Mishimoto has released a performance aluminum radiator for the 2001 - 2005 ChevroletGMC 6.6L Duramax.Mishimoto performance radiators are manufactured from high - quality aircraft - grade aluminum with a 100 - percent aluminum core and polished end tanks.The Mishimoto 6.6L Duramax performance radiator offers increased cooling efficiency, and the all - aluminum TIG - welded construction provides a rugged design that can take the abuse of any environment or terrain.Pair your Mishimoto 6.6L Duramax aluminum radiator with our silicone coolant hose kit for the ultimate in cooling performance and reliability.As with all our products, this radiator is protected by the Mishimoto lifetime warranty.