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 : 88133 XA3465 CA3660 AF3660 AF805 PA3465 A23465 A40015 42133 46133, Kit Includes: 8x Air Filter, Kit Variations: K57-100304 K57-100421 K57-100717 K57-101004 K57-101315 K57-101695 K57-102075 K57-102455 K57-103215 K57-103595, Part Reference Numbers : 88133 XA3465 CA3660 AF3660 AF805 PA3465 A23465 A40015 42133 46133