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  • Duramax
    • 2020-2022 Duramax L5P
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
      Exterior
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      2017-2019 Duramax L5P
      Engine Upgrades
      Exhaust Kits
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      2011-2016 Duramax LML
      Engine Upgrades
      Exhaust Kits
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      2007.5-2010 Duramax LMM
      Engine Upgrades
      Exhaust Kits
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      2006-2007 Duramax LBZ
      Engine Upgrades
      Exhaust Kits
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      Tonneau Covers
      Exterior
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      2004.5-2005 Duramax LLY
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
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      2001-2004 Duramax LB7
      Engine Upgrades
      Exhaust Kits
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    • 2020-2022 6.7L Powerstroke
      Engine Upgrades
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      2017-2019 6.7L Powerstroke
      Engine Upgrades
      Exhaust Kits
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      Tonneau Covers
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      2011-2016 6.7L Powerstroke
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
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      2008-2010 6.4L Powerstroke
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
      Exterior
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      2003-2007 6.0L Powerstroke
      Engine Upgrades
      Exhaust Kits
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      Engine Upgrades
      Exhaust Kits
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      1994-1997 7.3L Powerstroke
      Engine Upgrades
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    • 2019-2022 6.7L Cummins
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
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      2013-2018 6.7L Cummins
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
      Exterior
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      2010-2012 6.7L Cummins
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
      Exterior
      View More
      2007.5-2009 6.7L Cummins
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
      Exterior
      View More
      2004.5-2007 5.9L Cummins
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
      Exterior
      View More
      2003-2004 5.9L Cummins
      Engine Upgrades
      Exhaust Kits
      Suspension
      Tonneau Covers
      Exterior
      View More
      1998.5-2002 5.9L Cummins
      Engine Upgrades
      Engine Building Parts
      Turbo Upgrades
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  1. Home
  2. GM Duramax
  3. 2020-2022 GM Duramax 6.6L L5P
  4. Engine & Performance

2020-2022 GM Duramax 6.6L L5P Engine Upgrades

Additional horsepower and torque has never hurt any truck, and your 2020-2022 GM 6.6L Duramax L5P can achieve improved power, response, and performance with any of these premium aftermarket engine parts and upgrades. Here at Alligator Performance, we offer tons of Cold Air Intakes, Tuners, Cooling Upgrades, Fuel Upgrades, and Turbo Upgrades to help you get the most out of your Duramax 2500/3500. Some of these accessories like aftermarket fuel systems and upgraded cold air intakes even help extend engine life for long-lasting functionality without compromise. Whether you're sporting a Sierra 2500, Silverado 3500HD, or anything else in between, make sure not to skip out on the the 6.6L Duramax Transmission and 6.6L Duramax Exhaust Upgrades to ensure your heavy-duty truck will be ready for anything you throw at it. GM Duramax Fitments: 2020, 2021, 2022 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>2020-2022 6.6L L5P
  • Cold Air Intakes Cold Air Intakes
  • Tuners Tuners
  • Cooling Upgrades Cooling Upgrades
  • Fuel Upgrades Fuel Upgrades
  • Turbo Upgrades Turbo Upgrades

Products [41]

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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 11-17 GM 6.6L Duramax 2500HD / 3500HD  Deviant EPC Re-Calibration Kit
11-17 GM 6.6L Duramax 2500HD / 3500HD Deviant EPC Re-Calibration Kit
In Stock. Ships in 1 Business Day!
$65.00 $58.50 Sale
View Details
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
View Details
Item In Cart 17-22 GM 2500/3500HD 6.6L Duramax L5P SDP 1069 3
17-22 GM 2500/3500HD 6.6L Duramax L5P SDP 1069 3" One Piece Hot Side Intercooler Pipe
- Call 208-719-7400 for Availablity
$299.00
View Details
Item In Cart 20-21 GM 6.6L Duramax 2500HD / 3500HD  Edge V3 Pulsar Programmer
20-21 GM 6.6L Duramax 2500HD / 3500HD Edge V3 Pulsar Programmer
In Stock. Ships in 1 Business Day!
