Genuine OEM Volkswagen Air Filter, part number 2N0129607M. This air filter filters dust and debris from the air entering the engine to prevent damage and ensure efficient combustion. It is located within the air intake system, typically housed in an airbox. The filter media is designed to capture contaminants while allowing optimal airflow. Genuine OEM air filters provide the exact filtration efficiency and airflow characteristics required for your engine's optimal performance and longevity.