Replace the clogged or leaking radiator in your 2003-2004 Dodge 5.9L Cummins with a high-quality option. Find high-quality replacement Radiators from brands such as XDP X-TRA Cool, Mishimoto, CSF, AFE, and Flex-A-Lite. Your stock radiator may begin to leak, can become clogged, or the plastic inlets or outlets can crack due to years of constant clamp pressure. A radiator is a type of heat exchanger that has hot coolant flowing through it, the outside air passes over the radiator fins and allows heat to dissipate. Shop now at XDP and ensure you replace your radiator with a unit that can stand up to the heat!