Four years on from a memorable encounter between the Lions and Japan in Edinburgh, Los Pumas headed to the Aviva Stadium and earned a 28-24 victory in a thrilling encounter.
The match saw the Lions play in Ireland for the first time and was the curtain-raiser for the Tour, with the squad heading to Australia the following week.
Bundee Aki and Tadgh Beirne crossed for the Lions, who also scored through a penalty try, but tries from Ignacio Mendy, Tomas Albornoz and Santiago Cordero secured the spoils for the visitors.