Genuine OEM Audi Coolant Hose, part number 5C0122051AC. This hose transports coolant within the engine cooling system, facilitating heat exchange and maintaining optimal engine operating temperature. It connects the radiator to another component in the cooling circuit. Weighing 0.48 kg and measuring 0.59 m in length, this hose is designed for durability and resistance to temperature and pressure. Genuine OEM hoses provide the correct routing geometry, material composition, and clamp points for a leak-free and reliable cooling system.