Boca Juniors set up a first ever Superclasico Copa Libertadores final after overcoming Palmeiras on Wednesday.
A 2-2 draw in Sao Paulo was enough for Boca to move into the decider courtesy of a 4-2 aggregate win, and fierce rivals River Plate await in the final.
Dario Benedetto, Boca's hero in the semi-final first leg, scored once again off the bench, ending Palmeiras' challenge after Luan and Gustavo Gomez had dragged them back into the tie.
Ramon Abila's opener had put Boca in complete control, before Palmeiras' fightback.
But the six-time champions moved into the final for a record 11th time and rivals River will be aiming to deny them a seventh title.