Red Bull have elected to take new power unit components at just the second Formula 1 race of the season.
With main rivals Ferrari attracting much of the attention by taking a ten-place grid penalty for the Saudi Arabian GP, Red Bull have also decided to take new components related to the electrical side of the power unit.
Sergio Perez will use a new energy store (ES, battery), along with new control electronics (CE), both of which will be the second of two permitted in the season.
Perez's changes will incur no grid penalties, but the Mexican will have already started to use both available components for the season. Max Verstappen's car has had no changes.
Perez's RB19 will also take new gearbox components for this event, being the only driver to do so in Saudi Arabia.
It was also confirmed that along with Leclerc's ES and CE change, the Monegasque will use a new Internal Combustion Engine (ICE), along with teammate Carlos Sainz, and a new Motor Generator Unit - Heat (MGU-H).
There are also power unit component changes for McLaren's Lando Norris, who will take a new ICE, Turbocharger, MGU-H, MGU-Kinetic and Exhaust.