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 : 83013 XA10175 CA9800 AF9800 AF1595 PA9910 TA38213 A38213 49013, Kit Includes: 5x Air Filter, Kit Variations: K57-100032 K57-100356 K57-100655 K57-101280 K57-101660 K57-102040 K57-102420 K57-102800 K57-103180 K57-103560, Part Reference Numbers : 83013 XA10175 CA9800 AF9800 AF1595 PA9910 TA38213 A38213 49013