The tighthead prop missed the Brumbies’ Super Rugby Pacific semi-final loss to the Chiefs last month with a calf injury but the 29-year-old said there were no lingering issues ahead of the Test on Saturday (local time).
The match will be the first under returning Wallabies coach Eddie Jones.
“It’s going really well; I’m in a good place at the moment,” Alaalatoa said from their training base in Johannesburg.
“I’ve come into camp last week and I’ve done all the training so I’ve been ticking all the boxes and if selected I’ll be ready to go on the weekend.”