Genuine OEM Audi Engine Coolant Hose, part number 1EA121157Q. This multi-branched hose is a vital component of the engine cooling system, responsible for transporting coolant between various engine and radiator components. It ensures efficient heat exchange and maintains optimal engine operating temperature. Weighing approximately 0.732 kg, this hose is designed for precise routing and connection points. Using a genuine OEM coolant hose guarantees the correct material composition, pressure resistance, and exact fitment, preventing leaks and maintaining the integrity of the cooling system.