Genuine OEM Audi Radiator Core Support Air Duct, part number 4M0121287B. This component is engineered to precisely direct airflow to the radiator core support, ensuring optimal cooling efficiency for the engine. Proper airflow management is crucial for maintaining ideal engine operating temperatures and preventing overheating. Constructed from durable, heat-resistant black plastic, this genuine OEM air duct guarantees a perfect fit and maintains the aerodynamic integrity of the cooling system, which is essential for long-term engine health and performance.