Sharks change three for Stormers showdown
Du Preez has selected Makazole Mapimpi on the wing with Lwazi Mvovo dropping down to the bench.
At scrumhalf, Cameron Wright replaces Louis Schreuder at scrumhalf with the latter also dropping down to the bench.
Meanwhile, in the pack Daniel du Preez joins his twin Jean-Luc in the loose trio, taking over from Lubabalo Mtembu at No.8.
Mtembu drops out of the matchday 23.
Sharks: 15 Curwin Bosch, 14 Sibusiso Nkosi, 13 Lukhanyo Am, 12 Andre Esterhuizen, 11 Makazole Mapimpi, 10 Robert du Preez, 9 Cameron Wright, 8 Daniel du Preez, 7 Jean-Luc du Preez, 6 Philip van der Walt, 5 Stephan Lewies, 4 Ruan Botha (captain), 3 Thomas du Toit, 2 Mahlatse Ralepelle, 1 Juan Schoeman.
Replacements: 16 Armand van der Merwe, 17 Mzamo Majola, 18 Ross Geldenhuys, 19 Tyler Paul, 20 Jacques Vermeulen, 21 Louis Schreuder, 22 Marius Louw, 23 Lwazi Mvovo.
Date: Saturday, April 21
Venue: Kings Park, Durban
Kick-off: 17.15 (15.15 GMT)
Referee: Glen Jackson (New Zealand)
Assistant referees: Egon Seconds, Cwengile Jadezweni
TMO: Marius Jonker