Complete cap shown in 3rd photo is for DISPLAY ONLY, not included.

New production, imported from Europe, suitable for MANY Italian motorcycles UNTIL about 1975, when they went to the smaller opening and unleaded fuel.  Your gas tank filler opening should be about 70mm overall.

This assembly should twist into the popular 'flip' caps of the late 60s and early 70s.

If fitting to an older original cap, should fit without any issue.  If fitting to new production, the fitting tabs might be a little tight, require very light grinding.  Know what you're doing.

We will answer questions promptly, thanks for looking.