3.0 TDI Thermostat Part Number[s]? ...

[JulianHicks]

In March I created the 'How long does it take to replace ...' thread for the thermostat, which gave some interesting variations!

I've managed all summer with it running cool but winter's almost upon us.

Before I consider looking at this in more detail, can anyone who has access to parts info. indicate what the part number[s] is/are please? [I used to have a web url for A8 parts but that doesn't work any more].

I'm slightly confused as although I've seen pictures of the thermostat housing at the front of the TDI engine, I'm not sure if that's an integral unit [1 part] or a housing with a separate thermostat inside [two parts].

Thanks - Julian