Genuine OEM Volkswagen Engine Coolant Hose, part number 5QA819350. This hose is a vital component in the engine's cooling system, responsible for circulating coolant, particularly to and from the auxiliary heater. It ensures proper heat exchange and temperature regulation. With a length of approximately 0.53 meters, this hose is designed for precise routing. Choosing a genuine OEM coolant hose guarantees correct material composition for heat and pressure resistance, exact routing geometry, and leak-free connections, crucial for engine longevity and heating system efficiency.