Ferrari, Renault forced to change power unit components

Ferrari and Renault have fitted new power unit components for this weekend's Chinese Grand Prix.

After fears that his engine would be damaged after his issues in Bahrain, Ferrari confirmed earlier this week that Charles Leclerc would continue to use the engine this weekend.

However, it has changed the control electronics in both his and teammate Sebastian Vettel's car, as well as both Haas', who is powered by Ferrari.

Three out of the four Renault-powered cars have had a new MGU-K fitted, with Carlos Sainz, who introduced a new MGU-K in Bahrain after problems in Melbourne, keeps his Bahrain spec.

Drivers can use a maximum of two control electronics throughout the season penalty-free. 

Renault has brought an upgraded MGU-K to Shanghai this weekend in an attempt to put a halt to reliability concerns. 

Nico Hulkenberg has had a series of new components fitted after he retired towards the end of the Bahrain Grand Prix two weeks ago. As well as the MGU-K, Renault has installed a new engine, turbocharger and MGU-H.