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 : R518524 518524 XA10424 CA11949 AF11949 AF1666 PA99050 A28194 WA10212, Kit Includes: 7x Air Filter, Kit Variations: K57-100230 K57-100325 K57-100624 K57-100911 K57-101412 K57-101792 K57-102172 K57-102552 K57-102932 K57-103692 KFL-100299 KFL-100455 KFL-101107 KFL-101734 KFL-102207 KFL-102766, Part Reference Numbers : R518524 518524 XA10424 CA11949 AF11949 AF1666 PA99050 A28194 WA10212