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Vehicle Info NeededBANKSPART NUMBER: 139-66582
Derringer Tuner w/ Switch for 2017-2018 Chevy/GMC 2500/3500 6.6L Duramax L5P
$47999
Ships on 09/30/2026
Lowest Price GuaranteeDerringer Tuner w/ Switch2017-2018 Chevy/GMC 2500/3500 6.6L Duramax L5P Adds Up to 61 HP/112 ft.-lbs. 3 On-the-Fly Power Levels OBD-II Connected Plug-and-Play Installation Sold as a Kit
The Banks 66582 Derringer tuner adds selectable power to 2017-2018 Chevy and GMC 2500/3500 trucks equipped with the 6.6L Duramax L5P. The included switch provides three on-the-fly power levels, while OBD-II vehicle data is used to support real-time tuning and built-in engine and drivetrain safeguards.
Banks 66582 Features:
- Fits 2017-2018 Chevy/GMC 2500/3500 6.6L Duramax L5P applications
- Adds up to 61 HP and 112 ft.-lbs.
- 3 power levels adjustable on-the-fly with the included switch
- OBD-II connection communicates with vehicle data
- AutoRate, TransCommand, and ActiveSafety strategies support safe power delivery
- Plug-and-play installation
- Waterproof compact electronics
Banks 66582 Includes:
- Derringer tuner
- Power-level switch
- Required connection harnesses
Part TypeIgnition Performance Module
BrandBANKS
Package Height6.0
Package Width6.0
Package Length10.0
Weight2.0 PG
Part CategoryPerformance Parts
Horsepower IncreaseUp to 61 HP
Idash IncludedNo
Control Switch IncludedYes
Part TypeIgnition Performance Module
Obd-Ii CompatibleYes
QuantitySold as a Kit
Torque IncreaseUp to 112 ft.-lbs.
Product SeriesDerringer
Part FitmentDirect Fit
Application2017-2018 Chevy/GMC 2500/3500 6.6L Duramax L5P
Power Level Quantity3
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
