Article 10D

Power Unit mountings to gearbox and Survival Cell

Technical Regulations

Article 10D

FIA Source

Power Unit mountings to gearbox and Survival Cell

Chapter: C5.4.17

In Simple Terms

This regulation specifies how the engine (Power Unit) is physically attached to the car's gearbox and survival cell (the main chassis structure) using studs, nuts, and specialized fasteners. Teams must use approved mounting hardware like top-hat bushes and barrel nuts to ensure safe and standardized connections between these critical components.

  • Defines the specific fastening hardware allowed for Power Unit mounting (studs, nuts, top-hat bushes, barrel nuts)
  • Covers two connection points: Power Unit to Survival Cell and Power Unit to Gearbox
  • Allows studs to be integrated directly into the Survival Cell or gearbox carrier for structural efficiency
  • Ensures standardized, safe attachment of the engine to prevent component separation during racing
Official FIA Text

Studs between PU and Survival Cell and between PU and Gearbox. Studs, Nuts, Top-hat Bushes, Barrel nuts. ds integrated into Survival Cell or gearbox carrier

power unit mountingengine attachmentsurvival cellgearboxstuds
2026 Season Regulations