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 : 83522 XA5846 CA9959 AF5970 AF1409 PA5846 A35846 49522, Kit Includes: 6x Air Filter, Kit Variations: K57-100156 K57-100424 K57-100720 K57-101007 K57-101465 K57-101845 K57-102225 K57-102985 K57-103365 K57-103745, Part Reference Numbers : 83522 XA5846 CA9959 AF5970 AF1409 PA5846 A35846 49522