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 : 97045 XA10596 CA12378 AF12378 AFJ004 TA21498 A21498 WA10716, Kit Includes: 12x Air Filter, Kit Variations: K57-101307 K57-101687 K57-102447 K57-102827 K57-103207 K57-103587 K57-103865 K57-103958 K57-104051 K57-104144, Part Reference Numbers : 97045 XA10596 CA12378 AF12378 AFJ004 TA21498 A21498 WA10716