Embrace Your Tameless

2001-2004 6.6L LB7 DURAMAX

At Tameless Performance, we know that quality components are key to maximizing your 2001-2004 LB7 Duramax engine's performance. That’s why we offer an extensive range of top-tier upgrades, including turbochargers, injectors, performance tuners, and exhaust systems. Sourced from leading manufacturers, our products are engineered to deliver unmatched power, efficiency, and durability.

cylinder heads, valve train, fasteners

engine parts & accessories

Suspension, axle shafts, & steering

drivetrain & chassis

Fuel pumps, injectors, & accessories

FUEL SYSTEM UPGRADES

CAI, Air Filters, Intake Manifolds

AIR INTAKE SYSTEMs & FILTERS

Turbos, clamps, & replacement parts

TURBOS & ACCESSORIES

Cooler Lines, Pans, Electronics

Transmissions & accessories

manifold, head studs, main studs

HEAD STUDS & FASTENERS

Lift Kits, Body Mounts, Shocks

Suspension & Steering

2020-2024 6.6L L5P Duramax2017-2019 6.6L L5P Duramax2011-2016 6.6L LML Duramax2007.5-2010 6.6L LMM Duramax2006-2007 6.6L LLY/LBZ Duramax2004.5-2005 6.6L LLY Duramax

2001-2004 6.6L LB7 DURAMAX

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Straight Cut Stack Cover 8 inch Fleece Performance view 1
Straight Cut Stack Cover 8 inch Fleece Performance
$50.39
Straight Cut Stack Cover 7 inch Fleece Performance view 1
Straight Cut Stack Cover 7 inch Fleece Performance
$48.29
Straight Cut Stack Cover 6 inch Fleece Performance view 1
Straight Cut Stack Cover 6 inch Fleece Performance
$47.24
Straight Cut Stack Cover 5 inch Fleece Performance view 1
Straight Cut Stack Cover 5 inch Fleece Performance
$46.19
Multiuse Pressure Sensor 36 Inch Pigtail Fleece Performance view 1
Left Right
Multiuse Pressure Sensor 36 Inch Pigtail Fleece Performance
$24.99
Multiuse Sensor 6 Inch Pigtail Fleece Performance view 1
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Multiuse Sensor 6 Inch Pigtail Fleece Performance
$19.99
Universal Turbo Drain Nipple with Integrated O-Ring Seal 7/8 Inch Hose Fleece Performance view 1
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Universal Turbo Drain Nipple with Integrated O-Ring Seal 7/8 Inch Hose Fleece Performance
$24.00
S and B 22 Gallon Wheel Well Water Tank (Passenger Side) S and B view 1
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S & B 10-3004 22 Gallon Wheel Well Water Tank (Passenger Side)
$299.00
FASS Fuel Systems Drop-In Series Electric Heater Probe Kit (DIFSHK1001) view 1
FASS Fuel Systems Drop-In Series Electric Heater Probe Kit (DIFSHK1001)
$160.55
Rail Pressure Sensor 6 Inch Pigtail Fleece Performance view 1
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Rail Pressure Sensor 6 Inch Pigtail Fleece Performance
$25.99
GM Duramax Oil Cooler Adapter Kit Fleece Performance view 1
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GM Duramax Oil Cooler Adapter Kit Fleece Performance
$99.00
Fleece Performance Billet PTO Covers Fleece Performance view 1
Fleece Performance Billet PTO Covers Fleece Performance
$104.99
FASS STK1005 Diesel Fuel Bulkhead and Viton Suction Tube Kit view 1
FASS STK1005 Diesel Fuel Bulkhead and Viton Suction Tube Kit
$94.05
FASS DMAX7001 Duramax Diesel Fuel System Flow Enhancer GM Duramax 6.6L 2001-2010 view 1
FASS DMAX7001 Duramax Diesel Fuel System Flow Enhancer GM Duramax 6.6L 2001-2010
$426.55
Duramax Turbo Thermostat Delete Plug Fleece Performance view 1
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Duramax Turbo Thermostat Delete Plug Fleece Performance
$39.85
Duramax SuperSport CP# view 1
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Duramax SuperSport CP3
$1,130.00
Duramax S300-S400 Turbo Installation Kit Fleece Performance view 1
Duramax S300-S400 Turbo Installation Kit Fleece Performance
$292.95
Duramax 14mm High Speed CP3 with SP3000 Supply Pump view 1
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Duramax 14mm High Speed CP3 with SP3000 Supply Pump
$3,450.00
Duramax 14mm High Speed CP3 view 1
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Duramax 14mm High Speed CP3
$2,900.00
Duramax 14mm CP3 view 1
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Duramax 14mm CP3
$2,800.00
Duramax 12mm High Speed CP3 with SP3000 view 1
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Duramax 12mm High Speed CP3 with SP3000 Supply Pump
$3,150.00
Duramax 12mm High Speed CP3 view 1
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Duramax 12mm High Speed CP3
$2,600.00
Duramax 12mm CP3 view 1
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Duramax 12mm CP3
$2,500.00
Duramax 10mm High Speed CP3 view 1
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Duramax 10mm High Speed CP3
$2,200.00

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].

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