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UnderDog Diesel » 2021, Silverado 2500
Products for:
- Year: 2021
- Model: Silverado 2500
View Universal items for: 2021 Silverado 2500
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Fuel Injector
Item #: DDP L5P-50
Condition:
New
Price: $3,650.00
Sale: $3,467.50
Save: 5%
Save: $182.50
Fuel Injector
Item #: DDP L5P-STK
Condition:
New
Price: $365.00
Sale: $346.75
Save: 5%
Save: $18.25
Description: In-vehicle ECM/TCM unlock
Adds up to 125hp/275tq to the tires at Peak RPM's
Monitor displays important data like Soot, Miles Since Last Regen, EGT's, Boost and Fluid Temperatures
10-speed...More Details »
Item #: 85400-261
Condition:
New
Price: $1,049.95
Description: Exergy 2017+ L5P Stock Replacement Injector
Item #: E02 10701
Condition:
New
Price: $2,400.00
Price: $63.00
Dedicated Fuel Systems
Item #: DIFSL5P1001
Condition:
New
Price: $504.21
Dedicated Fuel Systems
Item #: DIFSL5P2001
Condition:
New
Price: $504.21
Item #: NDTSPC15290F240G
Condition:
New
Price: $1,051.58
Air Suspension Helper Spring
Description: Kit comes with commercial grade air springs, upper and lower brackets that are industrial coated to prevent rust, DOT rated tubing, Automotive standard hardware and fittings, compressor, analog...More Details »
Item #: 2825
Condition:
New
Price: $1,311.73
Air Suspension Helper Spring
Description: 224CZ 3/4 OFF BNCTR
Item #: 6401
Condition:
New
Price: $217.79
Air Suspension Helper Spring
Description: Note: Do not exceed the vehicles GVWR. Fits: GM Silverado/Sierra 2500/3500HD (2WD/4WD)
Item #: 2860
Condition:
New
Price: $1,470.61
No Image Available
Suspension Leveling Kit
Description: RED Label Ride Rite Extreme Duty Air Spring Kit
Item #: 2709
Condition:
New
Price: $987.38
Suspension Leveling Kit
Description: Ride-Rite Air Helper Spring Kit Rear Incl. Brackets Air Helper Springs Hardware Air Line And Inflation Valves No Drilling Required
Item #: 2613
Condition:
New
Price: $866.80
Pigtail
Item #: FPE-HAR-CUMM-ALT-0722
Condition:
New
Price: $20.99
NEW!
Description: Exclusive 63mm Compressor Wheel
12 Blade Turbine
Gasket Kit - Included
CARB EO# D-834-19
Item #: FPE-L5P-VNT63-1723
Condition:
New
Price: $2,499.00
Sale: $2,399.00
Save: 4%
Save: $100.00
Description: -New Valves
-New Valve Guides
-New Valve Springs
-New Valve Seals
No Core Charge
Item #: FPE-61-10014-D
Condition:
New
Please Call for Availability
Description: -New Valves
-New Valve Guides
-New Valve Springs
-New Valve Seals
No Core Charge
Item #: FPE-61-10014-P
Condition:
New
Please Call for Availability
Description: 2017-2019 L5P Fuel Filter Upgrade Kit For Short and Long Bed applications as well as 2020-2024 Crew Cab Long Bed applications.
