Doc 40 - Parts and parameters been replaced and or changed during Parc Fermé

This document, issued by the FIA Formula One Technical Delegate, Jo Bauer, details the parts and parameters that were replaced or changed during Parc Fermé on September 20-21, 2025, at the Azerbaijan Grand Prix. These changes were made with the approval of the FIA technical delegate, following written requests from the respective teams, in accordance with Article 40.3 of the 2025 Formula One Sporting Regulations.

McLaren Mercedes

• Car 81:
  • Survival cell (in accordance with SR Article 27.1)
  • Bonded chassis assemblies
  • Fuel system internals (excluding mandated FFMs)
  • RHS front inboard and outboard suspension assemblies
  • LHS front track rod
  • Front brake friction material
  • Floor assembly (excluding skids and plank)
  • Bib structure and associated stays
  • LHS front brake duct winglets
  • Steering wheel
  • PAS rack assembly
  • Steering column assembly
  • Throttle and brake pedal assemblies
  • Seat belts
  • Chassis pitot
  • Front wing/nose assembly
  • Parameter changes associated with the listed parts replacement
• Car 04:
  • Steering wheel

Ferrari

• Car 16:
  • RHS front outboard suspension assembly
  • Steering rack assembly
  • Front wing/nose assembly
  • Brake pump assembly
  • Floor assembly (excluding skids and plank)
  • Front brake friction material
  • Steering wheel
  • Parameter changes associated with the listed parts replacement

Red Bull Racing Honda RBPT

• Car 22:
  • RHS rear brake duct seal hoop

Aston Martin Mercedes

• Car 18:
  • LHS rear view mirror lense

Alpine Renault

• Car 43:
  • Survival cell (in accordance with Article 27.1)
  • ES (previously used)
  • CE (previously used)
  • Floor assembly (excluding skids and plank)
  • LHS sidepod
  • Front wing/nose assembly
  • Rear wing assembly
  • Rear bodywork coke panel
  • LHS and RHS rear suspension assembly
  • LHS radiator skirt
  • LHS wastegate
  • LHS and RHS front inboard and outboard suspension assemblies
  • Parameter changes associated with the listed parts replacement

Haas Ferrari

• Car 31:
  • Rear beam wing attachment block
• Car 87:
  • Gearbox assembly and associated control hydraulics
  • LHS and RHS rear inboard and outboard suspension assemblies
  • Parameter changes associated with the gearbox assembly replacement

Racing Bulls Honda RBPT

• Car 06:
  • Wastegate heatshield
  • Steering wheel
  • Headrest

Williams Mercedes

• Car 23:
  • LHS front outboard suspension assembly
  • Steering rack assembly
  • LHS outboard brake duct component
  • Front wing/nose assembly
• Car 55:
  • Helmet camera harness

Kick Sauber Ferrari

• Car 27:
  • Front wing/nose assembly
  • RHS front wheel deflector
  • PAS assembly
  • LHS and RHS front track rod
  • Steering column