Evinrude / Johnson / OMC CDI Unit Part number: 584489This part is the under flywheel CDI unit.To fit the following Two stroke models:20HP: 1989 - 199225HP: 1989 - 199230HP: 1989 - 199240HP: 1989 - 199250HP: 1989 - 1992It is a OEM part, not a aftermarket/pattern one.If you are in any doubt whether this part is suitable, please contact us, before purchasing.Thank you for looking.(O)