Aftermarket Exhaust Systems are a popular addition to any 2004.5-2007 Dodge 5.9L Diesel. Installation is typically a straight forward installation and can be completed in your driveway with simple hand tools. A performance exhaust will typically add horsepower and torque, decrease the exhaust gas temperatures (EGT's), and can even improve engine efficiency. Many exhausts are offered in either 4" or 5" diameters. Exhaust systems are typically available in stainless or aluminized steel and are available in a wide range of diameters and styles. You can find all the top exhaust brands such as MBRP, Magnaflow, AFE, Banks Power, AP Emission Technologies and more!