I'm having trouble with my fuel filler pipe it's rusting badly.
Went to put fuel in her tonight and the part where the cap screws into has rusted away.
Can anyone tell me if I can just buy a kit or a neck for the tank, and if so where I can get o e from
Thanks for your help 
Ill second that ??
i had the same issue with my mk3, and these guys are right new tank,
i didnt do that mind as the neck of it is plastic underneath the metal ring that was knacked i removed this so just the plastic neck was showing i then used a universal fuel filler cap and worked fine and passed mot, you need one that locks into the neck of it, mine was 10 quid and no more rust ,
just my 2pence worth