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 : 87839 XA5620 CA10022 AF10022 AFC1302 PA5620 A45620 42839, Kit Includes: 2x Air Filter, Kit Variations: K57-100519 K57-100811 K57-101098 K57-101208 K57-101588 K57-101968 K57-102348 K57-102728 K57-103108 K57-103488, Part Reference Numbers : 87839 XA5620 CA10022 AF10022 AFC1302 PA5620 A45620 42839