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 : AF111J AF1662 TA11518 A11518 WA11060, Kit Includes: 10x Air Filter, Kit Variations: K57-101833 K57-102213 K57-102593 K57-102973 K57-103353 K57-103733 K57-103912 K57-104005 K57-104098 K57-104191, Part Reference Numbers : AF111J AF1662 TA11518 A11518 WA11060