Jacob Stockdale scored twice as Ireland resisted a spirited second-half fightback from Argentina to avenge their 2015 Rugby World Cup heartache with a gritty 28-19 victory and complete a clean sweep of their November campaign.
The men in green opened proceedings with a brace of penalties from Johnny Sexton as the hosts quickly raced into a commanding 20-0 lead, in part aided by an error-strewn opening quarter from Argentina.
New cap Adam Byrne came close to a fairytale start to life in Test rugby inside the first 10 minutes. The 23-year-old Leinster winger -- Ireland's fourth debutant of the series -- watched Conor Murray's cross-field kick bounce unfavourably before Argentina managed to clear their lines.
But it didn't take long for Ireland to slice open Argentina's defence in a freezing Dublin. A powerful carry from Bundee Aki found Chris Farrell, whose quick hands allwoed Stockdale to apply the finish.
Just eight of the men involved in Ireland's World Cup quarterfinal defeat from two years ago lined out in the Aviva Stadium, while three of those who were forced to sit and watch -- Peter O'Mahony, Jonny Sexton and Sean O'Brien -- started.
By the half-hour mark, the Latin Americans patiently built up the phases -- but, thwarted by their lateral shape in attack, struggled to maintain what momentum they had gained as Rob Kearney wrestled the ball from Pedro Sanchez just as the tourists looked their most potent.
An O'Brien steal just inside Argentinean territory sparked Ireland back into attacking mode on the stroke of half-time which in turn prompted a blazing run from the industrious Kearney.
A series of mini carries from the forward pods saw several intricate passes from Ireland, who went in at the break with a clean-sheet at the end of an entertaining first half.
Ireland started the second period as they had finished the first, with Sexton and Stockdale again showcasing fine interplay as the fly-half flatly fed the latter to run in for his second to the delight of the home crowd.
The Ulster man, without any support player, backed himself to outrun Joaquin Tuculet and Sanchez to dive over, with Sexton kicking the conversion. But a spirited Argentina flooded forward and, determined to get on the scoreboard, enjoyed a prolonged period of possession as they fatigued their Irish opponents.
A Peter O'Mahony turnover kept the visitors at bay, before Ramiro Moyano battled his way through a sea of green shirts, handing-off Devin Toner as Irish indiscipline gave Argentina a prime scoring opportunity from a penalty lineout.
And a nifty grubber orchestrated by Sanchez from the ensuing passage of play saw Tuculet chase and dot down and after it was initially thought the fullback had burst from an offside position, his score was deemed legitimate.
Renewed by their effort, Argentina countered again as Ireland tired and tried to find a gap in robust Irish defence -- and would have scored again had Juan Manuel Leguizamon not waywardly flown his pass out of play.
But Leguizamon made amends minutes later, receiving a looping pass from the lively Tuculet to outclass Kearney and pounce in the corner.
Despite relinquishing their healthy margin, Ireland maintained their composure through the trusty boot of Sexton, who enjoyed a 100 percent record from the tee and whose penalty looked to have put an Irish win beyond doubt.
And despite a frenetic phase of play in the dying moments which saw the Argentians stream forward again, Ramiro Moyano crossed for the visitors' third to ensure the South Americans finished on a high and take the shine off Ireland's first-half display.