Exergy E06 10450 New Stock Replacement Fuel Rail-Left is specifically designed as an OEM replacement part tailored for the 2007.5-2010 GM Duramax 6.6L LMM engines. Developed by Exergy Performance, a specialized division of Exergy Engineering that...$460.00 -
EXERGY E06 10351 NEW STOCK REPLACEMENT FUEL RAIL-RIGHT 2006-2007 GM DURAMAX 6.6L LBZ
EXERGY
$460.00The Exergy E06 10351 New Stock Replacement Fuel Rail-Right for the 2006-2007 GM Duramax 6.6L LBZ is a top-quality, OEM part meticulously crafted by Exergy Performance, a renowned division of Exergy Engineering dedicated to meeting the intricate demands...$460.00 -
EXERGY E06 10350 NEW STOCK REPLACEMENT FUEL RAIL-LEFT 2006-2007 GM DURAMAX 6.6L LBZ
EXERGY
$460.00The Exergy E06 10350 New Stock Replacement Fuel Rail-Left designed for the 2006-2007 GM Duramax 6.6L LBZ engine is a product of precision engineering and performance-focused innovation. Crafted by Exergy Performance, a dedicated division of Exergy...$460.00 -
EXERGY E06 10251 NEW STOCK REPLACEMENT FUEL RAIL-RIGHT 2004.5-2005 GM DURAMAX 6.6L LLY
EXERGY
$320.00The Exergy E06 10251 New Stock Replacement Fuel Rail-Right for the 2004.5-2005 GM Duramax 6.6L LLY is a top-tier OEM component designed to meet the specific requirements of high-performance diesel engines. Crafted by Exergy Performance, a division of...$320.00 -
EXERGY E06 10250 NEW STOCK REPLACEMENT FUEL RAIL-LEFT 2004.5-2005 GM DURAMAX 6.6L LLY
EXERGY
$280.00The Exergy E06 10250 New Stock Replacement Fuel Rail-Left for the 2004.5-2005 GM Duramax 6.6L LLY is a top-notch solution designed by Exergy Performance, a trusted division of Exergy Engineering catering specifically to high-performance diesel...$280.00 -
EXERGY E04 10506 10MM STROKER CP4.2 PUMP ( SCORPION BASED) 2011-2016 GM DURAMAX 6.6L LML
EXERGY
$2,200.00The EXERGY E04 10506 10MM STROKER CP4.2 PUMP ( SCORPION BASED) 2011-2016 GM DURAMAX 6.6L LML is the ultimate solution for those seeking to push the limits of pump capacity without the hassle of multiple components. Engineered for applications demanding...$2,200.00 -
EXERGY E04 40104 IMPROVED STOCK CP4.2 PUMP (SCORPION BASED) 2011-2014 FORD POWERSTROKE 6.7L
EXERGY
$1,170.00Fuel your vehicle with confidence using the EXERGY E04 40104 Improved Stock CP4.2 Pump for 2011-2014 Ford Powerstroke 6.7L engines. Say goodbye to rail pressure loss caused by a worn-out CP4.2 pump and hello to enhanced performance with our upgraded...$1,170.00 -
EXERGY E04 10504 IMPROVED STOCK CP4.2 PUMP 2011-2016 GM DURAMAX 6.6L LML
EXERGY
$1,050.00The EXERGY E04 10504 Improved Stock CP4.2 Pump for 2011-2016 GM Duramax 6.6L LML engines is the ultimate solution for those experiencing rail pressure loss due to a worn-out CP4.2 pump. Engineered to deliver optimal performance, this factory replacement...$1,050.00 -
EXERGY E04 10409 14MM STROKER CP3 PUMP - RACE SERIES (LBZ BASED) 2007.5-2010 GM DURAMAX 6.6L LMM
EXERGY
$3,100.00The EXERGY E04 10409 14MM STROKER CP3 PUMP - RACE SERIES (LBZ BASED) for 2007.5-2010 GM DURAMAX 6.6L LMM sets the gold standard in diesel pump performance. Renowned as one of the largest pumps available, this single CP3 pump boasts the capability to...$3,100.00 -
