Collection: DURAMAX DIESEL PERFORMANCE PARTS
Unlock the Full Potential of Your Duramax with Premium Parts
Maximize your truck’s performance, reliability, and efficiency with our high-performance aftermarket Duramax parts and accessories.
Our selection of Duramax diesel performance parts is perfect for truck drivers who regularly demand more—more power, more torque, and more...
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Fleece Performance LBZ/LMM Duramax High Pressure Injection Line (Number 1 and Number 8) FPE-FL-LBZLMM-18
Regular price $83.99 USDSale price $83.99 USD Regular priceUnit price / per -
Fleece Performance LBZ/LMM Duramax High Pressure Injection Line (Number 2 and Number 7) FPE-FL-LBZLMM-27
Regular price $83.99 USDSale price $83.99 USD Regular priceUnit price / per -
Fleece Performance LBZ/LMM Duramax High Pressure Injection Line (Number 3 and Number 6) FPE-FL-LBZLMM-36
Regular price $83.99 USDSale price $83.99 USD Regular priceUnit price / per -
Fleece Performance LBZ/LMM Duramax High Pressure Injection Line (Number 4 and Number 5) FPE-FL-LBZLMM-45
Regular price $80.00 USDSale price $80.00 USD Regular priceUnit price / per -
Fleece Performance Duramax Fan Extension Harness (L5P) FPE-HAR-DMAX-FAN-L5P
Regular price $45.99 USDSale price $45.99 USD Regular priceUnit price / per -
Fleece Performance MAP Sensor Spacer and Boost Reference Port for L5P Duramax FPE-L5P-MAP-SPR
Regular price $68.99 USDSale price $68.99 USD Regular priceUnit price / per -
Fleece Performance FPE-61-10004-P Freedom Series Duramax Cylinder Head for 2011-2016 LML (Passenger Side)
Regular price $1,098.00 USDSale price $1,098.00 USD Regular priceUnit price / per -
Fleece Performance Return Fuel Pressure Test Port for 2011-2016 LML Duramax FPE-FPTP-GM-1116
Regular price $31.49 USDSale price $31.49 USD Regular priceUnit price / per -
Fleece Performance CP3 Regulator Extension Harness for 11-16 6.6L Duramax Fleece FPE-HAR-CP3-EXT
Regular price $29.99 USDSale price $29.99 USD Regular priceUnit price / per -
Fleece Performance Fuel Pressure Regulator Wiring Harness for 2006-2010 6.6L Duramax FPE-HAR-DMAX-FPR
Regular price $73.49 USDSale price $73.49 USD Regular priceUnit price / per -
Fleece Performance Replacement Sensor Connector With Pigtail for L5P Duramax and GM Vehicles (L5P Duramax Sensor Pigtail 1) FPE-HAR-MU-PT-1
Regular price $37.99 USDSale price $37.99 USD Regular priceUnit price / per -
Fleece Performance Duramax LML Rear Engine Cover Coolant Return Plug FPE-LML-CP
Regular price $20.99 USDSale price $20.99 USD Regular priceUnit price / per -
Fleece Performance Resonator Delete Plate Duramax LML 6061 Aluminum FPE-LML-RES
Regular price $39.99 USDSale price $39.99 USD Regular priceUnit price / per -
FASS Titanium Signature Series Diesel Fuel System 100GPH GM Duramax 6.6L 2011-2014
Regular price $689.00 USDSale price $689.00 USD Regular priceUnit price / per -
FASS Titanium Signature Series Diesel Fuel System 165GPH GM Duramax 6.6L 2011-2014
Regular price $729.00 USDSale price $729.00 USD Regular priceUnit price / per -
FASS Titanium Signature Series Diesel Fuel System 100GPH GM Duramax 6.6L 2015-2016
Regular price $699.00 USDSale price $699.00 USD Regular priceUnit price / per -
FASS TSC12165G Titanium Signature Series Diesel Fuel System 165GPH GM Duramax 6.6L 2015-2016
Regular price $729.00 USDSale price $729.00 USD Regular priceUnit price / per -
FASS TSC13250F220G Titanium Signature Series Diesel Fuel System 250F 220GPH Duramax 2017-2019
Regular price $849.00 USDSale price $849.00 USD Regular priceUnit price / per -
FASS TSC13290F240G Titanium Signature Series Diesel Fuel System 290F 240GPH Duramax 2017-2019
Regular price $899.00 USDSale price $899.00 USD Regular priceUnit price / per -
FASS TSC14140F110G Titanium Signature Series Diesel Fuel System 140F 110GPH Chevy Colorado/GMC Canyon 2.8L Duramax 2016-2020
Regular price $849.00 USDSale price $849.00 USD Regular priceUnit price / per -
Titanium Signature Series Diesel Fuel System 140GPH (70-75 PSI) GM Duramax 6.6L 2020-2022 Stock-900hp FASS
Regular price $799.00 USDSale price $799.00 USD Regular priceUnit price / per -
Titanium Signature Series Diesel Fuel System 220GPH (70-75 PSI) GM Duramax 6.6L 2020-2022 900-1200hp FASS
Regular price $849.00 USDSale price $849.00 USD Regular priceUnit price / per -
Titanium Signature Series Diesel Fuel System 240GPH (70-75 PSI) GM Duramax 6.6L 2020-2022 900-1200hp FASS
Regular price $899.00 USDSale price $899.00 USD Regular priceUnit price / per -
Fleece Performance Donaldson P553203 Case of 12 Fuel Filters for Fleece L5P Duramax Fuel Filter Kits and 1998.5-2018 Dodge Ram Cummins Auxiliary Fuel Filter Kits FPE-DON-P553203-12
Regular price $279.99 USDSale price $279.99 USD Regular priceUnit price / per -
Fleece Performance FPE-LML-VNT-63-FMW-N 63mm FMW Duramax VNT Cheetah Turbocharger
Regular price $2,649.00 USDSale price $2,649.00 USD Regular priceUnit price / per -
FASS DMAX7002 Duramax Diesel Fuel System Flow Enhancer GM Duramax 6.6L 2011-2016
Regular price $407.55 USDSale price $407.55 USD Regular priceUnit price / per
Unlock the Full Potential of Your Duramax with Premium Parts
Maximize your truck’s performance, reliability, and efficiency with our high-performance aftermarket Duramax parts and accessories.
Our selection of Duramax diesel performance parts is perfect for truck drivers who regularly demand more—more power, more torque, and more efficiency. Stop letting factory settings hold you back. Upgrade your rig with high-flow exhaust systems that let the engine breathe, advanced tuners to remap your fuel strategy, and reinforced engine components that know how to handle that extra muscle.
We know your truck is more than just a vehicle; it's a powerhouse that works as hard as you do. That’s why we source only top-tier Duramax accessories that deliver serious gains you can feel with every press of the pedal. Whether you're hauling heavy loads or just want to dominate the highway, our Duramax diesel performance parts provide the raw strength and reliability you need to keep your beast roaring.























