The World Motor Sport Council has ratified the engine proposal put forward by the Formula 1 Commission, paving the way for its enforcement next year.
Autosport revealed earlier on Friday that F1 bosses had come to an agreement on cost, availability of supply, performance convergence and noise of engines.
The FIA has now confirmed the proposal will be included in the technical and sporting regulations for the 2017 and 2018 world championships.
"The FIA is pleased to announce that, following extensive work done in conjunction with the four power unit manufacturers involved in the FIA Formula 1 World Championship, and with the support of the commercial rights holder, a global agreement on power units has been reached for the 2017-2020 period," said an FIA statement.
"The agreement has been approved by all levels of the F1 governance structure, including the World Motor Sport Council.
"It will now be included as technical and sporting regulations for the 2017 and 2018 FIA Formula 1 world championship.
"The global agreement on power units covers four key areas relating to the cost and supply price, obligation to supply, performance convergence and the sound of the power units."
The move is seen as a success for the FIA, which has been pushing extensively for cost reductions.