EXERGY E04 10407 12MM STROKER CP3 PUMP (LBZ BASED) 2007.5-2010 GM DURAMAX 6.6L LMM
EXERGY
$2,550.00The EXERGY E04 10407 12MM STROKER CP3 PUMP (LBZ BASED) for 2007.5-2010 GM DURAMAX 6.6L LMM is the ultimate solution for those seeking a high-performance single pump that can effortlessly support over 1000HP while maintaining a stock-like driving...$2,550.00 -
EXERGY E04 10406 10MM STROKER CP3 PUMP (LBZ BASED) 2007.5-2010 GM DURAMAX 6.6L LMM
EXERGY
$2,000.00Delve into the world of high-performance fuel systems with the EXERGY E04 10406 10MM STROKER CP3 PUMP tailored for 2007.5-2010 GM Duramax 6.6L LMM engines. Designed for those seeking to push the boundaries of power without compromising on reliability,...$2,000.00 -
EXERGY E04 10309 14MM STROKER CP3 PUMP - RACE SERIES (LBZ BASED) 2006-2007 GM DURAMAX 6.6L LBZ
EXERGY
$3,100.00The EXERGY E04 10309 14MM STROKER CP3 PUMP - RACE SERIES (LBZ BASED) is a powerhouse fuel pump designed to exceed expectations in high-performance applications. Engineered to support up to an impressive 1200HP, and in some cases over 1350HP on fuel...$3,100.00 -
EXERGY E04 10307 12MM STROKER CP3 PUMP (LBZ BASED) 2006-2007 GM DURAMAX 6.6L LBZ
EXERGY
$2,550.00The EXERGY E04 10307 12MM STROKER CP3 PUMP (LBZ BASED) for the 2006-2007 GM Duramax 6.6L LBZ is the premier choice for those seeking exceptional power and performance without compromising on reliability. Our single stroker pump is engineered to support...$2,550.00 -
EXERGY E04 10306 10MM STROKER CP3 PUMP (LBZ BASED) 2006-2007 GM DURAMAX 6.6L LBZ
EXERGY
$2,000.00Enhance the performance of your 2006-2007 GM Duramax 6.6L LBZ engine with the EXERGY E04 10306 10MM STROKER CP3 PUMP. Designed for those seeking more pump capacity and power without the hassle of additional components, this pump is the ultimate solution...$2,000.00 -
EXERGY E04 10209 14MM STROKER CP3 PUMP - RACE SERIES (LBZ BASED) 2004.5-2005 GM DURAMAX 6.6L LLY
EXERGY
$3,100.00The EXERGY E04 10209 14MM STROKER CP3 PUMP - RACE SERIES (LBZ BASED) is a powerhouse in the realm of diesel pumps, designed to take your build to new heights of performance. Built for the 2004.5-2005 GM Duramax 6.6L LLY engines, this single CP3 pump is a...$3,100.00 -
EXERGY E04 10207 12MM STROKER CP3 PUMP (LBZ BASED) 2004.5-2005 GM DURAMAX 6.6L LLY
EXERGY
$2,550.00The EXERGY E04 10207 12MM STROKER CP3 PUMP (LBZ BASED) for 2004.5-2005 GM DURAMAX 6.6L LLY engines is the ultimate solution for those seeking unmatched performance and reliability. Built to support over 1000HP while maintaining a stock-like drive feel,...$2,550.00 -
EXERGY E04 10206 10MM STROKER CP3 PUMP (LBZ BASED) 2004.5-2005 GM DURAMAX 6.6L LLY
EXERGY
$2,000.00The EXERGY E04 10206 10MM STROKER CP3 PUMP (LBZ BASED) for 2004.5-2005 GM DURAMAX 6.6L LLY engines is the ultimate solution for those seeking increased pump capacity and power without the hassle of multiple components. Designed to support applications up...$2,000.00 -
EXERGY E04 10109 14MM STROKER CP3 PUMP - RACE SERIES (LBZ BASED) 2001-2004 GM DURAMAX 6.6L LB7
EXERGY
