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 : 83012 88914 XA5592 CA9997 AF9997 AF1280 PA4197 PA5592 A35592 46914 49012, Kit Includes: 5x Air Filter, Kit Variations: K57-100125 K57-100479 K57-100774 K57-101274 K57-101654 K57-102034 K57-102414 K57-102794 K57-103174 K57-103554, Part Reference Numbers : 83012 88914 XA5592 CA9997 AF9997 AF1280 PA4197 PA5592 A35592 46914 49012