Genuine OEM Audi Engine Coolant Hose, part number 1EA121036F. This critical component is responsible for transporting engine coolant between various parts of the cooling system, maintaining optimal engine operating temperatures. It is an integral part of the engine's thermal management. Weighing 0.153 kg and measuring 0.24m in length, this hose is engineered for precise fitment and durability. Using a genuine OEM coolant hose ensures correct routing geometry, resistance to temperature and pressure fluctuations, and compatibility with specific coolant formulations, preventing leaks and system failures.