The Italians have won their last three home games against Welsh regions.
Scarlets also won their first game of the 2016/17 campaign with a 17-8 victory at home to Connacht on Saturday.
The Welshmen have slipped to three straight away defeats but have been victorious on their last five visits to Italy.
Scarlets have won their last six encounters with Treviso since the Italian's 41-17 victory at Parc y Scarlets in May 2013.
Overall Guinness PRO12 head to head record:
Played 12, Treviso won 4, Scarlets won 8.
At Stadio Monigo, 8.05pm local time (7.05pm UK & Ireland)
Referee: Gary Conway (IRFU, 23rd competition game)
Assistant Referees: Nigel Correll (IRFU), Simone Boaretto (FIR)
Citing Commissioner: Francesco Grillo (FIR)
Guinness PRO12
Suite 208, Alexandra House,
The Sweepstakes
Ballsbridge, Dublin 4, Ireland