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USD 1671.07
Part #: PBC44076

Pacbrake C44076 DirectMount PRXB Max Flow Exhaust Brake

Vehicle Fitment:
1996-1998 Dodge 5.9L Diesel (Automatic) | See full application list below
Part #: PBC44076
$1,671.07
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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.

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

PACBRAKE'S MAXIMUM EXHAUST FLOW DESIGN
This 4" PRXB Exhaust Brake is designed with a unique cast housing specifically for 1994-2002 Dodge Ram trucks (equipped with 5.9L turbocharged diesel engines). Integrated with the patented PRXB design for the most braking horsepower at low engine RPM's, this brake is engineered to reduce the use of your service brakes while maximizing the exhaust flow. The 'maximum exhaust flow design' allows waste gate gases to escape the engine faster and spool the turbocharger faster to decrease turbo lag. In turn, this increases horsepower and torque while lowering EGTs (exhaust gas tempatures). The brake's 5 bolt flange bolts directly to the turbocharger outlet (Directmount design) eliminating the restrictive factory flange. Exhaust pipe adapters are available to fit factory and all larger aftermarket exhaust systems.

Features:
  • PRXB Delivers Strongest Braking Horsepower
  • Less Wear & Tear On Service Brakes
  • Ideal For In-City Driving Or Steel, Downhill Grades Mounts To Stock Turbocharger
  • Vehicles with aftermarket 4" O.D. exhaust systems will require (1) C11342 adapter. (see below)
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
1996 Dodge Ram 2500 5.9
1997 Dodge Ram 2500 5.9
1998 Dodge Ram 2500 5.9
1996 Dodge Ram 3500 5.9
1997 Dodge Ram 3500 5.9
1998 Dodge Ram 3500 5.9

Specifications

  • MPN C44076
  • SKU PBC44076
  • GTIN 628480001197
  • ID 19127
  • 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 L0R0

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Questions and Answers

Will this product work with a BD Super B singe turbo with a 4" turbo back exhaust system? I have a 4"down pipe. Not sure if I'm going to go with a twin turbo. May just keep it a great work truck but i had to lose the BD exhaust brake when I went with a bigger turbo and 4" down pipe. Will this work with the BD Single B?
View Staff Answer 
Answer
The only BD turbo that will accept a turbo mounted exhaust break is the BD Killer B turbo. The Super B turbos would require a remotely mounted exhaust brake.

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