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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ATS Allison Stage 7 Rebuild Kit Fits 2001-Early 2004 6.6L Duramax
Regular price $4,654.99 USDSale price $4,654.99 USD Regular priceUnit price / per -
ATS Fuel Rail Pressure Plug Fits 2001-2004 6.6L Duramax
Regular price $34.99 USDSale price $34.99 USD Regular priceUnit price / per -
Siverado/Sierra 2500/3500 06-10 6.6L Heavy Duty Main Stud Kit Gator Fasteners
Regular price $279.99 USDSale price $279.99 USD Regular priceUnit price / per$350.00 USDSale -
Heavy Duty Main Stud Kit for Chevy/GMC 1982-97 6.2L & 6.5L Diesel Gator Fasteners
Regular price $344.99 USDSale price $344.99 USD Regular priceUnit price / per$432.00 USDSale -
Siverado/Sierra 2500/3500 01-10 6.6L Heavy Duty Rod Bolt Kit Gator Fasteners
Regular price $209.99 USDSale price $209.99 USD Regular priceUnit price / per$263.00 USDSale -
Siverado/Sierra 2500/3500 2004-20 4.8L/5.3L/5.7L/6.0L/6.2L/7.0L LS Heavy Duty Head Stud Kit Gator Fasteners
Regular price $349.99 USDSale price $349.99 USD Regular priceUnit price / per$438.00 USDSale -
Siverado/Sierra 2500/3500 2001-16 6.6L Heavy Duty Head Stud Kit Gator Fasteners
Regular price $549.99 USDSale price $549.99 USD Regular priceUnit price / per$688.00 USDSale -
Siverado/Sierra 2500 1982-00 6.2L & 6.5L Heavy Duty Head Stud Kit Gator Fasteners
Regular price $349.99 USDSale price $349.99 USD Regular priceUnit price / per$438.00 USDSale -
ATS Stage 2 Allison LCT1000 Transmission Package 2WD 2004.5-2005 6.6L LLY Duramax
Regular price $6,994.99 USDSale price $6,994.99 USD Regular priceUnit price / per -
ATS TCM Upgrade, A40 to T87, 2WD, 2009-2010 GM 6.6L Duramax ATS Diesel Performance
Regular price $1,994.99 USDSale price $1,994.99 USD Regular priceUnit price / per -
ATS Allison Performance Valve Body Fits 2001-2002 6.6L Duramax
Regular price $879.99 USDSale price $879.99 USD Regular priceUnit price / per -
ATS Allison Billet Flexplate Fits 2001-2005 6.6L Duramax
Regular price $804.99 USDSale price $804.99 USD Regular priceUnit price / per -
ATS Stage 3 Allison LCT1000 Transmission Package 2WD 2003- Early 2004 6.6L LB7 Duramax
Regular price $7,809.99 USDSale price $7,809.99 USD Regular priceUnit price / per -
ATS Stage 3 Allison LCT1000 Transmission Package 2WD w/ PTO 2003- Early 2004 6.6L LB7 Duramax
Regular price $7,809.99 USDSale price $7,809.99 USD Regular priceUnit price / per -
ATS Stage 1 Allison LCT1000 Transmission Package 4WD 2001-2002 6.6L LB7 Duramax
Regular price $5,794.99 USDSale price $5,794.99 USD Regular priceUnit price / per -
ATS Aurora 3000 Vfr Turbo Fits 2004-2010 6.6L Duramax
Regular price $2,304.99 USDSale price $2,304.99 USD Regular priceUnit price / per -
ATS Stage 5 Allison LCT1000 Transmission Package 2WD w/ PTO 2006-2007 6.6L LLY / LBZ / LMM Duramax
Regular price $10,514.99 USDSale price $10,514.99 USD Regular priceUnit price / per -
ATS Stage 2 Allison LCT1000 Transmission Package 4WD w/ PTO 2006-2007 6.6L LLY / LBZ / LMM Duramax
Regular price $6,994.99 USDSale price $6,994.99 USD Regular priceUnit price / per -
ATS Stage 5 Allison LCT1000 Transmission Package 4WD w/ PTO 2011-2016 6.6L LML Duramax
Regular price $9,084.99 USDSale price $9,084.99 USD Regular priceUnit price / per -
ATS Allison Stage 6 Rebuild Kit Fits 2001-Early 2004 6.6L Duramax
Regular price $3,564.99 USDSale price $3,564.99 USD Regular priceUnit price / per -
ATS Stage 3 Allison LCT1000 Transmission Package 4WD w/ PTO 2011-2016 6.6L LML Duramax
Regular price $7,809.99 USDSale price $7,809.99 USD Regular priceUnit price / per -
ATS Allison C5 Clutch Pack Fits 2001-2010 6.6L Duramax
Regular price $314.99 USDSale price $314.99 USD Regular priceUnit price / per -
ATS Allison Stage 5 Rebuild Kit Fits 2011-2019 6.6L Duramax
Regular price $3,234.99 USDSale price $3,234.99 USD Regular priceUnit price / per -
ATS Allison C4 Clutch Pack Fits 2001-2010 6.6L Duramax
Regular price $179.99 USDSale price $179.99 USD Regular priceUnit price / per -
ATS Stage 1 Allison LCT1000 Transmission Package 2WD 2007.5-2010 6.6L LMM Duramax
Regular price $5,794.99 USDSale price $5,794.99 USD Regular priceUnit price / per -
ATS Stage 5 Allison LCT1000 Transmission Package 4WD w/ PTO 2006-2007 6.6L LLY / LBZ / LMM Duramax
Regular price $9,084.99 USDSale price $9,084.99 USD Regular priceUnit price / per -
ATS Stage 4 Allison LCT1000 Transmission Package 4WD 2006-2007 6.6L LLY / LBZ / LMM Duramax
Regular price $8,579.99 USDSale price $8,579.99 USD Regular priceUnit price / per -
ATS Allison Pressure Regulator Valve Fits 2001-2004 6.6L Duramax
Regular price $104.99 USDSale price $104.99 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.





















