Those looking to turn your 5.9L Cummins into a powerhouse that can handle anything thrown its way, check out our Engine & Performance upgrades! When it comes to every aspect of performance, from cooling upgrades to free flow pipes and intakes, we've got your truck covered. We offer tuners & modules, oil pans, valve covers, and even high-performance crate engines, Alligator Performance is sure to have what you need in order to upgrade your Ram 5.9L Cummins. Whether you're looking to add more power, reliability or durability, we have you covered at Alligator Performance. Pair your new engine upgrades with our selection of top tierTurbo Upgrades! Ram Cummins Fitments: 1998, 1999, 2000, 2001, 2002 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.