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03-04 Dodge 5.9L Cummins Manual Trans w/Existing Air PacBrake PRXB Exhaust Brake

03-04 Dodge 5.9L Cummins Manual Trans w/Existing Air PacBrake PRXB Exhaust Brake

From PacBrake PacBrake




Fits: 2003-2004 Dodge 5.9L Cummins Diesel trucks w/ manual transmission
Works with aftermarket S300 turbos which utilize the stock cast-iron elbow.

Diesel engines, unlike gasoline engines, don't slow down simply by taking your foot off the accelerator; they rely on service and supplemental brakes. An exhaust brake is a form of a supplemental brake, and they work much differently than their conventional counterparts.

Introducing the Pacbrake PRXB

Pacbrake’s flagship product, the PRXB (pressure regulated exhaust brake), is the unquestioned leader in the supplemental brake industry. The patented PRXB design delivers the strongest braking horsepower, greatest speed reductions and shortest stopping distance possible without the use of service brakes. It maintains optimum retarding performance by maximizing the exhaust backpressure throughout the entire RPM range. Unlike a typical exhaust brake, which requires high RPMs to work properly, the PRXB delivers constant exhaust pressure (braking) as early as 1200 RPM through to the maximum allowable RPM.

Controlled by a master ON/OFF switch, Pacbrake’s exhaust brakes provide whisper quiet supplemental braking that allows service brakes to be used much less, ultimately saving you money. They have the ability to be left on all the time, making it ideal for in-city driving or for steep, downhill grades. This product pays for itself as less wear on the brake pads means fewer brake jobs. 

This kit does NOT include an air compressor.


03-04 Cummins

PacBrake part number:  C44030

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