Genuine OEM Audi Upper Radiator Air Guide Duct, part number 4M0121285BL. This component is designed to precisely direct air flow to the upper section of the radiator, optimizing its cooling performance. It is installed above the radiator assembly. Made from durable black plastic, it measures approximately 0.828 meters in length. Using a genuine OEM air guide ensures proper fitment and aerodynamic efficiency, crucial for maintaining engine temperature and preventing overheating.