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 Honda CR 125 (1989-2007), CRE 125, CR 250 R (1988-2007), CR 500 R (1990-2001).