Vincent Kock has replaced the injured Julian Redelinghuys in the only change to South Africa's starting XV for the Test against Argentina in Salta.
Koch, who has three Test caps to his name, comes in for Redelinghuys who has been ruled out of action with a hamstring injury he sustained in the first Rugby Championship Test in Nelspruit on Saturday, won by the Boks by 30-23.
With Koch drafted into the starting line-up, Lourens Adriaanse moves onto the bench to as one of the two replacement props for what could be his second Springbok cap.
Also amongst the replacements, the Springboks have opted for the experienced Morné Steyn, who will give the team an extra kicking-option, in place of Juan de Jongh.
The rest of the Springbok line-up remains unchanged from the one that defeated the Pumas at the Mbombela Stadium. In keeping changes to a minimum, Springbok coach Allister Coetzee has opted for continuity against a Pumas side that will be lifted by their passionate home support.
“Vincent did very well when he came on as a replacement for Julian in Nelspruit, and he is rewarded with a starting berth, while we believe it would be good to give Lourens an opportunity on the bench at this stage,” said Bok coach Allister Coetzee.
“We expect them to try and put us under pressure with their tactical kicking. Morné is an experienced player with good kicking attributes, and he will provide an additional kicking cover for us.
“We will continue to build on our cohesion as a team. This is the first away Test for this side and we expect another huge battle against the Pumas.”
The Springboks will continue with their preparations in Buenos Aires before flying out to Salta on Friday morning.
South Africa: 15 Johan Goosen, 14 Ruan Combrinck, 13 Lionel Mapoe, 12 Damian de Allende, 11 Bryan Habana, 10 Elton Jantjies, Faf de Klerk, 8 Warren Whiteley, 7 Teboho Mohoje, 6 Francois Louw, 5 Lood de Jager, 4 Eben Etzebeth, 3 Vincent Koch, 2 Adriaan Strauss (c) , Tendai Mtawarira.
Replacements: 16 Bongi Mbonambi, 17 Steven Kitshoff, 18 Lourens Adriaanse, 19 Pieter-Steph du Toit, 20 Jaco Kriel, 21 Rudy Paige, 22 Morne Steyn, 23 Jesse Kriel.
Date: Saturday 27 August 2016
Venue: Estadio Ernesto Martearena Stadium, Salta
Kick-Off: 16:40 local (19:40 GMT)
Referee: Jerome Garces (France)
Assistant Referees: Glen Jackson (New Zealand), Ben O'Keeffe (New Zealand)
TMO: George Ayoub (Australia)