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 : 97013 XA11674 CA12371 TA21482 A21482 WA10937, Kit Includes: 12x Air Filter, Kit Variations: K57-101388 K57-101768 K57-102528 K57-102908 K57-103288 K57-103668 K57-103898 K57-103991 K57-104084 K57-104177 KFL-101855 KFL-102172 KFL-102731 KFL-103104 KFL-103283 KFL-103463, Part Reference Numbers : 97013 XA11674 CA12371 TA21482 A21482 WA10937