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 : XA5569 CA10071 AF10071 AF1274 PA5569 A45569 49136, Kit Includes: 6x Air Filter, Kit Variations: K57-100093 K57-100475 K57-100770 K57-101057 K57-101252 K57-101632 K57-102012 K57-102772 K57-103152 K57-103532, Part Reference Numbers : XA5569 CA10071 AF10071 AF1274 PA5569 A45569 49136