The Airbox Cover prevents water and cleansers from entering your intake when cleaning the airbox. Airbox Covers are manufactured from tough, durable ABS plastic. A rubber sealing ring is provided to insure a perfect, leak-free fit. To use, simply remove your airfilter from the airbox and install the Airbox Cover with the provided mounting screw. For KTM 250 SX-F, 450 SX-F (2007-2010), 250 EXC-F (2007-2011), 125 EXC (2007-2011), 125 SX (2007-2010), 250 SX (2007-2010), 300 EXC (2008-2011), 200 EXC (2007-2010), 250 EXC (2007-2011), 450 EXC (2007-2010), 144 SX (2007-2008), 150 SX (2009-2010).