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      2008-2010 6.4L Powerstroke
      Engine Upgrades
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      Engine Upgrades
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    • 2019-2022 6.7L Cummins
      Engine Upgrades
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      Tonneau Covers
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      2013-2018 6.7L Cummins
      Engine Upgrades
      Exhaust Kits
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      Tonneau Covers
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      2010-2012 6.7L Cummins
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
      Exterior
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      2007.5-2009 6.7L Cummins
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
      Exterior
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      2004.5-2007 5.9L Cummins
      Engine Upgrades
      Exhaust Kits
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      Tonneau Covers
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      2003-2004 5.9L Cummins
      Engine Upgrades
      Exhaust Kits
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      Tonneau Covers
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      1998.5-2002 5.9L Cummins
      Engine Upgrades
      Engine Building Parts
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  1. Home
  2. GM Duramax
  3. 2001-2004 GM Duramax 6.6L LB7
  4. Engine & Performance

2001-2004 GM Duramax 6.6L LBZ Engine Upgrades

The 6.6L Duramax LB7 under the hood of your 2001-2004 GM Sierra/Silverado 2500/3500 may be one of the best and most efficient engines out there, but even the toughest trucks have some power and performance waiting to be unleashed through various performance modifications. Here at Alligator Performance, we carry a selection of cold air intakes, tuners, fuel upgrades, and turbo upgrades to help you get the most out of your diesel engine. Many of these upgrades like the cold air intakes and fuel upgrades even help promote component longevity so you can enjoy long-lasting and consistent performance without compromise. After you've added a few engine upgrades to your custom build, be sure to check out our premium 2001-2004 GM 6.6L Duramax LLY Transmission Upgrades to compliment the increase in power you're throwing down! GM Duramax Fitments: 2001, 2002, 2003, 2004 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.

GM Duramax>2001-2004 6.6L LB7
  • Cold Air Intakes Cold Air Intakes
  • Tuners Tuners
  • Cooling Upgrades Cooling Upgrades

Products [36]

