Mounted on the bootlid flange. Note that the gap between the flange and the lid flange needs to be consistent around the perimeter of the lid.
 
Part Name: Sprint Boot (Trunk) Lid Aperture Seal
AlfaStop Product Code: 1RU155
Original Alfa Romeo Part No: 1493.90.033
Model: Guilia 101 Series, Giulietta 750 & 101
Quantity Per Car: 1