K&N Motorcycle Air Filter + Oil Filter Combo 2014 Arctic Cat Wildcat 4X AC-1012 + KN-621 Designed to provide increased horsepower and acceleration Specifically developed for Off-Road, Motocross, ATVs, UTVs and Side by Sides Pleated cotton media provides a large filtration area offering low restriction, high-capacity and long service intervals Multiple layers of woven cotton gauze media offers excellent filtration Fits directly into OEM air box with application specific sealing bead ensuring a precise fit