I bought some leftovers from a parting out a pre '80 R100RS and one of the items baffles me. It looks as if it fits in the hole for the oilplug as the banjobolt belonging to it has the same turns and diameter as the oilplug, but apart from that I cannot find out anything about it. It is not in the parts list of the RS on OEMBMW.
greetings from a white and cold north (14F at night)