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 : 93854 XA10653 CA12112 AF12112 SEE AF1718 A21388 WA10646, Kit Includes: 4x Air Filter, Kit Variations: K57-100128 K57-100353 K57-100939 K57-101399 K57-101779 K57-102159 K57-102539 K57-102919 K57-103299 K57-103679 KFL-100385 KFL-100623 KFL-101155 KFL-101833 KFL-102191 KFL-102750, Part Reference Numbers : 93854 XA10653 CA12112 AF12112 SEE AF1718 A21388 WA10646