K&N RF-1029 Universal Clamp-On Air Filter: Round Tapered; 3.875 in (98 mm) Flange ID; 7 in (178 mm) Height; 7.5 in (191 mm) Base; 5.125 in (130 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