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 : 97372 SEE XA10486 TA31815 A31815 WA11509, Kit Includes: 2x Air Filter, Kit Variations: K57-101494 K57-101874 K57-102254 K57-102634 K57-103014 K57-103394 K57-103774 K57-104008 K57-104101 K57-104194, Part Reference Numbers : 97372 SEE XA10486 XA12027 TA31815 A31815 WA11509