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 : 93853 XA10597 CA12167 AF138J PA99223 A31399 WA9790, Kit Includes: 10x Air Filter, Kit Variations: K57-100073 K57-100395 K57-100691 K57-100978 K57-101706 K57-102086 K57-102466 K57-102846 K57-103226 K57-103606, Part Reference Numbers : 93853 XA10597 CA12167 AF138J PA99223 A31399 WA9790