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 : 87472 XA5267 CA8602 AF8602 AF1047 PA5267 A35267 42472, Kit Includes: 12x Air Filter, Kit Variations: K57-100148 K57-100483 K57-100777 K57-101064 K57-101284 K57-101664 K57-102424 K57-102804 K57-103184 K57-103564, Part Reference Numbers : 87472 XA5267 CA8602 AF8602 AF1047 PA5267 A35267 42472