$926.95
View Details
Item In Cart 20-21 GM 6.6L Duramax 2500HD / 3500HD  L5P Edge V3 Pulsar + Insight CTS3 Package
20-21 GM 6.6L Duramax 2500HD / 3500HD L5P Edge V3 Pulsar + Insight CTS3 Package
In Stock. Ships in 1 Business Day!
$1,216.95
View Details
Item In Cart Fluidampr 830151 Performance Damper | 20+ GM 6.6L Duramax 2500HD / 3500HD  L5P
Fluidampr 830151 Performance Damper | 20+ GM 6.6L Duramax 2500HD / 3500HD L5P
In Stock. Ships in 1 Business Day!
$642.60
View Details
Item In Cart 20-21 GM 6.6L Duramax 2500HD / 3500HD  S&B Oiled Cold Air Intake
20-21 GM 6.6L Duramax 2500HD / 3500HD S&B Oiled Cold Air Intake
In Stock. Ships in 1 Business Day!
$349.00
View Details
Item In Cart 20-21 GM 6.6L Duramax 2500HD / 3500HD  S&B Cold Air Intake
20-21 GM 6.6L Duramax 2500HD / 3500HD S&B Cold Air Intake
In Stock. Ships in 1 Business Day!
$349.00
View Details
Item In Cart 08-22 Ford/Dodge/GM Trucks Transfer Flow 40 Gallon In-Bed Auxiliary Fuel Tank System Trax 4
08-22 Ford/Dodge/GM Trucks Transfer Flow 40 Gallon In-Bed Auxiliary Fuel Tank System Trax 4
- Call 208-719-7400 for Availablity
$1,898.29
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Item In Cart 08-22 Ford/Dodge/GM Trucks Transfer Flow 50 Gallon In-Bed Auxiliary Fuel Tank System Trax 4
08-22 Ford/Dodge/GM Trucks Transfer Flow 50 Gallon In-Bed Auxiliary Fuel Tank System Trax 4
- Call 208-719-7400 for Availablity
$1,753.41
View Details
Item In Cart 08-22 Ford/Dodge/GM Trucks Transfer Flow 0800116758 100 Gallon In-Bed Auxiliary Fuel Tank Trax 4
08-22 Ford/Dodge/GM Trucks Transfer Flow 0800116758 100 Gallon In-Bed Auxiliary Fuel Tank Trax 4
- Call 208-719-7400 for Availablity
$2,229.95
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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
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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
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Item In Cart Gator HSK66L5P Head Stud Kit | 17-21 GM 6.6L Duramax 2500HD / 3500HD
Gator HSK66L5P Head Stud Kit | 17-21 GM 6.6L Duramax 2500HD / 3500HD
- Ships in 3-5 Business Days
$574.99
View Details
Item In Cart Industrial 12678992 OEM Stock Fuel Injector | 17-21 GM 6.6L Duramax 2500HD / 3500HD
Industrial 12678992 OEM Stock Fuel Injector | 17-21 GM 6.6L Duramax 2500HD / 3500HD
In Stock. Ships in 1 Business Day!
$290.00
View Details
Item In Cart 11-22 GM 6.6L Duramax 2500HD / 3500HD CC-SB S&B 62 Gallon Replacement Fuel Tank
11-22 GM 6.6L Duramax 2500HD / 3500HD CC-SB S&B 62 Gallon Replacement Fuel Tank
In Stock. Ships in 1 Business Day!
$1,249.00
View Details
Item In Cart Wehrli 100361 Fuel Filter Housing | 17-22 GM 6.6L Duramax 2500HD / 3500HD  Long Bed
Wehrli 100361 Fuel Filter Housing | 17-22 GM 6.6L Duramax 2500HD / 3500HD Long Bed
- In Stock. Ships in 3-5 business days.
$222.13
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Item In Cart Wehrli 100362 Fuel Filter Housing Kit | 20-22 GM 6.6L Duramax 2500HD / 3500HD  Short Bed
Wehrli 100362 Fuel Filter Housing Kit | 20-22 GM 6.6L Duramax 2500HD / 3500HD Short Bed
- In Stock. Ships in 3-5 business days.
