Genuine OEM Audi Coolant Hose, part number 4M1122157A. This hose is a critical component of the engine cooling system, responsible for transporting coolant between various engine components to maintain optimal operating temperatures. Its specific curved geometry ensures correct routing and fitment within the engine bay. Weighing approximately 0.222 kg, this hose is constructed from durable, heat-resistant rubber compounds. Choosing a genuine OEM coolant hose guarantees resistance to high temperatures and pressures, preventing leaks and ensuring the long-term reliability of the cooling system.