Daniel ,
This Oil filter assembly is not the original Vokes type fitted to
401 -
406
, or the earlier Tecalamit type fitted to
400's
If you need a replacement cartridge I suggest you simply take the old one
to a spare parts supplier and match one to fit.
But if you want your
401 to be to original specification
I have a spare original Vokes type with new cartridges to match
OR
I can supply a adapter to suit modern spin on filters
Regards
Geoff