Collection: 2001-2004 6.6L LB7 DURAMAX
Unleash LB7 Duramax with Performance Upgrades from Tameless Performance!
We offers a wide range of parts to boost your LB7 Duramax's power, torque, and horsepower, leaving competitors in the dust. Increase your 2001-2004 LB7 Duramax performance while potentially improving fuel efficiency with these upgrades:
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Fleece Performance '-8 Straight to Hose Barb Black FPE-PL-00-08
Regular price $7.99 USDSale price $7.99 USD Regular priceUnit price / per -
Fleece Performance '-8 90 Degree to Hose Barb Black FPE-PL-90-08
Regular price $13.99 USDSale price $13.99 USD Regular priceUnit price / per -
Fleece Performance '-8 45 Degree to Hose Barb Black FPE-PL-45-08
Regular price $12.99 USDSale price $12.99 USD Regular priceUnit price / per -
Fleece Performance '-6 to 9/16 inch-18 Straight Male Black Fleece Performance w/ O-Ring FPE-APT-916-06
Regular price $10.99 USDSale price $10.99 USD Regular priceUnit price / per -
Fleece Performance '-6 AN Straight to Hose Barb FPE-PL-00-06
Regular price $6.99 USDSale price $6.99 USD Regular priceUnit price / per -
Fleece Performance '-6 90 Deg to Hose Barb Black FPE-PL-90-06
Regular price $12.99 USDSale price $12.99 USD Regular priceUnit price / per -
Fleece Performance FPE-PL-45-06 6AN 45-Degree to Hose Barb – Black
Regular price $12.99 USDSale price $12.99 USD Regular priceUnit price / per -
Fleece Performance FPE-AN971-10DRD 10AN Aluminum Male Weld Bung – 5/8" Register, 7/8" OD
Regular price $8.35 USDSale price $8.35 USD Regular priceUnit price / per -
Fleece Performance FPE-34805-A 10 AN to 7/8-14 Straight Male Adapter – Black (Without O-Ring)
Regular price $14.96 USDSale price $14.96 USD Regular priceUnit price / per -
Fleece Performance FPE-34873-A 8 AN to 3/4-16 Straight Male Adapter – Black (Without O-Ring)
Regular price $14.96 USDSale price $14.96 USD Regular priceUnit price / per -
Fleece Performance Universal 45 Degreeree Turbo Drain Nipple with O-ring FPE-78HS-45-TDA
Regular price $34.99 USDSale price $34.99 USD Regular priceUnit price / per -
Fleece Performance Turbo Drain Adapter FPE-78-14-TDA
Regular price $12.95 USDSale price $12.95 USD Regular priceUnit price / per -
Fleece Performance Tie Rod Reinforcement Sleeves For 1999-2010 GM 2500-3500HD Pickups FPE-TIERODSLEEVES
Regular price $81.00 USDSale price $81.00 USD Regular priceUnit price / per -
S&B Filters Silverado/Sierra Body Mount Kit 2001-05 Silverado/Sierra 1500/2500/3500 Gas/Diesel Standard Cab 81-2000
Regular price $449.00 USDSale price $449.00 USD Regular priceUnit price / per -
S&B Filters INTAKE REPLACEMENT FILTER KF-1008
Regular price $69.00 USDSale price $69.00 USD Regular priceUnit price / per -
Fleece Performance Remote Turbo Oil Feed Line Kit for 6.6L Duramax Turbochargers 2001-2016 GM 2500/3500 FPE-DTFL-0116
Regular price $99.99 USDSale price $99.99 USD Regular priceUnit price / per -
Fleece Performance Remote Turbo Oil Feed Line Kit for 2001-2016 Duramax with 1/4 NPT Turbo Oil Inlet (s300/s400) 2001-2016 GM 2500/3500 FPE-DTFL-S3S4-0116
Regular price $99.00 USDSale price $99.00 USD Regular priceUnit price / per -
Fleece Performance Modified LB7 Intake Horn FPE-INTAKEHORN
Regular price $99.75 USDSale price $99.75 USD Regular priceUnit price / per -
Fleece Performance LB7 High Pressure Injection Line for 01-04 Duramax LB& (4 and 5) Fleece FPE-FL-LB7-45
Regular price $68.99 USDSale price $68.99 USD Regular priceUnit price / per -
Fleece Performance LB7 High Pressure Injection Line (3 and 6) For 01-04 Duramax LB7 Fleece FPE-FL-LB7-36
Regular price $68.99 USDSale price $68.99 USD Regular priceUnit price / per -
Fleece Performance LB7 High Pressure Injection Line (2 and 7) For 01-04 Duramax LB7 Fleece FPE-FL-LB7-27
Regular price $68.99 USDSale price $68.99 USD Regular priceUnit price / per -
Fleece Performance LB7 High Pressure Injection Line (1 and 8) Fleece FPE-FL-LB7-18
Regular price $68.99 USDSale price $68.99 USD Regular priceUnit price / per -
Fleece Performance LB7 Duramax Outer Injector Connector Pigtail FPE-HAR-DMAX-LB7-INJ-PT
Regular price $31.49 USDSale price $31.49 USD Regular priceUnit price / per -
Fleece Performance LB7 Duramax Intake Air Heater Delete Plug FPE-LB7-IAH-DELETE
Regular price $38.95 USDSale price $38.95 USD Regular priceUnit price / per -
Fleece Performance FPE-61-10001-P-CL Freedom Series Duramax Cylinder Head with Cupless Injector Bore for 2001-2004 LB7 (Passenger Side)
Regular price $1,098.00 USDSale price $1,098.00 USD Regular priceUnit price / per -
Fleece Performance FPE-61-10001-D-CL Freedom Series Duramax Cylinder Head with Cupless Injector Bore for 2001-2004 LB7 (Driver Side)
Regular price $1,099.00 USDSale price $1,099.00 USD Regular priceUnit price / per -
FASS Titanium Signature Series Diesel Fuel System 290GPH GM Duramax 6.6L 2001-2016
Regular price $849.00 USDSale price $849.00 USD Regular priceUnit price / per -
FASS Titanium Signature Series Diesel Fuel System 250GPH GM Duramax 6.6L 2001-2016
Regular price $799.00 USDSale price $799.00 USD Regular priceUnit price / per
Unleash LB7 Duramax with Performance Upgrades from Tameless Performance!
We offers a wide range of parts to boost your LB7 Duramax's power, torque, and horsepower, leaving competitors in the dust. Increase your 2001-2004 LB7 Duramax performance while potentially improving fuel efficiency with these upgrades:
- Air Intake & Filters: Upgraded air intake systems can improve airflow and increase your power output! Check out performance Intakes by S&B Filters
- Fuel System: Performance upgrades like injectors and fuel pumps can optimize fuel delivery and contribute to increased power and efficiency. Fuel Lift Pumps by Fass Fuel, Performance Injectors and Pumps by S&S Diesel, and CP3 Injection Pumps from Fleece Performance.
- Exhaust System: Performance exhaust systems can improve exhaust flow and potentially unlock additional horsepower [Tameless Performance].
- Engine & Components: This section might include performance parts like turbochargers, engine internals, and programmers to further enhance your engine's capabilities [Tameless Performance].
- Drivetrain & Differentials: Upgraded clutches, torque converters, and differentials can handle the increased power and improve overall driving experience [Tameless Performance].
- Transmission: Performance transmissions or upgraded components can optimize power transfer and improve handling of increased torque [Tameless Performance].





















