Matt,
I have a rear heater that came out of my '87 Syncro Westy that you can have.
You would need to find out if it is the same as the one in your bench for
your '84.
BD lists only "heater core" 867819121A for both the '84 and '87. But that
may
be the front. It's the one for $91.12. Maybe contact Ron at BD and as, then
get back
to me and if they're the same I'll ship this to you.

bob

On Mon, Aug 24, 2009 at 10:38 PM, Matthew Snook <matt@snooksband.com> wrote:

> Tomorrow I'll pull the blown rear heater out of my '84 Westy (1.9
> Wasserboxer).  Does anyone have advice on which part is most likely the
> leaking culprit?  I'll start my investigation there...
>
> Also, I will need to buy those parts.  Anybody got a used one for sale that
> works perfectly?  Or a suggestion on which parts place to try?  Also if it
> is the core or a valve, which peripheral parts should I throw in?  Do any
> of
> those rear heater parts go out often enough that I should get an extra to
> throw in the parts bucket?
>
> Thanks,
>
> Matt
>