K&N RU-3101HBK Universal Clamp-On Air Filter: Round Tapered; 6 in (152 mm) Flange ID; 7.5 in (191 mm) Height; 7.5 in (191 mm) Base; 5.25 in (133 mm) Top High air flow with excellent filtration Oil-free air filter Black synthetic media Washable and reusable