Genuine OEM Audi Auxiliary Radiator Air Guide, part number 4H0121673D. This component is designed to channel and direct airflow efficiently to the auxiliary radiator, optimizing its cooling performance. It is installed on the left side of the auxiliary radiator assembly. Made from durable black plastic, it weighs 0.14 kg. Choosing a genuine OEM air guide ensures precise fitment and effective air management, which is crucial for maintaining the vehicle's overall thermal stability.