Thank you so much.From this diagram..
fuel tank; F 8Z-3-000 001>> Audi A2 (A2) 2003 year Audi EUROPA 201006
fuel tank<br/>F 8Z-3-000 001>> Audi A2 (A2) 2003 year Audi EUROPA 201006 spare partsaudi.7zap.com
and this diagram..
fuel delivery unit and sender for fuel gauge Audi A2 (A2) 2003 year Audi EUROPA 919030
fuel delivery unit and sender for fuel gauge Audi A2 (A2) 2003 year Audi EUROPA 919030 spare partsaudi.7zap.com
Depending on just the sender or the higher assembly then
8Z0919673F for the sender only or
8Z0919183F for the unit
These numbers are gained from the cars VIN number.