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 : 83184 XA5638 CA10161 AF10161 AF2400 PA5638 A35638 49184, Kit Includes: 7x Air Filter, Kit Variations: K57-100052 K57-100573 K57-100862 K57-101149 K57-101212 K57-101592 K57-101972 K57-102352 K57-102732 K57-103492, Part Reference Numbers : 83184 XA5638 CA10161 AF10161 AF2400 PA5638 A35638 49184