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 : 83570 XA6139 CA10999 AF10999 AF1562 PA6139 A26139 49570, Kit Includes: 9x Air Filter, Kit Variations: K57-100158 K57-100379 K57-100678 K57-100965 K57-101470 K57-101850 K57-102230 K57-102610 K57-102990 K57-103370, Part Reference Numbers : 83570 XA6139 CA10999 AF10999 AF1562 PA6139 A26139 49570