Rodolfo Gonzalez and Tio Ellinas will be behind the wheel of the Marussia at next week's Young Driver Test.
Venezuelan Gonzalez is the team's reserve driver and he has already had a few practice outings, the last which came on Friday at the Nurburgring when he stood in for Jules Bianchi who was feeling under the weather.
Ellinas, who is currently the leader in the GP3 Championship, will get his first taste of Formula One action and he will be behind the wheel of the MR02 on the first day at Silverstone.
Although the FIA has announced that current Formula One drivers will be allowed to test on one of the three days to sample the new Pirelli tyres, Marussia have decided not to use either Jules Bianchi or Max Chilton.
The test runs from July 17-19 and Gonzalez will drive on the final two days.