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 : 97115 XA11676 CA12372 AF301J WA11042, Kit Includes: 12x Air Filter, Kit Variations: K57-101387 K57-101767 K57-102527 K57-102907 K57-103287 K57-103667 K57-103897 K57-103990 K57-104083 K57-104176 KFL-101854 KFL-102171 KFL-102730 KFL-103105 KFL-103284 KFL-103462, Part Reference Numbers : 97115 XA11676 CA12372 AF301J WA11042