DCM58A, some times when I am trying to locate parts that are no longer manufactured or even have a part number to search on, I look at other engines with similar configuration and see if that part looks similar or could be used. I actually did that for the cowling seal on my '76 Johnson 40 HP. The seal is no long available, but newer engines used the same type seal and I bought one of them and used it. It was perfect. So maybe you can look at the oldest parts break down of an engine that closely resembles yours to see if a part from that engine could work. Of course the part number won't be the same (or it could, who knows) but the part itself can fit and work. JMHO.