Genuine OEM Volkswagen Coolant Return Hose, part number 6C0122101D. This critical component is responsible for returning cooled fluid from the radiator back into the engine's cooling system, maintaining proper operating temperatures. It is positioned as a primary connection to the radiator. Weighing 0.85 kg and measuring 0.45m long, this genuine OEM hose is manufactured from specific materials to withstand high temperatures and pressures, ensuring leak-free performance and correct routing geometry for long-term reliability.