Exhaust Brakes will help your 2003-2004 Dodge 5.9L Cummins slowdown when it's critically for safety while also helping to reduce wear on your service brakes. Available for stock and aftermarket turbochargers, turbo-mounted and remote mount brakes will fit in a wide variety of applications. Electronic brakes are used in late model pickups and function by using the existing factory-equipped VGT turbocharger. Mechanical brakes use a throttle style butterfly valve to limit exhaust flow and create engine retarding horsepower. We carry premium products from Banks, BD-Power, and Pacbrake to fit your needs.