But Mark Jones, Stephen Jones, Dwayne Peel and Alix Popham are all rested, along with Ireland's Simon Easterby.
However, Scotland squad lock Scott McLeod is in the starting line-up.
Full-back Barry Davies makes his first start since the new year after injury, while young scrum-half Liam Davies makes his first start of the season.
Changes upfront from the game against Leinster bring in Aled Gravelle, Adam Jones and Inoke Afeaki.
Scarlets: B Davies; James, King, Watkins, Daniel; C Thomas, L Davies; I Thomas, Gravelle, Dunlea, A Jones, McLeod, Afeaki, D Jones, Bater (capt).
Replacements: Rees, Mau, N Thomas, G Thomas, Stuart-Smith, Gavin Evans, Stoddard.