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Item In Cart Edge Products Insight CTS3 5
Edge Products Insight CTS3 5" Touch Screen Digital Gauge Monitor
In Stock. Ships in 1 Business Day!
(1)
$462.95
View Details
Item In Cart 01-04 GM 2500/3500HD 6.6L Duramax LB7 BD High Idle Control Kit
01-04 GM 2500/3500HD 6.6L Duramax LB7 BD High Idle Control Kit
In Stock. Ships in 1 Business Day!
$39.95
View Details
Item In Cart Banks 55232 Exhaust Brake | 01-04 GM 6.6L Duramax 2500HD / 3500HD  LB7
Banks 55232 Exhaust Brake | 01-04 GM 6.6L Duramax 2500HD / 3500HD LB7
- Ships in 3-5 Business Days
$1,479.00
View Details
Item In Cart Fluidampr 890101 for  Externally Blanced 01-05 GM 6.6L Duramax 2500HD / 3500HD  LB7-05 LLY
Fluidampr 890101 for Externally Blanced 01-05 GM 6.6L Duramax 2500HD / 3500HD LB7-05 LLY
- Ships in 3-5 Business Days
$528.70
View Details
Item In Cart 01-10 GM 6.6L Duramax 2500HD / 3500HD  FASS Titanium Signature Fuel Lift Pump (100GPH)
01-10 GM 6.6L Duramax 2500HD / 3500HD FASS Titanium Signature Fuel Lift Pump (100GPH)
In Stock. Ships in 1 Business Day!
$699.00
View Details
Item In Cart 01-10 GM 6.6L Duramax Deviant Power Steering Lines
01-10 GM 6.6L Duramax Deviant Power Steering Lines
In Stock. Ships in 1 Business Day!
$185.00 $166.50 Sale
View Details
Item In Cart 01-06 GM 6.6L Duramax 2500HD / 3500HD  South Bend HYDX-MAX Hydraulic Slave Cylinder
01-06 GM 6.6L Duramax 2500HD / 3500HD South Bend HYDX-MAX Hydraulic Slave Cylinder
In Stock. Ships in 1 Business Day!
$195.21
View Details
Item In Cart Ppe 111002000 High Idle Valet Switch | 03-04 GM 6.6L Duramax 2500HD / 3500HD
Ppe 111002000 High Idle Valet Switch | 03-04 GM 6.6L Duramax 2500HD / 3500HD
- Ships from Manufacturer in 3-5 Business Days
$53.99
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Item In Cart 01-16 GM 2500/3500HD 6.6L Duramax PPE Billet Aluminum Engine Oil Filler Cap
01-16 GM 2500/3500HD 6.6L Duramax PPE Billet Aluminum Engine Oil Filler Cap
In Stock. Ships in 1 Business Day!
$53.99
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Item In Cart 01-22 GM 2500/3500HD PPE 114003005 Viton O-Ring for Oil Fill Cap
01-22 GM 2500/3500HD PPE 114003005 Viton O-Ring for Oil Fill Cap
In Stock. Ships in 1 Business Day!
$5.39
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Item In Cart 01-16 GM 2500/3500HD PPE 14mm Billet Hardened Stainless Steel Magnetic Drain Plug for OEM & PPE Engine Oil Pans
01-16 GM 2500/3500HD PPE 14mm Billet Hardened Stainless Steel Magnetic Drain Plug for OEM & PPE Engine Oil Pans
In Stock. Ships in 1 Business Day!
$17.99
View Details
Item In Cart PPE 115900200 Silicone Hose | 01-10 GM 6.6L Duramax 2500HD / 3500HD
PPE 115900200 Silicone Hose | 01-10 GM 6.6L Duramax 2500HD / 3500HD
In Stock. Ships in 1 Business Day!
$53.99
View Details
Item In Cart PPE 116454021 Mass Air Flow Sensor Mount | 01-07 GM 6.6L Duramax 2500HD / 3500HD
PPE 116454021 Mass Air Flow Sensor Mount | 01-07 GM 6.6L Duramax 2500HD / 3500HD
In Stock. Ships in 1 Business Day!
$33.29
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Item In Cart 01-16 GM 2500/3500HD 6.6L Duramax PPE Air Bleeder Screw - Yellow Finish
01-16 GM 2500/3500HD 6.6L Duramax PPE Air Bleeder Screw - Yellow Finish
In Stock. Ships in 1 Business Day!
$13.49
View Details
Item In Cart 01-11 GM 2500/3500HD 6.6L Duramax PPE Water Level Sensor (WIF) Wrench
01-11 GM 2500/3500HD 6.6L Duramax PPE Water Level Sensor (WIF) Wrench
In Stock. Ships in 1 Business Day!
$22.49
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Item In Cart 01-16 GM 2500/3500HD 6.6L Duramax PPE Air Bleeder Screw - Black Finish
01-16 GM 2500/3500HD 6.6L Duramax PPE Air Bleeder Screw - Black Finish
In Stock. Ships in 1 Business Day!
$13.49
View Details
Item In Cart 01-10 GM 2500/3500HD 6.6L Duramax SDP 1041 Hot Side Intercooler Pipe
01-10 GM 2500/3500HD 6.6L Duramax SDP 1041 Hot Side Intercooler Pipe
- Call 208-719-7400 for Availablity
$299.00
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Item In Cart 01-10 GM 6.6L Duramax 2500HD / 3500HD  AirDog Fuel Lift Pump (100GPH)
01-10 GM 6.6L Duramax 2500HD / 3500HD AirDog Fuel Lift Pump (100GPH)
In Stock. Ships in 1 Business Day!
$645.00
View Details
Item In Cart 01-05 GM 6.6L Duramax ATI Super Damper Diesel Harmonic Balancers
01-05 GM 6.6L Duramax ATI Super Damper Diesel Harmonic Balancers
- Ships in 3-5 Business Days
$455.21
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Item In Cart Transfer Flow 0800116206 40 Gallon Refueling Tank System
Transfer Flow 0800116206 40 Gallon Refueling Tank System
- Call 208-719-7400 for Availablity
$1,790.87
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Item In Cart Transfer Flow 50 Gallon Refueling Tank System 0800109417 | Universal Trucks
Transfer Flow 50 Gallon Refueling Tank System 0800109417 | Universal Trucks
- Call 208-719-7400 for Availablity
$1,687.64
View Details
Item In Cart Transfer Flow 0800109420 82 Gallon Refueling Tank System | Universal Trucks
Transfer Flow 0800109420 82 Gallon Refueling Tank System | Universal Trucks
- Call 208-719-7400 for Availablity
$1,914.06
View Details
Item In Cart 01-16 GM 6.6L Duramax 2500HD / 3500HD  Edge Evolution CTS3 CARB Programmer
01-16 GM 6.6L Duramax 2500HD / 3500HD Edge Evolution CTS3 CARB Programmer
In Stock. Ships in 1 Business Day!
$730.95
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Item In Cart Wehrli 100442 Billet Oil Fill Tube Cap | 01-22 GM GM 6.6L Duramax 2500HD / 3500HD  LB7/LLY/LBZ/LMM/LML/L5P Clear Anodized
Wehrli 100442 Billet Oil Fill Tube Cap | 01-22 GM GM 6.6L Duramax 2500HD / 3500HD LB7/LLY/LBZ/LMM/LML/L5P Clear Anodized
- In Stock. Ships in 3-5 business days.
$49.47
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Item In Cart Wehrli 100334 4
Wehrli 100334 4" Intake Kit | 01-04 GM 6.6L Duramax 2500HD / 3500HD LB7
- Ships in 25-30 Business Day Lead Time.
$344.35
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Item In Cart 01-04 GM 2500/3500HD 6.6L Duramax LB7 DuramaxTuner Stealth 67G2 Turbocharger up to 800HP Peak Power
01-04 GM 2500/3500HD 6.6L Duramax LB7 DuramaxTuner Stealth 67G2 Turbocharger up to 800HP Peak Power
- Ships in 3-5 Business Days
$2,400.00
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Item In Cart 01-04 GM 2500/3500HD 6.6L Duramax LB7 3.5
01-04 GM 2500/3500HD 6.6L Duramax LB7 3.5" Wehrli Intake Horn
- Ships in 25-30 Business Day Lead Time.
$131.92
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Item In Cart 01-04 GM 2500/3500HD 6.6L Duramax LB7 Wehrli 3
01-04 GM 2500/3500HD 6.6L Duramax LB7 Wehrli 3" Drivers Side Intercooler Pipe
- Ships in 25-30 Business Day Lead Time.
$280.33
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Item In Cart 01-16 GM 2500/3500HD 6.6L Duramax Wehrli Billet Exhaust Manifolds
01-16 GM 2500/3500HD 6.6L Duramax Wehrli Billet Exhaust Manifolds
- Ships in 7-10 Business Day Lead Time.
$1,289.13
View Details
Item In Cart 01-07 GM 2500/3500HD 6.6L Duramax LB7/LLY/LBZ Wehrli OEM Placement Coolant Tank Kit
01-07 GM 2500/3500HD 6.6L Duramax LB7/LLY/LBZ Wehrli OEM Placement Coolant Tank Kit
- Ships in 25-30 Business Day Lead Time.
$435.53
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Item In Cart 01-19 GM 2500/3500HD 6.6L Duramax PPE High Efficiency Engine Oil Filter 114000550
01-19 GM 2500/3500HD 6.6L Duramax PPE High Efficiency Engine Oil Filter 114000550
- Ships from Manufacturer in 3-5 Business Days
$35.99
View Details
Item In Cart 01-19 GM 2500/3500HD 6.6L Duramax PPE MicroPure Extreme Performance Engine Oil Filter 114000555
01-19 GM 2500/3500HD 6.6L Duramax PPE MicroPure Extreme Performance Engine Oil Filter 114000555
- Ships from Manufacturer in 3-5 Business Days
$35.99
View Details
Item In Cart 01-16 GM 2500/3500HD 6.6L Duramax PPE 12mm Billet Hardened Stainless Steel Magnetic Oil Drain Plug for OEM Engine Oil Pan 114052201
01-16 GM 2500/3500HD 6.6L Duramax PPE 12mm Billet Hardened Stainless Steel Magnetic Oil Drain Plug for OEM Engine Oil Pan 114052201
- Ships from Manufacturer in 3-5 Business Days
$17.99
View Details
Item In Cart 01-05 GM 2500/3500 6.6L Duramax LB7 / LLY Sinister Welded Water Pump SD-WWP-01
01-05 GM 2500/3500 6.6L Duramax LB7 / LLY Sinister Welded Water Pump SD-WWP-01
- Ships from Manufacturer in 3-5 Business Days
$245.99
View Details
Item In Cart 01-04 GM 2500/3500HD 6.6L Duramax LB7 Wehrli Stage 1 High Flow Intake Bundle Kit WCF100411
01-04 GM 2500/3500HD 6.6L Duramax LB7 Wehrli Stage 1 High Flow Intake Bundle Kit WCF100411
- Ships in 25-30 Business Day Lead Time.
$1,056.33
View Details
Item In Cart 01-05 GM 2500 / 3500HD 6.6L Duramax LB7 / LLY Wehrli Upper Coolant Pipe Kit WCF100860
01-05 GM 2500 / 3500HD 6.6L Duramax LB7 / LLY Wehrli Upper Coolant Pipe Kit WCF100860
- Ships in 25-30 Business Day Lead Time.
$130.95
View Details
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  • GM Duramax
    • 2020-2022 GM Duramax 6.6L L5P
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  • Ford Powerstroke
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Categories

