K&N RU-2430 3 Inlet 5 Inch Tall Universal Round Straight Rubber Air Filter Designed to increase horsepower and acceleration; 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 Flange inside diameter / Flange length: 3.000" / 0.625"