K&N HIGH FLOW COLD AIR INTAKE FILTER, RED -- 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; 96 to 99 percent filtration efficiency; 6 in. height, 7.5 in. base outside diameter, 6 in. flange inside diameter, 0.63 in. flange length, 4.5 in. top outside diameter; Oiled element; Round tapered style; Chrome metal end cap; Made of multiple interwoven layers of surgical cotton gauze; Increases horsepower and acceleration while providing excellent filtration; Constructed with ultra-strong molded pliable rubber flanges which absorb vibration; Allows secure attachment; Can be stretched up to 0.06 in. or 1.5 mm to fit in-between sizes; Washable and reusable.