Genuine OEM Audi Engine Coolant Hose, part number 5WA122051D. This hose is designed to transport vital coolant between various engine components, playing a critical role in maintaining optimal engine operating temperature. It is a flexible rubber hose, approximately 0.43 meters in length. Choosing a genuine OEM coolant hose ensures the correct material composition, pressure resistance, and routing geometry for reliable, leak-free performance and long service life.