[s-cars] 92 S4 Heater Core / Heater Box

[Dan Smisko]

Got a replacement heater core for a 92 S4 from The Parts Connection.
(They seem to have disappeared, anybody know why?)
The core fits, but the hose connections are too small.  The original is
20mm diameter - this is the tube OD, not the little bulge at the end.
The replacement is 18.2mm diameter - about 1/16" smaller.
Does anyone know if there is a sleeve or something I can put on?
Or where to to get the right part that fits?

Second, does anybody know the part number of the gasket between
the heater box and firewall?  I've gotten two parts from the
dealer so far, both wrong.

Thanks.

Dan Smisko