Yamaha Ignition Ignitor CDI ECU Box 6M6-85540-01-00 61X-85540-00-00 Drop in Aftermarket Replacement CDI Plugs into Existing Wiring Harness Replaces Yamaha Part #s 6M6-85540-01-00 and 61X-855540-00-00 See Description for Exact Model & Year Compatibility