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 : 83590 XA6273 CA11222 AF11222 AF1517 PA6273 A26273 49590, Kit Includes: 11x Air Filter, Kit Variations: K57-100054 K57-100481 K57-100776 K57-101063 K57-101455 K57-102215 K57-102595 K57-102975 K57-103355 K57-103735, Part Reference Numbers : 83590 XA6273 CA11222 AF11222 AF1517 PA6273 A26273 49590