Genuine OEM Volkswagen Air Filter Cartridge, part number 3D0129620E. This air filter cartridge is designed to remove contaminants such as dust, dirt, and insects from the air entering the engine. It is located within the air cleaner housing. It features a pleated paper media that provides high filtration efficiency and allows for optimal airflow. Genuine OEM air filters are crucial for protecting the engine from abrasive particles and ensuring consistent performance.