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FIA report details parc-fermé changes at 2026 Mexico City GP

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Jo Bauer's report lists component replacements and parameter changes, including multiple entries for McLaren's car 81.

The FIA approved component replacements during parc fermé at the 2026 Mexico City Grand Prix after written requests from teams, according to a report by technical delegate Jo Bauer. The document also lists parameter changes and says the replacements were made in accordance with Article B3.5.4 of the 2026 Formula One Sporting Regulations.

McLaren's car 81 is listed with previously used ICE, MGU-K and EXH components. The entry also includes power-unit hydraulic assemblies, a centre intake cooling duct, radiator assemblies and an oil-water heat exchanger, as well as parameter changes associated with replacement of power-unit elements.

Other entries include a lift pump tower assembly for Red Bull Racing's car 06, a left-front brake-duct foam seal for Racing Bulls' car 41 and a right-rear brake-disc IR sensor assembly for Ferrari's car 16.

Sources 01
  1. PRIMARY SOURCEDoc 66 - Parts and Parameters been replaced and or changed during Parc FermeFIA F1 decision documents