PacBrake Pressure Regulated Exhaust Brake (PRXB) Kit, Ford 1995-1998 7.3 Powerstroke auto/standard transmission

Catalog Item # 33897

Pressure regulated high performance exhaust brake offers the highest retarding power for the most affordable price.

The PRXB’s retarding power is comparable to that of a compression release engine brake. Conventional exhaust brakes experience a reduced exhaust backpressure at low engine speeds, resulting in an unnecessary loss of braking power. PacBrake’s innovative PRXB uses 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.


  • Stainless steel sealed air cylinder
  • Automatic low RPM adjustment
  • Maximum allowable exhaust backpressure limit
  • No overpressure potential
  • 90° closing, non-contacting butterfly valve
  • ARCOR nitride housing and components
  • Free flow exhaust
  • Precision mounting surface

    Controlled by a master On/Off switch, PacBrake exhaust brakes provide whisper quiet supplemental braking that allows service brakes to be used much less, ultimately saving money. PacBrake exhaust brakes can be left on all the time, making it ideal for in-city driving or for steep, downhill grades. Pays for itself in less wear on the brake pads, which means fewer brake jobs.

    Direct mount, air actuated exhaust brake comes with AMP Onboard Air Kit which includes compressor, ½ gallon air tank, 25 ft. coiled air hose, air accessories and fittings plus transmission controller (when required for application).

  • Technical Specifications

    25 lbs.

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