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 : 83073 XA10003 CA11450 AF11450 AF1559 PA6297 PA9915 A46297 49073, Kit Includes: 2x Air Filter, Kit Variations: K57-100460 K57-100756 K57-101043 K57-101266 K57-101646 K57-102026 K57-102406 K57-102786 K57-103166 K57-103546 KFL-100346 KFL-100643 KFL-101046 KFL-101721 KFL-102000 KFL-102559, Part Reference Numbers : 83073 XA10003 CA11450 AF11450 AF1559 PA6297 PA9915 A46297 49073