Swap out the leaking radiator in your 2001-2004 Chevy/GMC 6.6L LB7 Duramax with a new durable replacement. Shop today at XDP and ensure that your radiator is up to the task and can handle the heat! Brands including XDP X-TRA Cool, Mishimoto, CSF, AFE, and Flex-A-Lite manufacture high-quality Radiators to replace the failed component on your vehicle. A radiator serves as a type of heat exchanger and as hot coolant flows through it, the outside air passes over the radiator fins allowing heat to dissipate. 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.