Genuine OEM Audi Front Coolant Hose, part number 80A121081S. This flexible hose is a critical component of the engine cooling system, responsible for transporting coolant to various engine components. Positioned at the front of the engine, it measures approximately 0.3 meters in length and weighs 0.044 kg. Using a genuine OEM coolant hose ensures the correct material composition, precise routing, and resistance to thermal cycling, which are crucial for preventing leaks, maintaining optimal engine temperature, and ensuring the longevity of the cooling system.