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 : 83223 XA5649 CA10171 AF10171 AF1308 PA5649 A35649 49223, Kit Includes: 11x Air Filter, Kit Variations: K57-100110 K57-100416 K57-100712 K57-100999 K57-101303 K57-102063 K57-102443 K57-102823 K57-103203 K57-103583 KFL-100105 KFL-100618 KFL-101222 KFL-101545 KFL-102051 KFL-102610, Part Reference Numbers : 83223 XA5649 CA10171 AF10171 AF1308 PA5649 A35649 49223