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 : 93881 XA11571 CA12296 AF910J A21417 WA10835, Kit Includes: 12x Air Filter, Kit Variations: K57-100312 K57-100364 K57-100663 K57-100950 K57-101575 K57-101955 K57-102715 K57-103095 K57-103475 K57-103855 KFL-100417 KFL-100654 KFL-101043 KFL-101811 KFL-102476 KFL-103035, Part Reference Numbers : 93881 XA11571 CA12296 AF910J A21417 WA10835