From the parts list I have:
SA code: 55648 Antena 55648/02 Automatic
A 000 827 49 01 Antenna; availability undefined
A 000 990 59 91 Nut Retainer, 2 pcs (I am assuming these are the two that go into the holes as Shvegel indicated); availability undefined
A 000 997 24 90 replaced with A 000 997 43 90 Cable tie, 1pc; availability undefined
No mention about any bracket, so I assumed bracket (s) came with the antenna.
The above antenna part number was used widely, as per the system: 107, 108, 109, 110, 111, 113, 114, 115.