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Pacbrake DirectMount 4" PRXB High Performance Exhaust Brake Only For Ram 03-04 5.9L

Thoroughbred Sku #: PACC40110
Manufacturer Sku #: C40110

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Product Details

Product Name: Pacbrake DirectMount 4" PRXB High Performance Exhaust Brake Only For Ram 03-04 5.9L
Manufacturer: Pacbrake
Manufacturer Part #: C40110
Thoroughbred Diesel Part #: PACC40110
Fitment Notes: 2003-2004 Ram 5.9L

Overview

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 Only for Dodge RAM 2003-2004 Cummins 5.9L ISB 24 Valve with Standard and 47RE / 48RE Automatic Transmission. Replaces Fixed Orifice Exhaust Brakes.

Product Description

  • 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 maximise 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.

    • Pacbrake's Direct Mount 4 inch PRXB High Performance Exhaust Brake Only for Dodge RAM 2003-2004 Cummins 5.9L ISB 24 Valve Engine with Standard and 47RE / 48RE Automatic Transmission.Upgrade.

    Replaces Fixed Orifice Exhaust Brake. 

    For Standard Transmission:

    • Switch: Optional (Pacbrake Part Number C18042), 
    • ECM Bypass: Optional (Pacbrake Part Number C14037).

    For Automatic Transmission:

    • Transmission Controller: Not Included

    Details:

    • Application: Dodge RAM 2003-2004 Cummins 5.9L ISB 24 Valve
    • Size: 4.0 Inch
    • Hose Length: 25 Foot
    • Hose Type: Coiled
    • Capacity: .5 Gallon
    • Mount: Direct Mount
    • Valve: 24 Valve
    • Engine Manufuacturer: Cummins
    • Engine Years: 2003-2004
    • Liters: 5.9 Liter

    Application Notes

    • All DirectMount 2003-2007 kits will NOT work with Banks Turbo Back Monster® Exhaust. However, they will work with Banks Cat BackMonster® Exhaust. Applications for aftermarket turbo chargers, please contact Pacbrake for further kit information: 800.663.0096. EXHAUST BRAKE ONLY.

    Pacbrake DirectMount 4" PRXB High Performance Exhaust Brake Features:

    • Pacbrake's PRXB exhaust brake delivers the strongest braking horsepower, greatest speed reductions & shortest stopping distances possible without the use of service brakes.
    • Providing 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.
    • The brakes use industry exclusive Arcor nitride coating on housing and components which increases resistance to wear and corrosion.
    • EXHAUST BRAKE ONLY Replaces Fixed Orifice Exhaust Brake.
    • For more information on Pacbrake call us at 1-859-737-4966

Reviews

Submit a question

  • 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 direct mount exhaust brake?

    Roger White | 5/21/2019

    DirectMount –This application is preferred because of the reduced number of connections between the exhaust brake and the turbocharger. The mating surfaces are both machined cast iron which eliminates any chance of exhaust leaks.

    For vehicles with straight back systems shortening of the header pipe is required to maintain an adequate amount of flex pipe. Vehicles with a 90° header pipe use a cast elbow to interface with the stock header pipe. Pacbrake offers replacement header pipes for some truck models.