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 : 83023 XA5789 CA10497 AF10497 AF1403 PA5789 A35789 49023, Kit Includes: 7x Air Filter, Kit Variations: K57-100209 K57-100428 K57-100724 K57-101011 K57-101322 K57-101702 K57-102082 K57-102462 K57-102842 K57-103602, Part Reference Numbers : 83023 XA5789 CA10497 AF10497 AF1403 PA5789 A35789 49023