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 : 88902 XA5431 CA9492 AF9492 AF1163 PA5431 A35431 46902, Kit Includes: 12x Air Filter, Kit Variations: K57-100261 K57-100531 K57-100823 K57-101110 K57-101246 K57-101626 K57-102386 K57-102766 K57-103146 K57-103526, Part Reference Numbers : 88902 XA5431 CA9492 AF9492 AF1163 PA5431 A35431 46902