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 : 83201 XA5907 CA10781 AF10781 AF1487 PA5907 A35907 49201, Kit Includes: 12x Air Filter, Kit Variations: K57-100055 K57-100513 K57-100805 K57-101092 K57-101314 K57-101694 K57-102454 K57-102834 K57-103214 K57-103594, Part Reference Numbers : 83201 XA5907 CA10781 AF10781 AF1487 PA5907 A35907 49201