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 : 88418 XA4878 CA8039 AF8039 AF484 PA4878 A34878 46418, Kit Includes: 3x Air Filter, Kit Variations: K57-100092 K57-100769 K57-101056 K57-101251 K57-101631 K57-102011 K57-102391 K57-102771 K57-103151 K57-103531, Part Reference Numbers : 88418 XA4878 CA8039 AF8039 AF484 PA4878 A34878 46418