Washable and reusable high-performance replacement air filter, designed for street, performance, and racing use. Thanks to FCd (Full Contour design) Technology, the entire surface of the air filter box inlet is used as a filter medium. This increases the filter area by 20-80%, increases airflow, and thus boosts engine performance. The increased airflow also reduces fuel consumption. The DNA filter medium consists of four layers of special DNA cotton fabric held together by two coated aluminum wire mesh screens. The special pleating technique of the filter medium increases the inner radius of the pleat tips, and the resulting surfaces provide additional filtration. Care instructions: The filter should be cleaned and oiled once a year or every 15,000 - 30,000 km. The filter must not be used unoiled, as the filter medium will not achieve optimal filtration performance. Only DNA service products may be used for cleaning and oiling! Item Article Main color black Variation Replacement filter