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 : 83390 XA6150 CA11041 AF11041 AF1474 PA6150 A26150 49390, Kit Includes: 4x Air Filter, Kit Variations: K57-100317 K57-100567 K57-101143 K57-101473 K57-101853 K57-102233 K57-102613 K57-102993 K57-103373 K57-103753 KFL-100970 KFL-100971 KFL-101106 KFL-101733 KFL-102299 KFL-102858, Part Reference Numbers : 83390 XA6150 CA11041 AF11041 AF1474 PA6150 A26150 49390