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 : 88799 XA10664 XA4838 CA7620 CA8768 AF8768 AF2318 PA4838 A34838 46799, Kit Includes: 9x Air Filter, Kit Variations: K57-100300 K57-100497 K57-100789 K57-101076 K57-101420 K57-101800 K57-102180 K57-102560 K57-102940 K57-103320, Part Reference Numbers : 88799 XA10664 XA4838 CA7620 CA8768 AF8768 AF2318 PA4838 A34838 46799