Genuine OEM Audi Engine Coolant Hose with Heat Shield, part number 5N0122073L. This hose is an integral part of the engine cooling system, responsible for circulating coolant to maintain optimal engine operating temperatures. It features an integrated heat shield to protect the hose from high engine bay temperatures, ensuring durability and consistent performance. Choosing genuine OEM ensures the correct material composition, routing geometry, and heat protection, critical for preventing leaks and maintaining efficient engine cooling.