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USD 1285.64
Part #: PBC44045

Pacbrake C44045 DirectMount PRXB Exhaust Brake

Vehicle Fitment:
2004.5-2007 Dodge 5.9L Diesel (Manual) | 2006-2007 Dodge 5.9L Diesel (Automatic) | See full application list below
Part #: PBC44045
★★★★★ ★★★★★ 1 Reviews
$1,285.64
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Description

Pacbrakes 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 distances 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, Pacbrakes 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.

Features:
  • For Use On Stock Turbocharger
  • Less Wear & Tear On Service Brakes 
  • PRXB Delivers Strongest Braking Horsepower
  • Ideal For In-City Driving Or Steel, Downhill Grades

WHATS SO SPECIAL ABOUT THE PRXB?
In order to have consistent and effective braking over the entire RPM range, it is important (and necessary) to maintain constant backpressure. To achieve this, Pacbrakes patented design has incorporated an additional waste gate on the butterfly valve to regulate the amount of exhaust flow that is being passed through. The flow is controlled by a spring-loaded arm, whose pressure rating and location are key factors in the functionality of the PRXB. Located outside of the housing and away from the heat, the spring is able to maintain its strength and durability for years of proper and precise braking performance.




CREATING & MAINTAINING BACKPRESSURE
Backpressure is created by exhaust flow entering the housing, hitting the closed butterfly valve and being forced back out in the direction it came. It is maintained by the pressure-controlled spring that is located on the outside of the exhaust brake housing.

PREMIUM BRAKING PERFORMANCE
As the engines RPM increase, the spring compresses and the arm moves away from the butterfly valve, therefore releasing more exhaust flow through the orifice. As the RPMs decrease, the spring releases and the arm applies pressure back onto the plate, covering the hole, and ultimately releasing a smaller amount of exhaust flow.

There is less than a 10% change in backpressure over the entire RPM range on the PRXB


Shipping Restrictions Apply shipping restriction icon This product can not be shipped to these states/provinces: CA

Vehicle Fitment

YEAR MAKE MODEL FOR ENGINE SERIES
2005 Dodge Ram 2500 5.9
2006 Dodge Ram 2500 5.9
2007 Dodge Ram 2500 5.9
2005 Dodge Ram 3500 5.9
2006 Dodge Ram 3500 5.9
2007 Dodge Ram 3500 5.9

Specifications

  • MPN C44045
  • SKU PBC44045
  • GTIN 628480001012
  • ID 19139
  • Manufacturer Name Pacbrake
  • Shipping Weight 35.00 lb.
  • Shipping Length 18 in.
  • Shipping Width 17 in.
  • Shipping Height 10 in.
  • Fuel Type Diesel
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
  • Internal L2R5

Reviews

★★★★★ ★★★★★
5.0/5 Stars out of 1 Reviews
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Verified Buyer
PacBrake Exhaust Brake
5
Works very well. You still have to tap the brakes every once in a while if you have a heavy load on going down a steep grade. It slowed down my welding rig and my 37’ Fifth wheel great. I added the switch pac to my shifter but the only think bad about it is that it doesn’t tighten all the around the shifter so I had to add a piece of electrical tape to get it to clamp tight.

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Questions and Answers

Does this kit contain all parts required for a functioning brake including compressor?
View Staff Answer 
Answer
Yes, The Pacbrake C44045 DirectMount PRXB Exhaust Brake comes as a complete kit including the compressor.
I have already added a 5" MBRP exhaust system, will this still fit?
View Staff Answer 
Answer

Yes it will fit. The exhaust bake utilizes your factory V-Band flange and turbo mounting points.

Does this product come with a computer that talks to the trans and the ecm?
View Staff Answer 
Answer

The Pacbrake C44045 DirectMount PRXB Exhaust Brake comes complete with the harness for wiring the system into your truck. http://pacbrake.com/wp-content/upload...

I have a 4 inch turbo back mbrp echaust on my 2005 dodge cummins manuel. Will this work and what diamiter is it?
View Staff Answer 
Answer

Yes, it will fit. The exhaust bake utilizes your factory V-Band flange and turbo mounting points. Roughly 3.5" in diameter

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