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 : 93873 XA10651 CA12166 AF12166 AF233J TA41392 A41392 WA10718, Kit Includes: 2x Air Filter, Kit Variations: K57-101553 K57-101933 K57-102313 K57-102693 K57-103073 K57-103453 K57-103833 K57-104037 K57-104130 K57-104223, Part Reference Numbers : 93873 XA10651 CA12166 AF12166 AF233J TA41392 A41392 WA10718