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 : 83038 XA10025 CA11215 AF11215 AF1539 PA6202 A16202 49038, Kit Includes: 10x Air Filter, Kit Variations: K57-100301 K57-100500 K57-100792 K57-101079 K57-101712 K57-102092 K57-102472 K57-102852 K57-103232 K57-103612, Part Reference Numbers : 83038 XA10025 CA11215 AF11215 AF1539 PA6202 A16202 49038