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 : 88035 XA5227 CA8221 AF8221 AF1040 PA5227 A35227 46035, Kit Includes: 11x Air Filter, Kit Variations: K57-100305 K57-100529 K57-100821 K57-101108 K57-101262 K57-102022 K57-102402 K57-102782 K57-103162 K57-103542, Part Reference Numbers : 88035 XA5227 CA8221 AF8221 AF1040 PA5227 A35227 46035