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UnderDog Diesel » GMC, Sierra 2500
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- Make: GMC
- Model: Sierra 2500
View Universal items for: GMC Sierra 2500
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Catch Can Kit
Description: Fits:
ALL 2020-2026 6.6L GM Duramax equipped pickup trucks
ALL 2020-2026 6.6L GM Duramax equipped cab and chassis models.
Works with stock CCV & Aftermarket CCV Kits*
*If the truck is a...More Details »
Item #: VSE-20-24-L5P-CC
Condition:
New
(Raw - Ships in 3-5 Business Days)
(Midnight Black - Estimated 10-15 Business Day Lead Time)
Price: $399.99
Description: Will NOT fit Pro Model Truck
Item #: UDD-2024-52MM-Mount-D
Condition:
New
Price: $85.00
Description: Will NOT fit Pro Model Truck
Item #: UDD-2024-52MM-Mount-S
Condition:
New
Price: $65.00
Description: Fitment Note:
Stock Cold Side Piping
WCFAB Cold Side Piping (Uses Billet Adapter/Coupler that came with the WCFAB Piping)
Item #: 24-25-TV-UPG-STOCK
Condition:
New
Limited Supply: Only 3 Left!
Price: $259.99
Item #: GEN2-L5P-PEDESTAL-KIT
Condition:
New
ETA - April 2026
(Do Not Order if you CANNOT wait.)
Price: $449.99
Description: - Airflow Capable of Supporting up to 700HP
- Custom Billet Compressor Wheel
- Turbine Wheel and Nozzle Ring Upgrades
- Improved EGT Control
- Compressor and turbine wheel durability upgrades...More Details »
Item #: DM1QQ1070200000
Condition:
New
Price: $3,100.00
Description: - Airflow capable of supporting up to 750HP
- Compressor and turbine wheel durability upgrades
- Custom Billet compressor wheel
- Turbine Wheel and Nozzle Ring Upgrades
- Major top end EGT...More Details »
Item #: DM1QQ1070303000
Condition:
New
Price: $3,500.00
Description: - Extra airflow to make 80-100rwhp over 'Tune only' L5P
- Works with box tuners, custom tuning, or without tuning
- Major EGT control improvements compared to stock
- Built to last with more...More Details »
Item #: DM1QQ1070103000
Condition:
New
Price: $2,400.00
Raw - 5-7 Business Day Lead Time | Black - 10-20 Business Day Lead Time
Price: $398.99
This item is non-returnable. Sales are final.
Price: $129.00
Description: Supports up to 650HP w/ proper supporting modifications.
Item #: JZ-DMAX-63-LLY-NEW
Condition:
New
This product cannot ship to the state of California.
Price: $2,599.00
Description: Supports up to 650HP w/ proper supporting modifications. INCLUDES Turbo Vane Position Sensor Adapter Harness *Needed for LLY Models*
Item #: JZ-DMAX-63-LLY-NEW + Adapter
Condition:
New
This product cannot ship to the state of California.
Price: $2,650.00
Description: Supports up to 650HP w/ proper supporting modifications.
Item #: JZ-DMAX-63-LML-NEW
Condition:
New
This product cannot ship to the state of California.
Price: $2,599.00
Description: Supports up to 700HP w/ proper supporting modifications.
Item #: JZ-DMAX-65-LLY-NEW
Condition:
New
This product cannot ship to the state of California.
Price: $2,699.00
Description: Supports up to 700HP w/ proper supporting modifications.
Item #: JZ-DMAX-65-LML-NEW
Condition:
New
This product cannot ship to the state of California.
Price: $2,699.00
Description: Supports up to 775HP w/ proper supporting modifications.
Item #: JZ-DMAX-68-LLY-NEW
Condition:
New
This product cannot ship to the state of California.
Price: $3,499.00
Description: Allows for complete removal of the flexible line
Caps off the hardline at the frame.
Truck must be tuned for off-road use only.
Item #: UDD-D49-9.49
Condition:
New
In stock.
Price: $5.99
Air Suspension Helper Spring Kit
Description: The LoadLifter 7500 XL Ultimate offers greater leveling strength for towing and hauling with 7-inch double-bellows air springs and up to 7,500 lbs. load-leveling capacity. The fully adjustable kit...More Details »
Item #: 57538
Condition:
New
Price: $1,105.65
Air Suspension Helper Spring Kit
Description: LoadLifter 5000 ULTIMATE with internal jounce bumper to absorb shock for best ride comfort Adjustable air spring kit for leaf springs Rear Safely run w/zero air pressure
Item #: 88275
Condition:
New
Price: $817.14
Air Suspension Helper Spring Kit
Description: LoadLifter 5000 ULTIMATE Leaf spring air spring kit with internal jounce bumper
Item #: 88341
Condition:
New
Price: $962.37
Suspension Leveling Kit
Description: The LoadLifter 7500 XL Ultimate offers greater leveling strength for towing and hauling with 7-inch double-bellows air springs and up to 7,500 lbs. load-leveling capacity. The fully adjustable kit...More Details »
Item #: 57575
Condition:
New
Price: $938.21
Air Suspension Helper Spring Kit
Description: The LoadLifter 7500 XL Ultimate offers greater leveling strength for towing and hauling with 7 inch double bellows air springs and up to 7500 lbs. load-leveling capacity. The fully adjustable kit...More Details »
Item #: 57541
Condition:
New
Price: $1,105.65
Air Suspension Helper Spring Kit
Description: Offering up to 5,000 pounds of load-leveling capacity, the LoadLifter 5000 Ultimate kit from Air Lift will make towing and hauling a breeze. Fits: Chevrolet: Silverado 2500 HD 2011 - 2019,...More Details »
Item #: 88338
Condition:
New
Price: $962.37
Air Suspension Helper Spring
Description: Replacement Bellows for PN(57338).
