Mishimoto silicone radiator hoses designed for the 2003-2004 Dodge Ram 5.9L Cummins Diesel are designed as a direct replacement for your OEM rubber hoses. Mishimoto silicone hoses are crafted using a combination of high-grade silicone and heat-resistant embedded fibers that provide extreme durability, markedly better heat reduction and increased pressure tolerance. Upgrade your cooling system in style with a choice of black, blue or red Mishimoto silicone hoses.