K&N RC-5040 Universal Clamp-On Air Filter: Oval Straight; 3.5 in (89 mm) Flange ID; 5.5 in (140 mm) Height; 8.5 in x 5.25 in (216 mm x 133 mm) Base; 6.25 in x 4 in (159 mm x 102 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