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 : 518529 95296 XA10393 XA10394 CA11948 AF11948 AF1660 A28164 WA10270 WA10296, Kit Includes: 10x Air Filter, Kit Variations: K57-100119 K57-100390 K57-100686 K57-100973 K57-101808 K57-102188 K57-102568 K57-102948 K57-103328 K57-103708, Part Reference Numbers : 518529 95296 XA10393 XA10394 CA11948 AF11948 AF1660 A28164 WA10270 WA10296