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 : 83143 AF10485 AF1482 PA5813 A35813 49143, Kit Includes: 8x Air Filter, Kit Variations: K57-100185 K57-100592 K57-100881 K57-101168 K57-101479 K57-101859 K57-102239 K57-102619 K57-103379 K57-103759, Part Reference Numbers : 83143 AF10485 AF1482 PA5813 A35813 49143