2003-2004 Ram 2500/3500 5.9L Cummins Injection Pumps

The stock CP3 fuel pump on your 2003-2004 Ram 5.9L Cummins build works great for basic everyday applications, but you can get even more out of your fuel system by investing in an aftermarket upgrade right here at Alligator Performance! Whether you're looking for a simple performance boost or a complete conversion kit, you'll be sure to find exactly what you need from our selection of CP3s, Dual pump kits, pump accessories and more. 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.