K&N RU-3103HBK Universal Clamp-On Air Filter: Round Tapered; 2.75 in (70 mm) Flange ID; 5.25 in (133 mm) Height; 6 in (152 mm) Base; 5.25 in (133 mm) Top High air flow with excellent filtration Oil-free air filter Black synthetic media Washable and reusable