Airaid 701-421 Universal Clamp-On Air Filter: Round Tapered; 3.5 in (89 mm) Flange ID; 9 in (229 mm) Height; 6 in (152 mm) Base; 4.625 in (117 mm) Top Superior filtration Increases performance and mileage Washable and reusable Hand-built using the finest materials Lifetime no hassle warranty