K&N RC-4780 Universal Clamp-On Air Filter: Round Tapered; 4 in (102 mm) Flange ID; 9.5 in (241 mm) Height; 6.625 in (168 mm) Base; 5.25 in (133 mm) Top Designed to increase horsepower and acceleration Hundreds of sizes and shapes for most applications High air flow with excellent filtration Clamp-on washable and reusable air filter Pliable flanges absorb vibration and can be stretched up to 1/16 In. to fit in-between sizes