$222.13
View Details
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 100473 Intake Resonator Delete Plug | 17-22 GM 6.6L Duramax 2500HD / 3500HD L5P Black Anodized
Wehrli 100473 Intake Resonator Delete Plug | 17-22 GM 6.6L Duramax 2500HD / 3500HD L5P Black Anodized
- In Stock. Ships in 3-5 business days.
$27.16
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Item In Cart 20-22 GM 6.6L Duramax 2500HD / 3500HD  Wehrli Custom Fab 3.5
20-22 GM 6.6L Duramax 2500HD / 3500HD Wehrli Custom Fab 3.5" Turbo Intake Horn
- Ships in 25-30 Business Day Lead Time.
$212.43
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Item In Cart DuramaxTuner DT1160000020001 Stealth 64 Turbo | 20-21 GM 6.6L Duramax 2500HD / 3500HD  L5P
DuramaxTuner DT1160000020001 Stealth 64 Turbo | 20-21 GM 6.6L Duramax 2500HD / 3500HD L5P
- Ships in 3-5 Business Days
$3,500.00
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Item In Cart Wehrli WCF100684 Stage 2 4
Wehrli WCF100684 Stage 2 4" Intake Kit with Airbox | 20-22 GM 6.6L Duramax 2500HD / 3500HD L5P
- Ships in 25-30 Business Day Lead Time.
$771.15
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Item In Cart 20-22 GM 6.6L Duramax 2500HD / 3500HD  L5P OEM Placement Coolant Tank Kit WCF100268
20-22 GM 6.6L Duramax 2500HD / 3500HD L5P OEM Placement Coolant Tank Kit WCF100268
- Ships in 25-30 Business Day Lead Time.
$484.03
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Item In Cart 20-22 GM 2500/3500HD 6.6L Duramax L5P 3
20-22 GM 2500/3500HD 6.6L Duramax L5P 3" Drivers Hot Side Intercooler Pipe Kit
- Ships in 25-30 Business Day Lead Time.
$305.55
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Item In Cart 17-22 GM 2500/3500HD 6.6L Duramax L5P Billet Exhaust Manifolds
17-22 GM 2500/3500HD 6.6L Duramax L5P Billet Exhaust Manifolds
- In Stock. Ships in 3-5 business days.
$1,450.15
View Details
Item In Cart 20-22 GM 2500/3500HD 6.6l Duramax L5P 3.5
20-22 GM 2500/3500HD 6.6l Duramax L5P 3.5" Passenger Cold Side Intercooler Pipe Kit
- Ships in 25-30 Business Day Lead Time.
$344.35
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Item In Cart 20-22 GM 2500/3500HD 6.6L Duramax L5P Stage 1 Wehrli High Flow Intake Bundle Kit
20-22 GM 2500/3500HD 6.6L Duramax L5P Stage 1 Wehrli High Flow Intake Bundle Kit
- Ships in 25-30 Business Day Lead Time.
$625.65
View Details
Item In Cart 20-22 GM 2500/3500HD 6.6L Duramax L5P Wehrli Stage 2 High Flow Intake Bundle Kit
20-22 GM 2500/3500HD 6.6L Duramax L5P Wehrli Stage 2 High Flow Intake Bundle Kit
- Ships in 25-30 Business Day Lead Time.
$1,395.83
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Item In Cart 20-22 GM 2500/3500HD 6.6L Duramax L5P Wehrli Stage 3 High Flow Intake Bundle Kit
20-22 GM 2500/3500HD 6.6L Duramax L5P Wehrli Stage 3 High Flow Intake Bundle Kit
- Ships in 25-30 Business Day Lead Time.
$1,687.80
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Item In Cart 17-22 GM 2500/3500HD 6.6L Duramax L5P Wehrli CP3 Conversion Kit with Pump
17-22 GM 2500/3500HD 6.6L Duramax L5P Wehrli CP3 Conversion Kit with Pump
- Ships in 25-30 Business Day Lead Time.
