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, Pacbrake’s 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.

Pacbrake PRXB Cut-A-WayClick to Enlarge

PACBRAKE PRXB EXHAUST BRAKE APPLICATION GUIDE
DODGE TRUCKS WITH STANDARD TRANSMISSIONS
2005-2007
Application Exhaust Description Part# SwitchPac(Optional) ECM Bypass(Optional)

2005-2007

5.9L 24 Valve (built up to Jul 26, '04 - Jun 27, '05

Stock DirectMount 4" PRXB Exhaust Brake Kit with Max Flow Design (Air Actuated). Comes with Air Tank, Hose, & Accessories. C44045 C18042 C20141

 

Stock DirectMount 4" PRXB Exhaust Brake Kit with Max Flow Design (Air Actuated). For Vehicles with existing onboard air. C44037 C18042 C20141
  Stock DirectMount 4" PRXB High Performance Exhaust Brake Only. UPGRADE. Replaces Fixed Orifice Exhaust Brake. C40111 C18042 C20141
  Afttermarket InlineMount 5" PRXB High Performance Exhaust Brake Kit (Air Actuated). Comes with Air Tank, Hose, & Accessories C44047 C18042 C20141

2006-2007

5.9L 24 Valve(built after Jun 27 '05

Stock DirectMount 4" PRXB High Performance Exhaust Brake Kit (Air Actuated). Comes with Air Tank, Hose, & Accessories. C44045 C18042 N/A
  Stock DirectMount 4" PRXB High Performance Exhaust Brake Kit (Air Actuated). For Vehicles with Existing Onboard Air. C44037 C18042 N/A
  Stock DirectMount 4" PRXB High Performance Exhaust Brake ONLY. UPGRADE. Replaces Fixed Orifice Exhaust Brake C40111 C18042 N/A
  Aftermarket InLineMount 5" PRXB High Performance Exhaust Brake Kit (Air Actuated). Comes with Air Tank, Hose, & Accessories. C44047 C18042 N/A

NOTE:  All above 2005-2007 kits will NOT work with Banks Turbo Back Monster Exhaust. However, they will work with Banks Cat Back Monster Exhaust. Applications for aftermarket turbo chargers, please contact Pacbrake, 800.663.0096.

DODGE TRUCKS WITH AUTOMATIC TRANSMISSIONS

2005-2007

APPLICATION

EXHAUST DESCRIPTION PART#

TRANSMISSION

CONTROLLER

2005

5.9L 24 Valve  (built  Jul 26, '04 - Jun 27, '05)

Stock DirectMount 4" PRXB Exhaust Brake Kit with MAX FLOW Design (Air Actuated). Comes with Air Tank, Hose & Accessories. C44052 Included
  Stock DirectMount 4" PRXB High Performance Exhaust Brake Kit (Air Actuated). For vehicles with Existing Onboard Air. C44033 Included

 

 

Stock DirectMount 4" PRXB High Performance Exhaust Brake Kit  ONLY. UPGRADE. Replaces Fixed Orifice Exhaust Brake. C40111 Not Included
  Aftermarket InLineMount 5" PRXB High Performance Exhaust Brake Kit (Air Actuated). Comes with Air Tank, Hose & Accessories. C44051 Included

2006-2007

5.9L 24 Valve (built after Jun 27, '05

Stock DirectMount 4" PRXB High Performance Exhaust Brake Kit (Air Actuated). Comes with Air Tank, Hose, & Accessores. C44045

Not Included

(Not required)

  Stock DirectMount 4" PRXB High Performance Exhaust Brake Kit (Air Actuated). For Vehicles with Existing Onboard Air. C44037

Not Included

(Not required)

  Stock DirectMount 4" PRXB High Performance Exhaust Brake ONLY. UPGRADE. Replaces Fixed Orifice Exhaust Brake. C40111

Not Included

(Not required)

  Aftermarket InLineMount 5" PRXB High Performance Exhaust Brake Kit (Air Actuated). Comes with Air Tank, Hose, & Accessories. C44047

Not Included

(Not required)

NOTE:  All above 2005-2007 kits will NOT work with Banks Turbo Back Monster Exhaust. However, they will work with Banks Cat Back Monster Exhaust. Applications for aftermarket turbo chargers, please contact Pacbrake, 800.663.0096.

PACBRAKE'S SWITCH-PAC

Designed specially for manual transmission vehicles, Pacbrake’s Switch-Pac is a shifter-mounted ON/OFF switch. The convenient fingertip control location provides easy access for exhaust brake activation. The Switch-Pac can operate not only your vehicle's exhaust brake, but other vehicle accessories such as Pacbrake's air horns.


Pacbrake SwitchPacPacbrake SwitchPac