Toro Rosso will be allowed to run year-old Ferrari engines in 2016 after the FIA confirmed 2015-spec power units will be allowed to race next year.
After parent company Red Bull fell out with engine supplier Renault, the identity of Toro Rosso's 2016 power unit has been in question. No formal deal has been announced, but a ruling from the FIA's World Motor Sport Council (WMSC) on Wednesday revealed Ferrari is positioned to supply a team with year-old engines next year.
"Power Units homologated in previous seasons may now be re-homologated," the statement read. "Previously no manufacturer could supply more than one specification of PU. The World Motor Sport Council was also advised that the FIA had agreed for Ferrari to supply a fourth customer team with a 2015-specification Power Unit in 2016."
Toro Rosso last ran Ferrari power units in 2013 before switching to Renault ahead of the introduction of the current regulations in 2014. Red Bull is expected to continue with Renault power units next year, although exact details of the deal are yet to be confirmed.
The WMSC also rubber stamped new allocations of engine tokens for the coming years after the regulations were altered for 2016 to allow Renault and Honda to catch up. The allocation through to 2019 will be as follows:
2016 - 32 tokens
2017 - 25 tokens
2018 - 20 tokens
2019 - 15 tokens
Any new power unit manufacturer will be allocated 15 tokens in their first year, and 32 in their second.