Hi Brad,
I found the proper size was 15mm.
I need to get some kind of parts listing for these vehicles before I end up having a parts store of my own.
Every time I start up on a new found vehicle, I always end up ordering all kinds of parts I don't really need. The 230SL is no different.
I tell myself that I will put the extra parts in a bin, just in case I might need them someday. The bin after some 40 years, is getting really big and there is no inventory system.
Before I go overboard on this project, can someone direct me to where I can find a parts catalog with the proper part numbers?
Thanks again,
Tom L.