sources
notes
unknown whether Aurora qualified on away goals, on a draw, or after a penalty shootout (likely given the shootouts in rounds 2 and 3)
series
| July 9, 1975 | CCL | 1975 | 1 | Central | Aurora F.C. | 1 - 0 | Platense FC | Estadio Excelsior | 1 |
| July 6, 1975 | CCL | 1975 | 1 | Central | Aurora F.C. | 3 - 4 | Platense FC | Estadio Excelsior | 1 |