Parts and Parameters Been Replaced and/or Changed During Parc Fermé
Mexico City Grand Prix · 2026 · 1 November 2026 · Doc 66
2026 MEXICO CITY GRAND PRIX
30 October - 01 November
Technical Delegate's Report The following parts and parameters have been replaced / changed during the Parc Fermé yesterday
and today:
McLaren Mercedes: Car 81: ICE (previously used) MGU-K (previously used) EXH (previously used)
PU hydraulic assemblies
Centre intake cooling duct Radiator assemblies Oil-water heat exchanger Parameter changes associated with the PU elements replacement Mercedes: Car 63: RHS front caketin bulkhead Car 12: Floor bib stay RHS rear brake drum Red Bull Racing RB Ford:
Car 06: Lift pump tower assembly
Ferrari:
Car 16: RHS rear brake disc IR sensor assembly
From The FIA Formula 1 Technical Delegate
To The Stewards
Document 66 Date 01 November 2026 Time 12:50
Headrest
Car 44: Low pressure fuel pump
Racing Bulls RB Ford:
Car 41: LHS front brake duct foam seal
Aston Martin Aramco Honda:
Car 18: LHS and RHS rear upper wishbone shrouds ICE (previously used) TC (previously used) ES (previously used) CE (previously used) ANC components (previously used) Parameter changes associated with the PU elements replacement ES header tank QD
Car 14: MGU-K (previously used) Parameter changes associated with the MGU-K replacement Roll hoop winglets ERS and ICE waterpump assembly ICE crank seal Flywheel Driver's radio harness Steering wheel
Haas Ferrari:
Car 87: BBW unit Parameter changes associated with the BBW unit replacement
Audi:
Car 05: Parameter changes associated with the ES software
Alpine Mercedes:
Car 10: PU sump protection bumper
LHS rear suspension gaitor panel RHS front rim seal
Cadillac Ferrari:
Car 11: Front floor structure brackets
Car 77: ANC (new)
All above parts have been replaced with the approval of the FIA technical delegate following a written request from the team concerned, this being in accordance with Article B3.5.4 of the 2026 Formula One Sporting Regulations.