Washable and reusable high-performance replacement air filter, designed for street, performance, and racing use. Thanks to FCd (Full Contour design) Technology, the entire area 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 meshes. The special folding technique of the filter medium enlarges the inner radius of the pleat tips, and the resulting surfaces serve for 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 otherwise not achieve optimal filtration. Only DNA service products may be used for cleaning and oiling! Item Article Main color black Variation Replacement filter