PRXB Exhaust Brake Kit – C44030 – DirectMount 4 Inch Exhaust (Air Actuated) " All These are new Factory OE

These are new Factory OE injectors that fit all Cummins 24 valve engines 1998

2011 - 2023 GMC Sierra 3500 HD

Part Number: 1045778

Part Number: 0986435519SE-IIS

This allows up to 100 percent of the retarding force to be transferred while in 3rd and 4th gear

PRXB Exhaust Brake Kit – C44030 – DirectMount 4 Inch Exhaust (Air Actuated) " All These are new Factory OEProduct Description Provides 50 percent More Braking Power at Lower RPM's. PRXB gives you the best holdback in the 1400 1800 RPM range (where you typically drive). The spring controlled pressure regulated mechanism on the exhaust brakes protects against engine overpressure. When the brake is deactivated, exhaust flow is unrestricted and won't interfere with power output. Patented 90 degree Non contacting Butterfly Valve is specially engineered to