Genuine OEM Audi Left Radiator Air Duct, part number 4H0121283B. This molded plastic component is positioned on the left side, designed to precisely channel airflow to the radiator, optimizing heat dissipation for the engine cooling system. Measuring 0.58 meters in length and weighing 0.211 kg, it is a crucial part for thermal management. Using a genuine OEM air duct ensures correct airflow dynamics and maintains the intended cooling performance, vital for engine health.