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 : 83014 XA6168 CA11048 AF11048 AF1531 PA6168 A16168 49014, Kit Includes: 11x Air Filter, Kit Variations: K57-100170 K57-100330 K57-100629 K57-100916 K57-101235 K57-101995 K57-102375 K57-102755 K57-103135 K57-103515, Part Reference Numbers : 83014 XA6168 CA11048 AF11048 AF1531 PA6168 A16168 49014