Several on line vendors advertise them.  I purchased mine from Bus Depot a
few years ago.  It took two tries to get the correct one as the change was
in `87(the year of our van) and our vin did not match what catalog called
for.

Mark in AK

On Thu, Aug 26, 2010 at 9:21 PM, Mike Miller <mwmiller@cwnet.com> wrote:

> Vanners,
>
> Any one know a source for the later model water tank drain caps? The one
> with the very large threads and the cap is slightly larger than the old
> tank's.
>
> Mike
>