CUMMINS 2003-2004 5.9L
6 products
Which truck are we building?
Pick your truck and we'll show only the Cummins HD Cummins 2003-2004 5.9L that fit — no sifting through parts for someone else's rig.
Tuners & Delete KitsEnhance your truck's performance.
TunesGain additional tune levels.
Full Exhaust SystemComplete turbo-back systems.
DPF Delete PipeReplace the DPF pipe in your exhaust.
EGR Delete KitExhaust Gas Recirculation removal kits.
Cold Air IntakesInject more air into your combustion chamber.
MufflerReduce emitted noise from your exhaust.
Pyro EGT KitsMonitor exhaust gas temps in real time.
Transmission TunesTunes for your transmission.
ECMFull motherboard rebuild.
AccessoriesMiscellaneous parts.
SwitchSwitch between tunes easily.
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Reads year + generation straight off your VIN — door jamb or registration.
