On vagcat.com there is only one part number,
air cleaner with connecting parts / 3.7/4.2ltr. / 8 cylinder: air volume meter
/ AQG,AQF,ARU, AQH,AKC,AVP, AUW,AVN,BCS, AYS
(2) 077129620D air cleaner element
Its free to create an account, really useful site.
http://www.vagcat.com/epc/cat/au/A8Q...57/49/3245789/