$2,323.15
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Item In Cart 20-22 GM 2500/3500HD 6.6L Duramax L5P Wehrli Upper Coolant Pipe Kit
20-22 GM 2500/3500HD 6.6L Duramax L5P Wehrli Upper Coolant Pipe Kit
- Ships in 25-30 Business Day Lead Time.
$154.23
View Details
Item In Cart 20-22 GM 2500/3500HD 6.6L Duramax L5P DuramaxTuner Switch on the Fly Tuning With ECM Tune, Unlock & Credits
20-22 GM 2500/3500HD 6.6L Duramax L5P DuramaxTuner Switch on the Fly Tuning With ECM Tune, Unlock & Credits
- Ships in 3-5 Business Days
$2,348.95
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Item In Cart 20-22 GM 2500/3500HD 6.6L Duramax L5P PPE Premium High-Efficiency Oil Filter 114000750
20-22 GM 2500/3500HD 6.6L Duramax L5P PPE Premium High-Efficiency Oil Filter 114000750
- Ships from Manufacturer in 3-5 Business Days
$26.99
View Details
Item In Cart 17-22 GM 2500/3500HD 6.6L Duramax L5P HS Motorsports Billet Fuel Filter Housing 134001
17-22 GM 2500/3500HD 6.6L Duramax L5P HS Motorsports Billet Fuel Filter Housing 134001
In Stock. Ships in 1 Business Day!
$112.00
View Details
Item In Cart BD Diesel 1057932 TS Booster V3.0 Throttle Sensitivity Booster GM/Dodge/Ford/Jeep Applications
BD Diesel 1057932 TS Booster V3.0 Throttle Sensitivity Booster GM/Dodge/Ford/Jeep Applications
In Stock. Ships in 1 Business Day!
$278.95
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Item In Cart 20-22 GM 2500 / 3500HD 6.6L Duramax Wehrli 4
20-22 GM 2500 / 3500HD 6.6L Duramax Wehrli 4" Cold Air Intake Kit with Box WCF100702
- Ships in 25-30 Business Day Lead Time.
$581.03
View Details
Item In Cart 20-22 GM 2500 / 3500HD 6.6L Duramax L5P Wehrli 4
20-22 GM 2500 / 3500HD 6.6L Duramax L5P Wehrli 4" Intake Resonator Pipe Kit WCF100720
- Ships in 25-30 Business Day Lead Time.
$207.58
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Item In Cart 20-22 GM 2500 / 3500HD 6.6L Duramax L5P DuramaxTuner STR Drop In Replacement Turbocharger with Billet Wheel
20-22 GM 2500 / 3500HD 6.6L Duramax L5P DuramaxTuner STR Drop In Replacement Turbocharger with Billet Wheel
Call 208-719-7400 for Availability!
$1,800.00
View Details
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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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      • Leveling Kits
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      • Tonneau Covers
      • Exterior
      • View More
    • 2011-2016 Duramax LML
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
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      • Exterior
      • View More
    • 2007.5-2010 Duramax LMM
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
      • View More
    • 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
      • Tonneau Covers
      • Exterior
      • View More
    • 2001-2004 Duramax LB7
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
      • View More
  • Powerstroke
    • 2020-2022 6.7L Powerstroke
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
      • View More
    • 2017-2019 6.7L Powerstroke
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
      • View More
    • 2011-2016 6.7L Powerstroke
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
      • View More
    • 2008-2010 6.4L Powerstroke
      • Engine Upgrades
      • Exhaust Kits
      • Leveling Kits
      • Lift Kits
      • Tonneau Covers
      • Exterior
      • View More
    • 2003-2007 6.0L Powerstroke
      • Engine Upgrades
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      • Leveling Kits
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      • Exterior
      • View More
  • Cummins
    • 2019-2022 6.7L Cummins
      • Engine Upgrades
      • Exhaust Kits
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    • 2013-2018 6.7L Cummins
      • Engine Upgrades
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    • 2003-2004 5.9L Cummins
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