Spectre Performance HPR9883W Universal Clamp-On Air Filter: Round Tapered; 3.5 in (89 mm) Flange ID; 10.719 in (272 mm) Height; 6 in (152 mm) Base; 5.125 in (130 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