K&N RU-1822 Universal Clamp-On Air Filter: Oval Straight; 2 in (51 mm) Flange ID; 2.75 in (70 mm) Height; 4 in x 3 in (102 mm x 76 mm) Base; 3.5 in x 2.5 in (89 mm x 64 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