Pierre Gasly has trialled the halo cockpit protector on the Red Bull at the in-season Silverstone test, marking the first time the new protection device has been run by a team other than Ferrari.
Red Bull Racing has developed an alternative to the controversial halo prepared by Ferrari with its own aeroscreen which made its debut on Daniel Ricciardo's car in free practice one at the Russian Grand Prix.
However, after the FIA remained uncertain about the aeroscreen's effectiveness - despite Red Bull releasing videos of the device during a high-speed impact test - it has backed the halo device to be implemented for the 2017 season.
In the opening free practice at Silverstone on Friday, Ferrari tested the revised 'Halo 2' design on Sebastian Vettel's car. The redesigned structure has now made its debut on the Red Bull car for a installation lap run by junior driver Gasly.
The FIA is exploring the option of introducing a cockpit protection device for 2017 and is undergoing testing to determine whether it would be ready.
The device has split opinion in the F1 paddock, with Vettel and Nico Rosberg favouring it for improved safety while Lewis Hamilton has played down his initial threaten of 'taking it off', saying he would race with it if required.