pacbrake c44052 kit for 2004.5-2005 cummins with auto transmission Pacbrake's DirectMount 4'' PRXB Exhaust Brake Kit Notes: All 2004 - 2005 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 for further kit information 800.663.0096. Air Actuated - Comes with Air Tank, Hose and Accessories.