The Mishimoto Dodge RAM 5.9L Cummins coolant hose kit is the perfect upgrade for the factory rubber hoses. Mishimoto silicone hoses are crafted from a combination of high-grade silicone and four layers of heat-resistant fibers to provide improved heat reduction, superior durability, and increased pressure tolerance. Old degrading coolant hoses can cause potential engine damage when they fail; avoid this by upgrading to the Mishimoto silicone coolant hose kit. The Mishimoto coolant hose kit retains factory fitment and is available in black, blue, and red. As with all other products, this hose kit includes the Mishimoto lifetime warranty.