Item #: 50297
Condition:
New
Price: $197.69
Suspension Leveling Kit
Description: LoadLifter 5000; Leaf Spring Leveling Kit.
Item #: 57275
Condition:
New
Price: $617.11
Suspension Leveling Kit
Description: LoadLifter 5000; Leaf Spring Leveling Kit.
Item #: 57338
Condition:
New
Price: $768.74
Suspension Leveling Kit
Description: LoadLifter 5000; Leaf Spring Leveling Kit.
Item #: 57341
Condition:
New
Price: $768.74
Contamination Kit
Description: Fits : 2020-2023 L5P 6.6L Duramax
Item #: AP54822
Condition:
New
Price: $5,304.02
Item #: AP63593
Condition:
New
Price: $323.68
9th Injector Doser
Item #: AP63592
Condition:
New
Price: $327.36
High Pressure Fuel Pump Installation Kit
Item #: AP0127
Condition:
New
Price: $55.66
High Pressure Fuel Pump & EGR Valve Installation Kit
Item #: AP0129
Condition:
New
Price: $64.99
High Pressure Fuel Pump & EGR Valve Installation Kit
Item #: AP0128
Condition:
New
Price: $54.99
High Pressure Fuel Pump & EGR Valve Installation Kit
Item #: AP0130
Condition:
New
Price: $75.26
Exhaust Gas Recirculation Temperature (EGRT) Sensor
Description: 2017-2023 L5P Duramax (Position 1, Located in the Passenger Exhaust Manifold)
2019-2023 L5D Duramax (Position 1)
Item #: AP63616
Condition:
New
Price: $54.99
Exhaust Gas Recirculation Temperature (EGRT) Sensor
Description: 2017-2023 L5P Duramax (Position 2, Located in the EGR Pipe)
2019-2023 L5D Duramax (Position 2)
Item #: AP63630
Condition:
New
Price: $40.30
Exhaust Gas Temperature (EGT) Sensor
Description: 2017-2023 L5P Duramax (Position 1)
2019-2023 L5D Duramax (Position 1)
Item #: AP63618
Condition:
New
Price: $43.99
Exhaust Gas Temperature (EGT) Sensor
Description: EGT 1 (In Downpipe)
Item #: AP63610
Condition:
New
Price: $40.09
Item #: AP63608
Condition:
New
Price: $69.99
Exhaust Gas Temperature (EGT) Sensor
Description: EGT 2 (Post DOC)
Item #: AP63611
Condition:
New
Price: $40.88
Item #: AP63629
Condition:
New
Price: $69.99
Exhaust Gas Temperature (EGT) Sensor
Description: 2017-2023 L5P Duramax (Position 2)
2019-2023 L5D Duramax (Position 2/3/4)
Item #: AP63617
Condition:
New
Price: $42.99
Exhaust Gas Temperature (EGT) Sensor
Description: EGT 3 (Pre-DPF DOC)
Item #: AP63612
Condition:
New
Price: $53.99
Exhaust Gas Temperature (EGT) Sensor
Description: 2017-2023 L5P Duramax (Position 3, 4, 5)
2019-2023 L5D Duramax (Position 5)
Item #: AP63615
Condition:
New
Price: $40.47
Exhaust Gas Temperature (EGT) Sensor
Description: EGT 5 (Post DPF)
Item #: AP63609
Condition:
New
Price: $39.99
Fuel Contamination Kit
Item #: AP54820
Condition:
New
Price: $5,238.52
Fuel Filter Head Rebuild Kit
Item #: AP0029
Condition:
New
Price: $49.99
Injector Return Line Seal Kit
Description: 1 Kit required per Injector Bank.
Item #: AP0133
Condition:
New
Price: $53.25
Fuel Rail Pressure (FRP) Sensor
Description: 2017-2023 L5P Duramax
2019-2023 L5D Duramax
Item #: AP63632
Condition:
New
Price: $144.25
Description: Fits Injectors 1,3,6,8
Item #: AP0132
Condition:
New
Price: $49.99
Description: Fits Injectors 2, 4, 5, 7
Item #: AP0131
Condition:
New
Price: $49.99
Item #: AP63596
Condition:
New
Price: $215.99
MAF Sensor
Item #: AP63598
Condition:
New
Price: $109.99
Item #: AP63597
Condition:
New
Price: $199.99
Injection Pump
Item #: AP54951
Condition:
New
Price: $831.12
Injection Pump
Item #: AP54950
Condition:
New
Price: $613.34
Description: *8 Required Per Engine*
Item #: AP54800
Condition:
New
Price: $284.45
Description: *2 Kits Per Required Per Engine*
Item #: AP54802
Condition:
New
Price: $1,373.45
Item #: AP05521S
Condition:
New
Price: $1,265.77
Item #: AP0203
Condition:
New
Price: $229.77