- Home »
- Catalog
UnderDog Diesel » 2018, GMC, Sierra 3500
Products for:
- Year: 2018
- Make: GMC
- Model: Sierra 3500
View Universal items for: 2018 GMC Sierra 3500
Browse Products
Dedicated Fuel Systems
Item #: TSC13180F140G
Condition:
New
Price: $841.05
Sale: $799.00
Save: 5%
Save: $42.05
Dedicated Fuel Systems
Item #: TSC13250F220G
Condition:
New
Price: $893.68
Sale: $849.00
Save: 5%
Save: $44.68
Dedicated Fuel Systems
Item #: TSC13290F240G
Condition:
New
Price: $946.32
Sale: $899.00
Save: 5%
Save: $47.32
Dedicated Fuel Systems
Item #: TSC14140F110G
Condition:
New
Price: $893.68
Sale: $849.00
Save: 5%
Save: $44.68
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
Item #: FPE-TL-L5P-1719
Condition:
New
Price: $329.99
Price: $512.54
Item #: FPE-DUR-S2-PROD
Condition:
New
Price: $490.19
Item #: FPE-HAR-DMAX-FAN-L5P
Condition:
New
Price: $45.99
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
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-MU-PT-1
Condition:
New
Price: $37.99
Engine Harmonic Balancer
Description: Harmonic Balancer - Fluidampr-2017-2019 GM / Chevy Duramax L5P - Steel - Black Zinc Chromate - 8-3/8" dia - 27.6 lbs - SFI 18.1 - Made in USA - Each Fits: 2017-2019 GM/Chevy 6.6L Duramax L5P
Item #: 830141
Condition:
New
Price: $563.55
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-659
Condition:
New
Price: $199.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-664
Condition:
New
Price: $199.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-958
Condition:
New
Price: $199.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-963
Condition:
New
Price: $199.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-965
Condition:
New
Price: $199.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-967
Condition:
New
Price: $199.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-189
Condition:
New
Price: $199.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-190
Condition:
New
Price: $199.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-955
Condition:
New
Price: $309.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-956
Condition:
New
Price: $309.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-957
Condition:
New
Price: $309.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-964
Condition:
New
Price: $309.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-966
Condition:
New
Price: $309.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-24-968
Condition:
New
Price: $309.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-191
Condition:
New
Price: $309.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-24-192
Condition:
New
Price: $309.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 980-26-968
Condition:
New
Price: $429.95
Suspension Shock Absorber
Description: Application specific valving to maximize performance.
Item #: 985-26-191
Condition:
New
Price: $429.95
Allison 1000 5SPD - 6SPD
Item #: A101-32C2BILLET
Condition:
New
Price: $499.00
Allison 1000 5SPD - 6SPD
Item #: GFP-ALLISON
Condition:
New
Price: $349.00
Allison 1000 6SPD (2017 - 2019)
Item #: A-GT6KIT-L5P
Condition:
New
Current build time of 10-12 business days.
Price: $3,699.00
Allison 1000 6SPD (2017 - 2019)
Item #: ATC-L5P
Condition:
New
Current build time of 9-11 days.
Price: $1,545.00
Allison 1000 5SPD - 6SPD
Item #: A-PAN-A1000-KIT
Condition:
New
Price: $319.00
Description: Cap for L5P Coolant Pipe
Item #: RSCC-025-BLK w/13-15
Condition:
New
Price: $15.25
Accessory Switch
Description: HP Tuners Diesel Switch (GM E41-L5P)
Item #: H-M04-00
Condition:
New
Price: $79.99
No Image Available
Engine Control Module (ECM)
Description: HP Tuners L5P - Modified ECM Purchase
Item #: ECM-00-L5P-P
Condition:
New
Price: $1,499.99
No Image Available
Engine Control Module (ECM)
Description: HP Tuners L5P - ECM Exchange Service
Item #: ECM-00-L5P-E
Condition:
New
Price: $649.99
No Image Available
Engine Control Module (ECM)
Description: HP Tuners L5P - ECM Upgrade Service
Item #: ECM-00-L5P-U
Condition:
New
Price: $649.99
Suspension Traction Bar
Item #: 605-HSP-CUST
Condition:
New
Price: $410.00
Sale: $389.50
Save: 5%
Save: $20.50
Suspension Traction Bar
Item #: 605-HSP-BR
Condition:
New
Price: $335.00
Sale: $318.25
Save: 5%
Save: $16.75
Suspension Traction Bar
Item #: 605-HSP-CB
Condition:
New
Price: $335.00
Sale: $318.25
Save: 5%
Save: $16.75
Suspension Traction Bar
Item #: 605-HSP-CR
Condition:
New
Price: $335.00
Sale: $318.25
Save: 5%
Save: $16.75
Suspension Traction Bar
Item #: 605-HSP-CP
Condition:
New
Price: $335.00
Sale: $318.25
Save: 5%
Save: $16.75
Suspension Traction Bar
Item #: 605-HSP-GB
Condition:
New
Price: $335.00
Sale: $318.25
Save: 5%
Save: $16.75
Suspension Traction Bar
Item #: 605-HSP-DG
Condition:
New
Price: $335.00
Sale: $318.25
Save: 5%
Save: $16.75
Suspension Traction Bar
Item #: 605-HSP-O
Condition:
New
Price: $335.00
Sale: $318.25
Save: 5%
Save: $16.75
Suspension Traction Bar
Item #: 605-HSP-W
Condition:
New
Price: $335.00
Sale: $318.25
Save: 5%
Save: $16.75
Suspension Traction Bar
Item #: 605-HSP-RAW
Condition:
New
Price: $295.00
Sale: $280.25
Save: 5%
Save: $14.75
Suspension Traction Bar
Item #: 605-HSP-SB
Condition:
New
Price: $335.00
Sale: $318.25
Save: 5%
Save: $16.75
Suspension Traction Bar
Item #: 600-1-HSP-CUST
Condition:
New
Price: $380.00
Sale: $361.00
Save: 5%
Save: $19.00
Suspension Traction Bar
Item #: 600-1-HSP-BR
Condition:
New
Price: $305.00
Sale: $289.75
Save: 5%
Save: $15.25