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 : 538867 93908 XA10216 XA10226 CA11541 AF11541 TA59182 A59182 WA10257 WA10403, Kit Includes: 2x Air Filter, Kit Variations: K57-101452 K57-101832 K57-102212 K57-102592 K57-102972 K57-103352 K57-103732 K57-104004 K57-104097 K57-104190, Part Reference Numbers : 538867 93908 XA10216 XA10226 CA11541 AF11541 TA59182 A59182 WA10257 WA10403