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 Kawasaki KX 125 (1990-1991), KX 125 (1994-2005), KX 250 (1990-1991), KX 250 (1994-2007), KX 500 (1990-1991), KX 500 (1994-2007).