Williams driver George Russell will take a new power unit for this weekend's second Formula 1 race of the season, the Styrian Grand Prix.
Russell retired on lap 49 of the 71-lap season-opening race in Austria on Sunday after suffering a loss of fuel pressure at a time when he was in the hunt for a possible points-scoring finish.
The Mercedes PU was shipped back to the High Performance Powertrains factory at Brixworth for an investigation and systems tests that discovered a gear drive failure.
It means Russell will now run with a new internal combustion engine, turbocharger and MGU-H for the return to the Red Bull Ring.