Sacha Feinberg-Mngomezulu starts at flyhalf on his return from injury in the clash with the Welsh outfit which kicks off at 17:00 on Saturday at Parc y Scarlets.
The only other change to the backline that did duty in the win against the Vodacom Bulls at Loftus Versfeld sees Herschel Jantjies start at scrumhalf, with Dewaldt Duvenage, Jurie Matthee and Damian Willemse providing cover on the bench.
In the forward pack, Marcel Theunissen starts at blindside flank in place of the injured Ben-Jason Dixon, while Frans Malherbe, Joseph Dweba and Ali Vermaak form an experienced front row.
Director of Rugby John Dobson said that while the team only arrived in Wales on Wednesday, they made the most of the two-week period building up to this match.
"It is obviously fantastic to have players of Sacha and Damianâs quality back in the group and we have made good use of the break to prepare for this game," he told the Stormers website.
âScarlets have been impressive this season and we know that it will have to be an 80-minute performance to get the result that we need from this one."
Stormers - 15 Warrick Gelant, 14 Ben Loader, 13 Wandisile Simelane, 12 Dan du Plessis, 11 Leolin Zas, 10 Sacha Feinberg-Mngomezulu, 9 Herschel Jantjies, 8 Evan Roos, 7 Marcel Theunissen, 6 Deon Fourie, 5 Ruben van Heerden, 4 Salmaan Moerat (c), 3 Frans Malherbe, 2 Joseph Dweba, 1 Ali Vermaak
Replacements: 16 Andre-Hugo Venter, 17 Brok Harris, 18 Sazi Sandi, 19 Gary Porter, 20 Willie Engelbrecht, 21 Dewaldt Duvenage, 22 Jurie Matthee, 23 Damian Willemse