Red Bull team principal Christian Horner has labelled the extended partnership with Honda past the end of the year as "great news" for the team and revealed power unit parts will be made in Japan through 2023.
Despite Honda's withdrawal from F1 at the end of the season, the two parties agreed to a prolonged partnership covering all motorsport activities and the junior programmes for both Red Bull and Honda.
Red Bull takes over Honda's PU IP for 2022 onwards but had already said the Japanese manufacturer would supply engines from Sakura for the first year of the Red Bull Powertrains initiative.
Horner has suggested, however, the manufacturing of parts will remain in Japan until at least 2024.
Asked how much of a difference the partnership will make between this and next year, Horner replied: "Very little, very little.
"That is great news for Red Bull Powertrains because it really helps hold our hand in this period so obviously, we are assembling a team that are very focused on the new regulations.
"We will not manufacture any parts for 2023, or components. It will need to come from Japan so it would be impossible to take on that. We don't have the facilities or the infrastructure to do that.
"So what... the facilities we are building in Milton Keynes are very much focused on preparations and of course assembling a technical team to deal with the new regulations."