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 : 83843 XA5826 CA10256 AF10256 AF1320 PA5826 A35826 49843, Kit Includes: 4x Air Filter, Kit Variations: K57-100146 K57-100446 K57-101029 K57-101282 K57-101662 K57-102042 K57-102422 K57-102802 K57-103182 K57-103562, Part Reference Numbers : 83843 XA5826 CA10256 AF10256 AF1320 PA5826 A35826 49843