K&N RF-1037 Universal Clamp-On Air Filter: Round Tapered; 5 in (127 mm) Flange ID; 6.5 in (165 mm) Height; 6.5 in (165 mm) Base; 5 in (127 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