The former Leicester and Newcastle prop has joined Saracens on a three-month deal, with the Men in Black missing four front-rowers.
Marco Riccioni, Eroni Mawi, Ollie Hoskins and Ralph Adams-Hale are all out of action through injury.
Saracens have turned to 36-year-old Mulipola, who enjoyed a similar short-term injury stint at Montpellier during the World Cup.
The club have registered Mulipola for the Champions Cup, and the ex-Gloucester star could make his debut in Saturday’s tournament opener.
They will face the Bulls in Pretoria, and Mulipola is on hand for the Loftus Versfeld encounter.
“Logovi’i is a player with great experience and we are looking forward to seeing him in a Saracens shirt,” said Saracens rugby director Mark McCall.
“He is already settling in with us in Pretoria and we are confident he will be a great addition to the group.”