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 : 94072 XA10182 CA11503 AF11503 AF1643 PA9959 A39147 WA10072, Kit Includes: 12x Air Filter, Kit Variations: K57-100030 K57-100357 K57-100656 K57-100943 K57-101283 K57-101663 K57-102423 K57-102803 K57-103183 K57-103563, Part Reference Numbers : 94072 XA10182 CA11503 AF11503 AF1643 PA9959 A39147 WA10072