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 : 83901 XA6120 CA10834 AF10834 AF1423 PA6120 A36120 49901, Kit Includes: 11x Air Filter, Kit Variations: K57-100282 K57-100514 K57-100806 K57-101093 K57-101277 K57-102037 K57-102417 K57-102797 K57-103177 K57-103557, Part Reference Numbers : 83901 XA6120 CA10834 AF10834 AF1423 PA6120 A36120 49901