Genuine OEM Volkswagen Coolant Hose, part number 2E0122447C. This hose is a critical component in the engine cooling system, responsible for circulating coolant between the expansion tank and the engine to regulate temperature. Its specific routing and connections ensure efficient heat transfer and prevent overheating. Weighing 0.101 kg, it is designed to withstand high temperatures and pressures. Choosing genuine OEM ensures the correct routing geometry and material composition for long-term resistance to coolant chemicals and temperature fluctuations.