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 : 88320 XA5105 CA5350 CA9007 AF5350 AF9007 AF412 PA5105 A45105 46320, Kit Includes: 11x Air Filter, Kit Variations: K57-100081 K57-100346 K57-100645 K57-100932 K57-101210 K57-101970 K57-102350 K57-102730 K57-103110 K57-103490, Part Reference Numbers : 88320 XA5105 CA5350 CA9007 AF5350 AF9007 AF412 PA5105 A45105 46320