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 : 87412 XA5440 CA9073 AF9073 AF1165 PA5440 A35440 42412, Kit Includes: 11x Air Filter, Kit Variations: K57-100035 K57-100477 K57-100772 K57-101059 K57-101408 K57-102168 K57-102548 K57-102928 K57-103308 K57-103688 KFL-100212 KFL-100850 KFL-101293 KFL-101599 KFL-102203 KFL-102762, Part Reference Numbers : 87412 XA5440 CA9073 AF9073 AF1165 PA5440 A35440 42412