There should be a "square cross-section" o-ring that makes the seal between 
     the heater core and the valve assy.
     
     Pat S.

______________________________ Reply Separator _________________________________
Subject: RE: '90 Rear Heater Leak Fixed :)
Author:  Alan Yamada <AYAMADA@nwtel.ca> at INTERNET
Date:    3/28/96 11:07 AM

i've had rear heater problems too, only the leak was between the 
control valve and the heater itself...on mine ('84) the valve bolts onto
the heater core with two bolts, and the plastic on plastic just doesn't 
seal well enough to stop leaks...am i missing a gasket (the $6.22 one) or a
seal (the $1.89 one)?

alan
'84 van