Head coach Leo Cullen has made three changes to the side that swept past the Lions on a 59-10 scoreline. Tickets for the semi-final at the Aviva Stadium (kick-off 5.30pm) are available here.
After missing last week's quarter-final win, Rónan Kelleher is back to full fitness to feature at hooker, replacing Dan Sheehan who is nursing shoulder and knee injuries.
There are direct swaps at openside flanker and scrum half, respectively, as Scott Penny makes way for Josh van der Flier, and Jamison Gibson-Park takes over from Luke McGrath.
Thomas Clarkson, the only Leinster representative in this season's URC Elite XV, and Andrew Porter complete the defending champions' front row.
Following his player-of-the-match performance against the Lions, Joe McCarthy has shaken off a knock to start again in the engine room alongside James Ryan.
The province will field a trio of centurions in the back row - with 440 appearances between them - as van der Flier and Max Deegan combine with number 8 and captain Caelan Doris.
The only alteration to the back-line sees Gibson-Park pair up at half-back with Sam Prendergast, who impressed last Saturday with his playmaking and a 19-point haul.
Rieko Ioane and Jamie Osborne continue together in the centre, and James Lowe, linking up with Hugo Keenan and Jimmy O'Brien in the back-three, will be on the hunt for more tries after becoming Leinster's all-time record try scorer.
He touched down twice during the final quarter against the Lions to move onto 71 tries in 100 games for the province. Shane Horgan's record of 69 tries had stood since 2011.
Experienced duo Jack Conan and Garry Ringrose both come into the matchday 23, bolstering the bench for the visit of the 2022 champions to Dublin.
Gus McCarthy, Alex Usanov, Rabah Slimani, and Diarmuid Mangan will also provide forward cover, while a calf issue keeps Tadhg Furlong out of the squad.
McGrath, Harry Byrne, and Ringrose are the three replacement backs for Leinster's fourth successive URC semi-final appearance. Their only victory in the last-four was last year's 37-19 triumph over Glasgow Warriors.
Cullen's men lost twice to the Vodacom Bulls at this stage, in 2022 and 2024, but have won all seven of their previous URC clashes with South African opposition at the Aviva Stadium.
Second row Ryan commented: "We probably acknowledged that (on Monday) around how important it is just to keep getting better now because the Lions are a good side but the Stormers are a different kettle of fish coming up.
"They will fancy themselves. We know when it comes to finals you've got to be at your best.
"They're playing some good stuff. I think for us as a forward pack it's a huge game in terms of the set-piece. They've a very good lineout, a very good scrum, so we've got to make sure we front up there."
LEINSTER (v DHL Stormers): Hugo Keenan; Jimmy O'Brien, Rieko Ioane, Jamie Osborne, James Lowe; Sam Prendergast, Jamison Gibson-Park; Andrew Porter, Rónan Kelleher, Thomas Clarkson, Joe McCarthy, James Ryan, Max Deegan, Josh van der Flier, Caelan Doris (capt).
Replacements: Gus McCarthy, Alex Usanov, Rabah Slimani, Diarmuid Mangan, Jack Conan, Luke McGrath, Harry Byrne, Garry Ringrose.