> i left my drain cap on the ground while the tank drained, 
> then drove over it.  i need a new one.  bus depot has one for 
> early and one for late 1987 (before and after "#J00001" on 
> metal westfalia tag on rear seat).  my van is at home, i'd 
> like to order it today so i can use my water tank this weekend.
>   is the difference significant (thread size or cap 
> diameter)?  can i tell if my van is early or late 1987 by 
> some other feature change, one that i might remember without 
> seeing my van?

The two caps are virtually identical looking. The difference is the thread
pitch, but it is such a small difference that I cannot even tell from
looking at them side by side. On an '87, our website lists the alleged break
point where the thread pitch changed, by the Westfalia (not VW) serial
number, located on a plate on the sofabed base, as per the VW fiche.
However, I had one customer whose serial number was rather close to that
break point, and should have needed a later cap, but needed an earlier one.
I don't know if his situation was unique for some reason, or if the fiche is
a bit off on the break point. 

- Ron Salmon
  The Bus Depot, Inc.
  www.busdepot.com
  (215)  234-VWVW

_____________________________________________
Toll-Free for Orders by PART # :  1-866-BUS-DEPOT