The 6.7L Weldless Dual Radiator Coolant Y-Pipe replaces the weak plastic coolant Y-Pipe in your 2013-2019 Ram 6.7L Cummins. A plastic coolant Y-Pipe is used in the routing of the coolant hoses due to the 2013-2019 Ram trucks having a dual radiator cooling system. When the factory Y-Pipe fails, it causes coolant leaks that can spray down the engine bay, and also cause overheating conditions.