Genuine OEM Volkswagen Engine Coolant Hose, part number 2Q0121109. This flexible hose is a vital part of the engine cooling system, responsible for circulating coolant between various components to maintain optimal engine operating temperature. Weighing 0.072 kg, it is designed to withstand high temperatures and pressures within the cooling circuit. Choosing genuine OEM ensures the correct material composition, internal diameter, and precise bends for leak-free connections and reliable coolant flow, preventing engine overheating.