2003-2004 Ram 5.9L Cummins Engine Upgrades

If you're still running with the old, but faithful 2003-2004 Dodge 5.9L Cummins engine, you'll know a thing or two about taking care of what's yours. Be sure to continuously make that 5.9L Cummins engine on your Ram 2500 and Ram 3500 run efficiently with any of our featured engine and performance upgrades! Give your engine a new set of lungs with a new durable cold air intake system with reusable filter media. Pull out more performance power with a new aftermarket tuner! Achieve stellar acceleration off the line with a turbocharger. Whatever your plan, you can find a number of engine upgrades available for you here at Alligator Performance. Ram Cummins Fitments: 2003, 2004 Ram 5.9L Cummins. Submodel Fitments: Tradesman, Laramie, Laramie Longhorn, Big Horn, Limited, Lone Star, Power Wagon. Some exceptions apply, please see individual product pages for specific fitments.