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 : 83157 XA5652 CA10490 AF10490 AF1394 PA5652 A25652 49157, Kit Includes: 12x Air Filter, Kit Variations: K57-100247 K57-100438 K57-100734 K57-101021 K57-101241 K57-101621 K57-102381 K57-102761 K57-103141 K57-103521 KFL-100190 KFL-100830 KFL-101193 KFL-101803 KFL-101972 KFL-102531, Part Reference Numbers : 83157 XA5652 CA10490 AF10490 AF1394 PA5652 A25652 49157