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 : 88938 XA7492 CA10253 AF10253 AF1301 PA7492 A37492 46938, Kit Includes: 8x Air Filter, Kit Variations: K57-100165 K57-100328 K57-100627 K57-100914 K57-101201 K57-101581 K57-101961 K57-102341 K57-103101 K57-103481, Part Reference Numbers : 88938 XA7492 CA10253 AF10253 AF1301 PA7492 A37492 46938