A4 2002 1.8 T aircon pump part number?

[Matt 77]

Hi all, the air con pump has pack up and I'm trying to locate a good used second hand pump and not entirely sure what the relevant part numbers is on the pump as other models of A4 may use the same pump? These are the numbers on the manufacturing plate.

447220-8413
6SEU12C 02D00248
Denso

Any help would be appreciated Thanks.