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 : 93898 XA10584 CA12075 AF12075 TA21361 A21361 WA10424, Kit Includes: 10x Air Filter, Kit Variations: K57-101927 K57-102307 K57-102687 K57-103067 K57-103447 K57-103827 K57-103920 K57-104013 K57-104106 K57-104199, Part Reference Numbers : 93898 XA10584 CA12075 AF12075 TA21361 A21361 WA10424