K&N RX-3800 Universal X-Stream Clamp-On Air Filter: Round Tapered; 2.438 in (62 mm) Flange ID; 6.563 in (167 mm) Height; 4.5 in (114 mm) Base; 4 in (102 mm) Top Pleated filter built in top Washable and reusable Low restriction Clamp-on design