Pacbrake InLine Mount PRXB Exahust Brake - 94-98 Dodge Cummins (Manual)

Thoroughbred Sku #: PACC44060
Manufacturer Sku #: C44060




  • 1994 - 1998 Dodge Ram 2500
  • 1994 - 1998 Dodge Ram 3500

Product Details

Product Name: Pacbrake InLine Mount PRXB Exhaust Brake
Manufacturer: Pacbrake
Manufacturer Part #: C44060
Thoroughbred Diesel Part #: PACC44060
Fitment Notes: Pacbrake InLine Mount PRXB Exhaust Brake - 94-98 Dodge Cummins (Manual)

1994-1998 (MANUAL) Cummins 5.9L 6BT 12 Valve Engine

InLineMount 4" PRXB High Performance Exhaust Brake Kit (Air Actuated). Comes with Air Tank, Hose & Accessories. If the factory cast elbow has been removed a mounting group must be added.

A PRXB is a Pressure Regulated Exhaust Brake that offers the highest retarding power for the lowest price available. Although the PRXB's retarding power is comparable to that of a compression release engine brake, the manufacturing and installation costs are significantly less.

Conventional exhaust brakes experience a reduced exhaust backpressure at low engine speeds, resulting in an unnecessary loss of braking power. Pacbrake's innovative PRXB addresses this issue with a patented wastegate design that regulates exhaust backpressure as engine speed changes. The valve maintains near constant engine backpressure throughout the entire RPM range, providing maximum exhaust braking power at all times.

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 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.

InLine Mount Note:
For vehicle's in which the factory HX / HY35 turbo charger has been changed to an aftermarket turbo charger, use only an inline kit. A mounting group must also be purchased with the kit.
Exhaust Size: 4" - C11400, 3.5" - C11420, 3" - C11440

Kit Contents
Every PRXB Automotive Kit comes with a everything required for a complete installation:
  • PRXB Exhaust Brake
  • Controller (when required for application)
  • AMP Onboard Air Kit, which includes (HP325 Series Compressor, 1/2 Gal Air Tank, 25ft Coiled Air Hose, Air Accessories & Fittings Kit)
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  • If I turn on my exhaust brake when my truck is first started, will it help to warm my engine sooner in cold weather?

    Jim Hader | 5/21/2019

    Yes! This is a bonus feature of an exhaust brake. It creates a restriction at idle that puts a slight load on the engine, causing the engine to warm up faster.

  • My exhaust brake comes on at a idle, why is that?

    Robbie Maines | 5/21/2019

    This is a normal operation if the engine is not warm. This allows the engine to warm up sooner by increasing engine load at idle. This feature can be turned off by cycling the toggle switch 8 times.

  • How can I tell how much back pressure my exhaust brake is producing?

    Wade Harris | 5/21/2019

    Every Pacbrake exhaust brake has a 1/8" NPT port tapped into the side of the exhaust brake housing. It has a port plug threaded into it from the factory. Remove the plug and install a back pressure gauge to this port. Go for a test drive and observe the backpressure readings.

  • What type of maintenance is needed on my exhaust brake?

    Adam Clark | 5/21/2019

    The exhaust brake requires very little maintenance. If it is switched off the brake will go through an "exercise cycle" which activates the brake 3x at startup. This is to ensure it does not stick or seize up with inactive use. Also, it is recommended to apply a few drops of Pacbrake Super Lube to all pivot points every 3-6 months.

  • Can I change the spring in my PRXB exhaust brake to a stronger one and will it make my exhaust brake harder?

    Jeremy Mineer | 5/21/2019

    No, you cannot. This spring is specifically calibrated and adjusted and made tamperproof on the assembly line. This is done to ensure each application is matched to the maximum engine backpressure and will not cause any damage. Tampering with the springs will void the warranty and potentially cause severe engine damage.

  • When should a turbo mount with a cast adapter be used?

    James Holder | 5/21/2019

    This application is the preferred option for vehicles with a tight 90° bent header pipe post turbocharger. The cast adapter is constructed from cast iron with machined mating surfaces on both ends, eliminating any chance of exhaust leaks.

  • What is a fixed orifice exhaust brake?

    Casey Rogers | 5/21/2019

    This is a traditional style exhaust brake tuned for maximum allowable backpressure at the maximum engine rated RPM by the drilling of a carefully selected hole size in the butterfly valve.

  • Explain an inlinemount exhaust brake?

    Tom Anderson | 5/21/2019

    InLineMount – Some vehicle configurations do not allow for clearance around the turbocharger, for installation of a DirectMount exhaust brake, these applications require an InLineMount. Inline exhaust brakes require a minimum 7" of straight exhaust pipe which is then cut out and exhaust flange adapters are installed in its place. Ensure the exhaust brake is mounted as close to the turbocharger as possible and away from road spray.

    NOTE: Clamped joints that exist between the brake and the engine must be welded to ensure that the joints cannot separate or leak under pressure. No flex pipe is allowed between the exhaust brake and the turbocharger.

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