These displays are direct replacement to your old one with missing clusters.
If you want to get OEM replacement part hold in mind, that VDO offer only whole dashboard as a replacement part, it will cost about 1000$ , these displays are not sold separately by VDO. If you find anyone who say made by VDO, you must know, it’s a fake.
Fit following cars cars with Bosch, Jaeger Marelli Clusters:
Audi S3 8L Series from 1999-2003
Audi TT 8N Series from 1999-2006
Audi A6 C5 4B Series 1998-2004 Bosch or Jaeger Only