> I purchased the sendor that Bus Depot sells for the type 1, this will
> thread into the WBX block but has a larger hex head size for the wrench..I
> believe it's 17mm instead of 13mm.  So I had to dremel the block
> area where the drain plug resides, it was just big enough for the sender
to
> fit but no socket, dremel out some metal from the boss in a cicular
fashion and the
> socket now fits just right and I have a sender that works.

Just to clarify, since people have been responding regarding different years
of Vanagons, perhaps leading to some confusion ...
Yes, you can modify the sump plate or the sender, and thereby replace the
drain plug with the VDO sender if you have a wasserboxer.  However, if you
have an aircooled Vanagon you will have to drill a hole, as the drain plug
is a different size.

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