Fixed Orifice Cummins and Exhaust Brakes For
2006 and 2007 Dodge Trucks equipped with 5.9L Cummins and Automatic Transmissions
2003 and Newer Dodge Trucks with 3.5” and 4” Exhaust
VEHICLES WITH AN EXISTING AIR COMPRESSOR AND AIR TANK
Getting Started
Thank you and congratulations on your purchase of a Pacbrake Direct Mount® exhaust retarder.
Do not install the kits listed below on 2003 model year Dodge trucks built up to June 27th 2005 with
automatic transmissions without a transmission controller. Pacbrake has kits for these vehicles that
include an automatic transmission controller.
Contact Pacbrake’s Customer Service @ 800.663.0096 for more information.
Pacbrake kit information and applications covered in this manual:
C44031 Pacbrake kit is a PRXB design for 2003 model year and newer Dodge trucks built up to January
4th 2004 with a Cummins 5.9L and manual shift transmission only.
C44037 Pacbrake kit is a PRXB design for Dodge trucks built after January 5th, 2004 and newer with
Cummins 5.9L diesel engines and a manual shift transmission. This kit also fits on Dodge trucks built after
June 27th, 2005 with Cummins 5.9L 610 ft-lbs of torque and automatic transmissions, transmission
controller is not required on trucks built after June 27th, 2005.
Pacbrake PRXB exhaust brakes require a minimum of 100PSI to fully close the butterfly valve, ensure your
pressure switch will maintain pressure above 100PSI.
Free Download 2003–2007 Dodge Trucks equipped with 5.9L and Manual Transmissions
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