In Line Mount 4" inch PRXB High Performance Exhaust Brake Kit

Features:

• Fits 2007.5-2012 RAM 6.7L Cummins
• Designed for 68RFE automatic transmission
• 4 inch in line mount design
• PRXB delivers 50 percent more braking
• Strong holdback at 1400-1800 RPM
• Spring regulated overpressure protection
• Patented non contacting butterfly valve
• Unrestricted exhaust flow when disengaged
• Arcor nitride coated internal components
• Hard anodized aluminum and stainless construction
• Includes HP325 onboard air compressor
• Complete kit with tank and fittings

Own The Downhill With Confident Braking Power On Demand

If you spend any time towing with your 2007.5-2012 RAM 2500 or 3500, you know how quickly a steep grade can get your attention. The PacBrake C44038 4 inch PRXB Exhaust Brake Kit is built to give you that extra layer of control when it matters most. With up to 50 percent more braking power at lower RPM, it delivers strong holdback right in the 1400-1800 range where most daily driving and towing happens. That means less reliance on your service brakes and more confidence when you are hauling a trailer through rolling hills or mountain passes. Additionally, when the brake is switched off, exhaust flow returns to normal so your truck keeps its full power and drivability. You are not adding restriction during acceleration, only control when you need it. For drivers who want safety, peace of mind, and better downhill management, this PRXB system is a smart investment.

Precision Engineered PRXB System Built For Cummins Durability

The C44038 features PacBrake proven PRXB technology, engineered specifically for the 6.7L Cummins and 68RFE automatic transmission combination. Its spring controlled and pressure regulated mechanism helps prevent engine overpressure while maintaining optimal backpressure for effective braking. A patented 90 degree non contacting butterfly valve maximizes braking performance while reducing the risk of sticking in high heat exhaust conditions. Furthermore, the housing and internal components are treated with an Arcor nitride coating that improves wear resistance, corrosion protection, and surface lubricity. Precision machined mating surfaces eliminate the need for gaskets, reducing potential leak points and simplifying installation. This in line mount 4 inch system includes the HP325 onboard air compressor, 0.5 gallon air tank, 25 foot coiled hose, and all required fittings for a complete setup. Designed for 2007.5-2012 RAM 2500 and 3500 6.7L Cummins trucks, it delivers application specific performance rather than a generic one size fits all solution.

Fitment: 2007.5, 2008, 2009, 2010, 2011, 2012 Dodge RAM 2500/3500 6.7L Cummins 68RFE AT

Notes:

• Fits 2007.5-2012 RAM 2500/3500 6.7L Cummins
• Designed for 68RFE automatic transmission only
• Requires 4 inch exhaust system
• In line mount configuration
• Includes onboard air compressor system
• Includes 0.5 gallon air tank
• Air actuated exhaust brake operation
• No separate switch pack included
• No transmission controller required
• Regular lubrication recommended for longevity