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 : 93858 XA10660 CA12258 AF12258 PA99239 A41474 WA10695, Kit Includes: 12x Air Filter, Kit Variations: K57-100150 K57-100361 K57-100660 K57-100947 K57-101349 K57-101729 K57-102489 K57-102869 K57-103249 K57-103629, Part Reference Numbers : 93858 XA10660 CA12258 AF12258 PA99239 A41474 WA10695