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 : 83034 XA11074 CA11439 AF11439 AF1574 PA9950 TA38218 A38218 49034, Kit Includes: 9x Air Filter, Kit Variations: K57-100171 K57-100371 K57-100670 K57-100957 K57-101458 K57-101838 K57-102218 K57-102598 K57-102978 K57-103358, Part Reference Numbers : 83034 XA11074 CA11439 AF11439 AF1574 PA9950 TA38218 A38218 49034