The Monza event returned to the calendar for the third consecutive year.

4 Floyd Vanwall Racing Team entry, João Paulo de Oliveira replaced Tom Dillmann.

At United Autosports, Ben Hanley and Giedo van der Garde replaced Filipe Albuquerque and Tom Blomqvist at the No.

23 cars, respectively, due to Albuquerque and Blomqvist driving at the IMSA race this weekend.

Furthermore, Efrin Castro made his debut in the WEC with Team Project 1.