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 : 83057 XA5703 CA10349 AF10349 AF1360 PA5703 A15703 49057, Kit Includes: 4x Air Filter, Kit Variations: K57-100020 K57-100458 K57-101041 K57-101268 K57-101648 K57-102028 K57-102408 K57-102788 K57-103168 K57-103548 KFL-100069 KFL-100644 KFL-101047 KFL-101719 KFL-102002 KFL-102561, Part Reference Numbers : 83057 XA5703 CA10349 AF10349 AF1360 PA5703 A15703 49057