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 : XA5645 CA9636 AF9636 AF1255 PA5645 A35645 42823, Kit Includes: 6x Air Filter, Kit Variations: K57-100051 K57-100441 K57-100737 K57-101024 K57-101385 K57-101765 K57-102145 K57-102905 K57-103285 K57-103665 KFL-100214 KFL-100852 KFL-101291 KFL-101596 KFL-102169 KFL-102728, Part Reference Numbers : XA5645 CA9636 AF9636 AF1255 PA5645 A35645 42823