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 : 87476 XA5305 CA8918 AF8918 AF1061 PA5305 A35305 42476, Kit Includes: 9x Air Filter, Kit Variations: K57-100152 K57-100550 K57-100841 K57-101128 K57-101243 K57-101623 K57-102003 K57-102383 K57-102763 K57-103143, Part Reference Numbers : 87476 XA5305 CA8918 AF8918 AF1061 PA5305 A35305 42476