Elevate your RAM 6.7L Cummins 2007.5+ cooling system with the Mishimoto Top Heater Hose Upgrade. Specifically designed to replace the leak-prone heater hose quick-disconnect at the engine, this upgrade features an O-ring-less, -10AN connection for improved reliability. Say goodbye to coolant leaks and hello to seamless coolant flow.----With easy installation and a perfect fit, the Mishimoto 2007.5+ RAM 6.7L Cummins Top Heater Hose Upgrade is a must-have for Cummins enthusiasts looking to enhance their cooling system's durability. Like all our RAM 6.7L Cummins products, this top heater hose upgrade is backed by the Mishimoto Lifetime Warranty.