Genuine OEM Volkswagen Heater Core Hose, part number 5C0122073C. This left-side hose is responsible for circulating hot engine coolant to the vehicle's heater core, providing warmth to the cabin. Constructed from durable rubber, it features a protective silver heat shield to manage thermal exposure within the engine bay. Weighing approximately 0.153 kg and measuring 0.27 meters in length, its specific molded shape ensures correct routing and connection. Using a genuine OEM hose guarantees the precise material composition, heat resistance, and connection integrity, preventing leaks and ensuring efficient operation of the heating system.