Sergio Perez and Zhou Guanyu will take grid penalties for the 2022 US Grand Prix after taking on extra power unit elements.
Both drivers have been fitted with new Internal Combustion Engines, their fifth of the season.
As a result, Perez and Zhou will drop five places on Sunday’s grid.
Perez takes on a new engine ahead of his home race in Mexico next weekend, where he will be vying for the race victory.
Red Bull enters the weekend hopeful in Austin, Texas hopeful of clinching its first Constructors’ Championship since 2013.
Zhou’s penalty comes as Alfa Romeo looks to get back into the points, having scored just one point in the last nine races.