MBRP Armor Lite 4" Aluminized Exhaust Down Pipe 03-04 Dodge 5.9L Cummins

Did you know that the down pipe on the 2003 through early 2004 Cummins is actually only 3.5" in diameter. They didn't upgrade to a 4" down pipe from the factory until the release of the 2004.5 models. Gain exhaust flow for improved power and lower EGT's with this 4" downpipe from MBRP.