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Pacbrake Configuration Wizard

Catalog Item # 20708d
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For Pacbrake Mail-In Rebate Click Here. Follow the rebate instructions for redemption. Offer Expires July 1, 2015.
  • The Pacbrake is an auxiliary braking device used to supplement your standard braking system.
  • Pacbrake can extend the life of your brakes by as much as 5 times.
  • Pacbrake exhaust brakes are designed specifically for individual engine applications to maximize performance and reliability.
  • Save on repairs and reduce the risk of brake fade.
  • Mfr. 5 year/150,000 mile warranty.

  • Technical Specs

    Tech Specs

    Weight: 11.35 lbs.


    Manufacturer: Pacbrake Co


    Pacbrake Configuration Wizard: Customer Reviews

    Camper's Choice Rating

    (5 Based on 2 Reviews)

    Reviewed by 2 customers


    PRXB is great, but the Wizard can be misleading for CAT 3126

    0 out of 0 people found this review helpful.
    April 22, 2013
    The PacBrake (PB) PRXB is an excellent product and a direct replacement for an existing PB, but with improved performance at slower engine RPM. The new PRXB comes with installation instructions, but there are none for replacing an existing PB. More than likely, the 2 existing clamps can be re-used, as well as the existing air solenoid and Hamilton valve if they were working with the original PB. My clamps seemed almost new after 17 years of use on our motorhome with a CAT 3126 engine, but I recently had to replace the original Hamilton valve (about $35). Remove the air hose to the Hamilton value and remove the valve from the PB cylinder.. You may need to move some of the plumbing to the new PB in order to attach the Hamilton valve to it. To remove the old PB, first loosen the two clamps. To create some room in the exhaust line to get the PB out, un-clamp the muffler and other downstream piping temporarily and slide all of that an inch or so away from the PB. (On mine, I had to loosen only 2 clamps holding the muffler.) You may have to tap (gently) on the old PB to loosen the bonds. Then remove the old PB, attach the new one to the turbo, and attach the other side after sliding the exhaust line back in place tightly and at the correct angle for the exhaust pipe. Re-attach the air line to the Hamilton valve and you should be in business. The Configuration Wizard suffers from some typos in the data it uses to help determine which PRXB is needed, and the terminology does not coincide with the terminology at the PB website. The Wizard produces a Camping World (CW) part number, but then crashes with an Error In Database Search message, which I assumed was to find some other useful information about what I was ordering, such as the PB part number. Until CW corrects these problems, there is no way to determine which CW part number corresponds to which PB part number and making an ordering error is more likely.
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    Great product!

    0 out of 0 people found this review helpful.
    February 20, 2012
    I tow a 33' fifth wheel with a 2003 Chevy 2500HD with the Duramax and Allison. The truck pulls great and the engine/transmission does a good job of braking. I added the Pacbrake since I tow a lot in the mountains of northern New Mexico and southern Colorado and it makes a huge difference when descending steep hills! I am able to maintain my speed much better than with the transmission braking alone and it really saves on using your brakes. I never realized what I was missing until I had it installed. I would definately recommend this product to anyone towing heavy trailers whether on steep grades or not!
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