Item #: FPE-L5P-FFBA-1719
Condition:
New
Price: $229.00
Description: 2020+ L5P Fuel Filter Upgrade Kit For Short Bed Applications and 2024 Regular Cab Long Bed Applications
Item #: FPE-L5P-FFBA-20
Condition:
New
Price: $229.00
Item #: FPE-HAR-MU-PT-7
Condition:
New
Price: $28.99
Item #: FPE-L5P-MAP-SPR
Condition:
New
Price: $68.99
Item #: FPE-HAR-L5P-INJ-PT-4P
Condition:
New
Price: $179.99
Item #: FPE-HAR-L5P-INJ-PT-8P
Condition:
New
Price: $299.99
Item #: FPE-HAR-L5P-INJ-PT
Condition:
New
Price: $59.99
Item #: FPE-HAR-MU-PT-1
Condition:
New
Price: $37.99
Engine Harmonic Balancer
Description: Harmonic Balancer - Fluidampr-2020+ GM / Chevy Duramax L5P - Steel - Black Zinc Chromate - 8-3/8" dia - 30.6 lbs - SFI 18.1 - Made in USA - Each Fits: 2020+ GM/Chevy 6.6L Duramax L5P
Item #: 830151
Condition:
New
Price: $685.10
Engine Harmonic Balancer
Description: Harmonic Balancer - Fluidampr - GM L8T - L87 - L84 - 2019-2022 GM/Chevy Truck/SUVs/Vans
Item #: 760151
Condition:
New
Price: $491.30
Suspension Shock Absorber Kit
Description: Application specific valving to maximize performance.
Item #: 883-26-084
Condition:
New
Price: $1,679.95
Suspension Shock Absorber Kit
Description: Application specific valving to maximize performance.
Item #: 883-26-085
Condition:
New
Price: $1,679.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-238
Condition:
New
Price: $229.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-239
Condition:
New
Price: $229.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-240
Condition:
New
Price: $229.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-241
Condition:
New
Price: $229.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-242
Condition:
New
Price: $356.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-243
Condition:
New
Price: $356.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-244
Condition:
New
Price: $356.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-245
Condition:
New
Price: $356.95
Allison 1000 5SPD - 6SPD
Item #: GFP-ALLISON
Condition:
New
Price: $349.00
Allison 10L1000
Item #: ATC-(#)-2020
Condition:
New
Current build time of 6-8 business days.
Price: $1,845.00
Description: Conveniently upgrade your E41 ECM, found in the 2017-2023 Chevy Silverado and GMC Sierra 2500/3500 6.6L Duramax trucks (L5P and L5D applications), without removing it from the vehicle. Upgrade your...More Details »
Item #: ECM-00-L5P-K
Condition:
New
Price: $199.99
Cold Air Intake
Item #: HSP-D-602-2-HSP-CUST
Condition:
New
Not Available
Cold Air Intake
Item #: HSP-D-602-2-HSP-BR
Condition:
New
Not Available
Cold Air Intake
Item #: HSP-D-602-2-HSP-CB
Condition:
New
Not Available
Cold Air Intake
Item #: HSP-D-602-2-HSP-CR
Condition:
New
Not Available
Cold Air Intake
Item #: HSP-D-602-2-HSP-CP
Condition:
New
Not Available
Cold Air Intake
Item #: HSP-D-602-2-HSP-GB
Condition:
New
Not Available
Cold Air Intake
Item #: HSP-D-602-2-HSP-DG
Condition:
New
Not Available
Cold Air Intake
Item #: HSP-D-602-2-HSP-O
Condition:
New
Not Available
Cold Air Intake
Item #: HSP-D-602-2-HSP-W
Condition:
New
Not Available
Cold Air Intake
Item #: HSP-D-602-2-HSP-SB
Condition:
New
Not Available
Intercooler Pipes
Item #: HSP-D-600-2-HSP-CUST
Condition:
New
Not Available
Intercooler Pipes
Item #: HSP-D-600-2-HSP-BR
Condition:
New
Not Available
Intercooler Pipes
Item #: HSP-D-600-2-HSP-CB
Condition:
New
Not Available
Intercooler Pipes
Item #: HSP-D-600-2-HSP-CR
Condition:
New
Not Available
Intercooler Pipes
Item #: HSP-D-600-2-HSP-CP
Condition:
New
Not Available
Intercooler Pipes
Item #: HSP-D-600-2-HSP-GB
Condition:
New
Not Available
Intercooler Pipes
Item #: HSP-D-600-2-HSP-DG
Condition:
New
Not Available
Intercooler Pipes
Item #: HSP-D-600-2-HSP-O
Condition:
New
Not Available
Intercooler Pipes
Item #: HSP-D-600-2-HSP-W
Condition:
New
Not Available