Genuine OEM Volkswagen Air Filter Element, part number 3D0129620C. This essential component is designed to filter incoming air, preventing dust, pollen, and other contaminants from entering the engine's combustion chambers. It is typically housed within the air filter box, part of the engine's intake system. The filter features a pleated paper element within a sturdy frame, measuring approximately 0.225 meters in length. Using a genuine OEM air filter ensures optimal airflow and filtration efficiency, crucial for maintaining engine performance, fuel economy, and longevity.