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Make your Cummins powered Ram like the big rig it is with an exhaust Jake brake from Jacobs & Mopar.
An electronically controlled valve is placed in the exhaust system to generate backpressure, slowing your engine, drivetrain and vehicle. A Jake Brake helps save on brake pad and rotor life, provides increased driving control when towing and/or driving in hilly areas and helps warm the cab in twice the time.
Designed and tested by Dodge, Cummins & Jacobs. Professional installation recommended.
| Fitment |
| Year | Model | | 2005-2008 | 2500 | | 2005-2008 | 3500 | | For use on 2005-2006 Manual Transmissions and 2006 Automatic Transmissions. | | 
