Keeps damaging particles from entering the engine and causing increased engine wear, Improves engine response time Protects the operational performance of your engine, Reduces ecological footprint through fuel economy, Boosts fuel economy by 6% to 11%, 98% Efficiency Against Rocks And Other Debris on the Road, Part Reference Numbers : 87825 XA5370 CA8922 AF8922 AF1071 PA5370 A35370 42825, Kit Includes: 6x Air Filter, Kit Variations: K57-100101 K57-100600 K57-100888 K57-101175 K57-101289 K57-101669 K57-102049 K57-102809 K57-103189 K57-103569, Part Reference Numbers : 87825 XA5370 CA8922 AF8922 AF1071 PA5370 A35370 42825