The necks do not screw off.  All of them that I have ever seen have been
plastic heated together (melted).  I have a brand new one of these tanks
sitting here if you want it.  These are $80.  New neck, nipple and all.  It
does not come with a new metal cap but you can reuse your old one for now
and we could get you a new one for $11 if you felt your really wanted a new
one.  Let me know.

Thanks,
Ken Wilford
John 3:16
http://www.vanagain.com
http://www.strictlyvwauctions.com
Phone: (856)-327-4936
Fax: (856)-327-2242

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Lee Whetstone
Sent: Thursday, March 20, 2003 9:15 AM
To: vanagon@GERRY.VANAGON.COM
Subject: EXPANSION TANK OVERFLOW FITTING

I have an 831/2 water cooled , the nipple on the expansion tank broke off .
My expansion tank is the type with the standard radiator cap, the nipple
comes off the neck of the expansion tank. I don't know if I could switch
this entire tank with one of the tanks that has the nipple coming off the
cap itself or not.
    I would prefer to get another neck for my tank,as I understand it the
neck is supposed to screw off of the body of the tank.I spoke with the local
dealership , they claim that they are not able to get these necks from the
factory any longer.
I am located in Iowa.