Genuine OEM Volkswagen Radiator Fan, part number 2HJ121203D. This fan draws air through the radiator to dissipate heat from the coolant, ensuring the engine does not overheat. It is located in the front of the radiator assembly. The fan is designed for efficient airflow and quiet operation. Genuine OEM radiator fans are built to precise standards for durability and consistent performance, crucial for preventing engine damage due to overheating.