The Racing Point driver clouted the wall at the exit of the final chicane during the final free practice session, hitting the wall with the right-hand side of his car.
Following an inspection of his machine in the garage, Racing Point realised that Perez’s gearbox could not be used again so a new one is to be fitted. It means he will take a grid drop later on.
“After our inspection we found some damage so we had to change it,” sporting director Andy Stevenson told Motorsport.com.
Racing Point has introduced a major upgrade for this weekend’s Marina Bay race, as it sets its sights on ending the year with the fourth quickest car.
Additional reporting by Adam Cooper