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 : 88153 XA4479 CA6479 CA8754 AF6479 AF8754 AF953 PA4479 A34479 A35330 46153, Kit Includes: 11x Air Filter, Kit Variations: K57-100217 K57-100433 K57-100729 K57-101016 K57-101196 K57-101956 K57-102336 K57-102716 K57-103096 K57-103476, Part Reference Numbers : 88153 XA4479 CA6479 CA8754 AF6479 AF8754 AF953 PA4479 A34479 A35330 46153