c44073 - 4" PRXB Exhaust Brake kit with Maximum Exhaust Flow Design Air Actuated DirectMount Comes with Air Tank/Hose and Accessory Kit and Heavy Duty Exhaust Valve Springs. For 1994 - 1995 5.9L 12 Valve with 3" Stock Exhaust System with HX35 Turbo.
Trucks with 4" aftermarket exhaust system or trucks equipped with aftermarket non HX35 turbos please contact Peak Diesel Performance before ordering
This 4" PRXB Exhaust Brake is designed with a unique cast housing specifically for 1994-1998 Dodge Ram trucks (equipped with 5.9L Cummins diesel engines and HX turbos).
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.
Pacbrake Max Flow: The Name Says It All
It's Obvious That The Pacbrake Design Will Reduce EGT's Over Stock Dodge & All Competitor's Versions
PRXB Exhaust Brakes
Diesel engines, unlike gasoline engines, don't slow down simply by taking your foot off the accelerator; they rely on service and supplemental brakes. An exhaust brake is a form of a supplemental brake, and they work much differently than their conventional counterparts. Read what our customers have to say...
Introducing the Pacbrake PRXB
Pacbrake’s 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, Pacbrake’s 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.
PRXB Exhaust Brakes: Our Kits
Everything Is Included
There are a number of components required to operate an exhaust brake, but we conveniently include everything you need in our exhaust brake kits.
AIR COMPRESSOR, TANK & CURLY HOSE
Every exhaust brake requires an air compressor and air tank to operate. Often mounted under the hood, Pacbrake’s air compressor builds up pressure in the air tank that is released during braking.
Pacbrake’s ½ gallon air tank works with the exhaust brake and air compressor to speed up the exhaust brake cylinder activation. It does this by storing air pressure (created by the compressor) and holding it until needed. Outside the air tank there is a 135 PSI pressure switch that controls the amount of air pressure contained inside. As the pressure drops a signal is sent to the compressor to create more air, thereby filling the tank back to its full capacity.
Generally frame mounted, this onboard air tank also provides an air source for operating air horns and air springs (as well as any other air-operated accessories your vehicle may have). PLEASE NOTE: If you are operating more than one air operated product and prefer a larger air tank and/or compressor, upgrades are available.
A 25ft curly hose with an assortment of accessories is also included and easily stored in a heavy duty nylon bag. Just attach the curly hose to the quick disconnect chuck off of the air compressor (your external air source) and you’re able to perform a variety of jobs including:
Filling tires and checking air pressure
Inflating air mattresses, footballs, beach toys etc.
Blowing air (for cleaning, dusting, quick removal of debris)
EXHAUST BRAKE & TRANSMISSION CONTROLLERS
Most of our exhaust brake kits come with a controller. This small device is responsible for engaging the vehicle’s exhaust brake by monitoring the following settings: engine speed, vehicle speed and throttle position. It reads the vehicle’s data and analyzes the results to decide what actions must be taken. If your brake kit didn’t come with a controller kit it simply means your vehicle doesn’t need it.
Pacbrake has two types of controllers, one that is strictly an exhaust brake controller as outlined above, and the other is combination brake controller and transmission controller. This dual control is designed for vehicles with automatic transmissions to improve the functionality of the exhaust brake. It does this by taking control of the torque converter solenoid to modulate the pressure that the torque converter sees. Essentially, it forces the clutch to disengage in the torque converter and puts the vehicle into full lock-up, resulting in less slippage and smoother exhaust brake activation.
EXHAUST BRAKE ADAPTERS
When it comes to installing an exhaust brake on your diesel vehicle there are two different mounting configurations. Shown below is an example of the most typical exhaust brake installation - the inline mount. For this type of install adapters are required to seal the airflow from the exhaust brake to the exhaust pipe. They are mounted on either side of the brake and clamped into place.
Dodge 2003 and newer vehicles are the exceptions, as they are installed using a direct mount configuration. This type of install does not require adapters as one side of the brake attaches directly to the turbocharger and the other side directly to the exhaust pipe.
Pacbrake’s exhaust brake adapters are stainless steel and have machined flanges so that they are perfectly matched when connected to the exhaust brake housing. This, as well as the stainless steel V-Clamps, ensures that there is a perfect airtight seal made between all exhaust brake joints.
CAUTION: All vehicles with exhaust system upgrades will be required to use an adapter that fits precisely with the current exhaust pipe size and brake. Please inform Peak Diesel Performance about any exhaust system upgrades when ordering an exhaust brake.
The fine print
Trucks with 4" aftermarket exhaust system with HX 35 turbo require and additional adapter C11342
Trucks equipped with an aftermarket turbo other than an HX35 please contact Peak Diesel @ 877 858 7325
