fuel cock for XL500S

[Georgios]

Hello,

I am new to the forum.
I have an XL500S which I love and do all the work on it myself.
Currently I have a problem: my fuel cock is leaking from the selector. There in no way I can dismantled and service it, it is fixed.
The part number is:

16951-434-015 body comp. cock

or

16951-434-015 cock assy fuel

for the complete assy. But David Silver and others I have searched do not have them, they are both discontinued from HONDA. Do you know a source where I could find either of this? Or maybe you know of something aftermarket equivalent that could fit?

Thanks

Georgios
Athens Greece