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 : 83123 XA6312 CA10578 AF10578 AF1314 PA6312 A26312 49123, Kit Includes: 11x Air Filter, Kit Variations: K57-100043 K57-100556 K57-100847 K57-101134 K57-101232 K57-101992 K57-102372 K57-102752 K57-103132 K57-103512 KFL-100189 KFL-100813 KFL-101178 KFL-101784 KFL-101962 KFL-102521, Part Reference Numbers : 83123 XA6312 CA10578 AF10578 AF1314 PA6312 A26312 49123