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 : 83156 XA5601 CA10083 AF10083 AF1313 PA5601 A35601 49156, Kit Includes: 8x Air Filter, Kit Variations: K57-100079 K57-100521 K57-100813 K57-101100 K57-101433 K57-101813 K57-102193 K57-102573 K57-103333 K57-103713, Part Reference Numbers : 83156 XA5601 CA10083 AF10083 AF1313 PA5601 A35601 49156