Coach Steve Hansen had billed Fifita as a "real physical beast" before the game and the 25 year-old did not disappoint, crashing his way through the Los Pumas backline.
After struggling to put away Argentina on Saturday, they will find the Springboks better equipped to cash in on an extraordinary high error rate.
Springboks coach Alistair Coetzee has quashed any talk that the All Blacks are vulnerable as his side prepare to take on the world champions in Albany this weekend.
Add a drawn series against the British and Irish Lions into the mix, and the result is an All Blacks side that have slipped too easily between the sublime and the ridiculous this year.More news: Janet Jackson visits Harvey victims at Texas shelter
"We've got some pretty quick loosies in this team, but that was just awesome to see him go out and take his opportunity like that", said All Blacks centre Ryan Crotty.
All Blacks flanker Sam Cane admits that South Africa would push his side to the limit in this week's Rugby Championship clash.
The All Blacks had to come from 17-0 down to beat Australia in their last match and they were given another scare by the winless Pumas, who held a 22-15 second-half advantage.
Damian McKenzie exploited a compressed defensive line to ghost through a gap and feed an unmarked Milner-Skudder, Lienert-Brown chased a Beauden Barrett chip kick through with no fullback sweeping, while Dagg finished off a lengthy buildup that sucked in Pumas defenders.More news: Brewers pitcher Jimmy Nelson out for rest of 2017
But that has since been replaced with a need to force the pace - at times recklessly - from the start, and Hansen does not appear keen to alter that.
"We are trying to play this brand of rugby that everyone wants us to play and we are going to have to get better at it".
Moody - who has started all seven of New Zealand's Test matches at loosehead prop this year - sustained the injury during the All Blacks' less than convincing 39-22 win over Argentina in New Plymouth.More news: NASCAR punishes Gibbs, Hendrick, Penske