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 : 88215 XA5244 CA8208 AF8208 AF1034 PA5244 A35244 46215, Kit Includes: 12x Air Filter, Kit Variations: K57-100220 K57-100590 K57-100879 K57-101166 K57-101487 K57-101867 K57-102627 K57-103007 K57-103387 K57-103767, Part Reference Numbers : 88215 XA5244 CA8208 AF8208 AF1034 PA5244 A35244 46215