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 : 83430 83756 XA6116 CA10755 AF10755 AF1453 PA6116 A36116 49430 49756, Kit Includes: 4x Air Filter, Kit Variations: K57-100111 K57-100415 K57-100998 K57-101302 K57-101682 K57-102062 K57-102442 K57-102822 K57-103202 K57-103582, Part Reference Numbers : 83430 83756 XA6116 CA10755 AF10755 AF1453 PA6116 A36116 49430 49756