Genuine OEM Audi Engine Coolant Hose, part number 4K0122445G. This hose is a vital part of the engine cooling system, responsible for circulating coolant to regulate engine temperature. It connects various components within the cooling circuit, including the coolant reservoir. Measuring approximately 19 cm in length, this hose is made from durable, heat-resistant rubber compounds. Using a genuine OEM coolant hose ensures proper fitment, resistance to high temperatures and pressures, and long-term reliability, preventing leaks and overheating issues.