Airaid 721-440 Universal Clamp-On Air Filter: Oval Tapered; 3.5 in (89 mm) Flange ID; 5.25 in (133 mm) Height; 8.5 in x 5.25 in (216 mm x 133 mm) Base; 6 in x 3.75 in (152 mm x95 mm) Top Superior filtration Increases performance and mileage Washable and reusable Hand-built using the finest materials Lifetime no hassle warranty