Overview of the Radiator Pipe for 2.4L Engine Models The radiator pipe in the Jeep Compass, Jeep Patriot, and Dodge Caliber equipped with the 2.4L World Engine (ED3/ED4) plays a crucial role in the vehicle’s cooling system. Also known as the coolant pipe or radiator hose pipe, this component ensures the effective flow of coolant between the engine, radiator, and …