Juan Martin Hernandez will make his return from injury in Argentina's crunch Pool D match against Ireland in Paris on Sunday.
The Stade Francais star played in the opening two wins over France and Georgia, but missed last Saturday's 63-3 victory over Namibia with a thigh injury.
Despite being a fullback by trade, he will again line up at outhalf, alongside scrumhalf and captain Agustin Pichot.
Leinster's Felipe Contepomi, who started at number 10 against the Namibians, moves back into midfield and will partner his brother Manuel at centre.
With Juan Manuel Leguizamon out injured, Gonzalo Longo Elia comes in at number eight to make his first start of the tournament.
In total, there are five changes of personnel from last weekend.
Hooker Mario Ledesma and prop Juan Martin Scelzo are back in the frontrow in place of Alberto Vernet Basualdo and Omar Hasan.
And Lucas Borges - a scorer of two tries in the 33-3 win over Georgia - regains his place on the right wing, with Hernan Senillosa dropping to the bench.
The Pumas need just a point to finish top of the group.
Outhalf Dan Carter has been ruled out of New Zealand's match against Romania tomorrow because of a calf strain.
Carter, who sustained the injury in training yesterday, will be replaced by Luke McAlister, who steps off the bench to fill in.
Munster-bound Doug Howlett, who was not part of the original matchday 22, takes McAlister's place among the replacements.
Argentina: I Corleto; L Borges, M Contepomi, F Contepomi, H Agulla; JM Hernandez, A Pichot (capt); R Roncero, M Ledesma, JM Scelzo, I Fernandez Lobbe, P Albacete, L Ostiglia, JM Fernandez Lobbe, G Longo Elia. Replacements:A Vernet Basualdo, O Hasan, R Alvarez Kairelis, M Durand, N Fernandez Miranda, F Todeschini, H Senillosa.
New Zealand (revised team):N Evans; J Rokocoko, I
Toeava, A Mauger, S Sivivatu; L McAlister,
A Ellis; N Tialata, K Mealamu, G Somerville, R Thorne, K
Robinson, J Collins (capt), C Masoe, S Lauaki.
Replacements:A Hore, T Woodcock, C Jack, R McCaw,
B Leonard, D Howlett, C Smith.
