Spectre Performance HPR9888B Universal Clamp-On Air Filter: Round Tapered; 2.75 in (70 mm) Flange ID; 6.906 in (175 mm) Height; 6.063 in (154 mm) Base; 5.156 in (131 mm) Top Engineered for increased flow and greater performance Factory pre-oiled and ready to use Quality materials used throughout including washable synthetic filter media, urethane, and steel mesh Clamp-on Style Air Filter Use P/N HPR4820 Accucharge kit to clean and re-oil the filter