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 : 88081 XA5089 CA8205 AF8205 AF1048 PA5089 A25089 46081, Kit Includes: 10x Air Filter, Kit Variations: K57-100216 K57-100524 K57-100816 K57-101103 K57-101793 K57-102173 K57-102553 K57-102933 K57-103313 K57-103693, Part Reference Numbers : 88081 XA5089 CA8205 AF8205 AF1048 PA5089 A25089 46081