Welcome to the new Wizard Outboard Forum.
Is there anyone who can help, me with a Gear Housing Cap for a 1968 Wizard 3.5 hp outboard motor. Model # OCO6503A86? If so please e-mail me at firstname.lastname@example.org
Did you mean COC6503A86? They were built by Chrysler in 1968.
Try this auction listing:
Thanks for your help. Looks like that is perfect.