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 : 88924 XA5566 CA9944 AF9944 AF1257 PA5566 A25566 46924, Kit Includes: 2x Air Filter, Kit Variations: K57-100466 K57-100761 K57-101048 K57-101295 K57-101675 K57-102055 K57-102435 K57-102815 K57-103195 K57-103575, Part Reference Numbers : 88924 XA5566 CA9944 AF9944 AF1257 PA5566 A25566 46924