Pacbrake C44052 – 4″ PRXB Exhaust Brake Kit – 2004.5-2005 Cummins 6.7L

Code: C44052


In Stock


2004.5-2005 Cummins AT 4″ PRXB Exhaust Brake Kit (C44052)



Get the highest braking power to lowest price ratio available on the market with PRXB Exhaust Brakes by Pacbrake.

We are proud suppliers of exhaust brake systems for use in the US Army’s fleet of Stryker Wheeled Vehicles designed and built by General Dynamics Land Systems.

Check out Pacbrake’s Direct Mount 4 inch PRXB High Performance Exhaust Brake Kit for Dodge RAM 2004.5- 2005 Cummins 5.9L ISB 24 Valve Engine with 48RE Automatic Transmission.


  • Provides 50 percent More Braking Power at Lower RPM’s. PRXB gives you the best holdback in the 1400-1800 RPM range (where you typically drive).
  • The spring controlled pressure regulated mechanism on the exhaust brakes protects against engine overpressure.
  • When the brake is deactivated, exhaust flow is unrestricted and won’t interfere with power output.
  • Patented 90 degree Non-contacting Butterfly Valve is specially engineered to maximize backpressure while preventing seizing.
  • The brakes use industry exclusive Arcor nitride coating on housing and components which increases resistance to wear and corrosion while strengthening the exhaust brake and adding lubricity.

Every PRXB Automotive Kit comes with everything required for a complete installation. PRXB Exhaust Brake, Controller (when required for application) and Pacbrake Onboard Air Kit, which includes: HP325 Series Compressor, 0.5 Gal Air Tank, 25 Foot Coiled Air Hose, Air Accessories and Fittings Kit.

Air Actuated-Comes with Air Tank, Hose and Accessories.

      • Transmission Controller: Included.



    • Application: Dodge RAM 2004.5- 2005 Cummins 5.9L ISB 24 Valve
    • Size: 4.0 Inch
    • Hose Length: 25 Foot
    • Hose Type: Coiled
    • Capacity: .5 Gallon
    • Transmission: Automatic Transmission
    • Mount: Direct Mount
    • Valve: 24 Valve
    • Engine Manufacturer: Cummins
    • Engine Years: 2004.5- 2005
    • Liters: 5.9 Liter

Additional information

Weight30 lbs

Model Specific

This part fits select models

DodgeCummins 5.92004
DodgeCummins 5.92005