Order Includes: 1x CDI Module. Compatible with Polaris models: Scrambler 500 4x4 499cc 1997-2000. Dimension: 60.9mm L x 35.5mm W x 21.8mm H, w/INCRESED RPM. Part Numbers: 3084691, 3085382, 3085564, 3085639. We strongly suggest comparing the posted picture to the unit(s) that needs to be replaced..
