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 : 518216 XA10421 CA11958 AF11958 AF1679 PA8156 A48156 WA10315, Kit Includes: 9x Air Filter, Kit Variations: K57-100007 K57-100326 K57-100625 K57-100912 K57-101224 K57-101604 K57-101984 K57-102364 K57-102744 K57-103124 KFL-101886 KFL-101952 KFL-102511 KFL-103070 KFL-103249 KFL-103428, Part Reference Numbers : 518216 XA10421 CA11958 AF11958 AF1679 PA8156 A48156 WA10315