$3,100.00The EXERGY E04 10109 14MM STROKER CP3 PUMP - RACE SERIES (LBZ BASED) for 2001-2004 GM Duramax 6.6L LB7 engines is a powerhouse fuel pump designed for high-performance applications. This single CP3 pump is engineered to support up to 1200HP, and has been...$3,100.00 -
EXERGY E04 10107 12MM STROKER CP3 PUMP (LBZ BASED) 2001-2004 GM DURAMAX 6.6L LB7
EXERGY
$2,550.00The EXERGY E04 10107 12MM STROKER CP3 PUMP for 2001-2004 GM DURAMAX 6.6L LB7 engines is the ultimate solution for those in search of a high-performance, single CP3 pump that can handle over 1000HP while providing the smooth driving experience of a stock...$2,550.00 -
EXERGY E04 10106 10MM STROKER CP3 PUMP (LBZ BASED W/FCA) 2001-2004 GM DURAMAX 6.6L LB7
EXERGY
$2,000.00Enhance the performance of your 2001-2004 GM Duramax 6.6L LB7 engine with the EXERGY E04 10106 10MM STROKER CP3 PUMP. Designed for those seeking more pump capacity and power without the hassle of multi-pump controllers or custom belt configurations, this...$2,000.00 -
EXERGY E04 10405 SPORTSMAN CP3 PUMP (LBZ BASED) 2007.5-2010 GM DURAMAX 6.6L LMM
EXERGY
$1,170.00Exergy E04 10405 Sportsman CP3 Pump is the ultimate solution for those experiencing a loss of rail pressure due to a worn-out pump in their 2007.5-2010 GM Duramax 6.6L LMM models. Whether you need a factory replacement or a high-performance upgrade, the...$1,170.00 -
EXERGY E04 10305 SPORTSMAN CP3 PUMP (LBZ BASED) 2006-2007 GM DURAMAX 6.6L LBZ
EXERGY
$1,170.00EXERGY E04 10305 SPORTSMAN CP3 PUMP is the ultimate solution for those facing rail pressure issues due to a worn-out or malfunctioning CP3 pump in their 2006-2007 GM Duramax 6.6L LBZ engine. If your attempts with replacement parts kits have failed to...$1,170.00 -
EXERGY E04 10205 SPORTSMAN CP3 PUMP (LBZ BASED) 2004.5-2005 GM DURAMAX 6.6L LLY
EXERGY
$1,170.00The EXERGY E04 10205 SPORTSMAN CP3 PUMP (LBZ BASED) is the ultimate solution for those facing rail pressure issues or in need of a reliable factory replacement CP3 pump. Your search for an upgraded pump that requires minimal modifications ends here...$1,170.00 -
EXERGY E04 10105 SPORTSMAN CP3 PUMP (LBZ BASED W/FCA) 2001-2004 GM DURAMAX 6.6L LB7
EXERGY
$1,170.00The EXERGY E04 10105 SPORTSMAN CP3 PUMP is the ultimate solution for those experiencing a loss of rail pressure due to a worn-out CP3 pump in their 2001-2004 GM Duramax 6.6L LB7 engine. Whether you're seeking a factory replacement CP3 pump or have tried...$1,170.00 -
DYNOMITE DIESEL DDP.NLLY-ECO DURAMAX 04.5-05 LLY ECONOMY SERIES BRAND NEW INJECTOR SET
DYNOMITE DIESEL
$4,423.85The DYNOMITE DIESEL DDP.NLLY-ECO Duramax 04.5-05 LLY Economy Series Brand New Injector Set is a premium product designed for maximizing the performance of your vehicle. Crafted specifically for the 2004.5-2005 LLY Duramax engine, this injector set offers...$4,423.85 -
DYNOMITE DIESEL DDP.NLB7-ECO DURAMAX 01-04 LB7 ECONOMY SERIES BRAND NEW INJECTOR SET
DYNOMITE DIESEL
$3,702.85The DYNOMITE DIESEL DDP.NLB7-ECO DURAMAX 01-04 LB7 ECONOMY SERIES BRAND NEW INJECTOR SET is a top-of-the-line injector set designed specifically for the Duramax 01-04 LB7 engine. Featuring a brand new design in the Economy Series, these injectors offer a...$3,702.85