  • Duramax
    • 2020-2022 Duramax L5P
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
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    • 2017-2019 Duramax L5P
      • Engine Upgrades
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      • Exterior
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    • 2011-2016 Duramax LML
      • Engine Upgrades
      • Exhaust Kits
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      • Exterior
      • View More
    • 2007.5-2010 Duramax LMM
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
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    • 2006-2007 Duramax LBZ
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
      • View More
    • 2004.5-2005 Duramax LLY
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
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      • Exterior
      • View More
    • 2001-2004 Duramax LB7
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
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      • Tonneau Covers
      • Exterior
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  • Powerstroke
    • 2020-2022 6.7L Powerstroke
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
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      • Tonneau Covers
      • Exterior
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    • 2017-2019 6.7L Powerstroke
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
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    • 2011-2016 6.7L Powerstroke
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
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    • 2008-2010 6.4L Powerstroke
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
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    • 2003-2007 6.0L Powerstroke
      • Engine Upgrades
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      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
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  • Cummins
    • 2019-2022 6.7L Cummins
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
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      • Tonneau Covers
      • Exterior
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    • 2013-2018 6.7L Cummins
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
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    • 2010-2012 6.7L Cummins
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
      • View More
    • 2007.5-2009 6.7L Cummins
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
      • View More
    • 2004.5-2007 5.9L Cummins
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
      • View More
    • 2003-2004 5.9L Cummins
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