High Flow Washable Air Filters. Lower Exhaust Temperature. Increase HP and Fuel Mileage.Reference: Baldwin: PA2863Fleet Guard: AF4878Luber Finer: LAF1878Donaldson: P527484, EAF5067Wix: 46433NAPA: 6433Fits:Chevrolet:Ford:Freightliner:GM:John Deere:Kenworth:Peterbilt:Sterling:We also offer replacement Fleet Air Wrap 2863 *Don't Forget Your Klotz Oil*