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 : 93703 XA10308 CA11950 AF11950 AF2493 PA99079 A58178 WA10304, Kit Includes: 5x Air Filter, Kit Variations: K57-100144 K57-100348 K57-100647 K57-101292 K57-101672 K57-102052 K57-102432 K57-102812 K57-103192 K57-103572, Part Reference Numbers : 93703 XA10308 CA11950 AF11950 AF2493 PA99079 A58178 WA10304