EPDM radiator hoses are made of flexible and durable rubber material. They can withstand high temperatures and pressures generated by the engine. These hoses are designed to carry hot coolant from the engine to the radiator and cooler coolant back to the engine. They may also be wrapped with cloth for added protection. Regular inspection is important to detect any signs of wear such as cracks, bulges, or leaks. Damaged hoses must be replaced promptly to prevent coolant leakage and engine damage.