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 : 83946 SEE XA5512 CA11034 AF11034 AF1492 PA6164 AF5512 49946, Kit Includes: 5x Air Filter, Kit Variations: K57-100049 K57-100586 K57-100875 K57-101364 K57-101744 K57-102124 K57-102504 K57-102884 K57-103264 K57-103644, Part Reference Numbers : 83946 SEE XA5512 CA11034 AF11034 AF1492 PA6164 AF5512 49946