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New MGU-K in all Renault-powered cars in China after multiple failures

Renault has made its new specification MGU-K engine part available to both its works cars and the McLaren team it supplies for China in a bid to improve reliability

The Renaults of Daniel Ricciardo and Nico Hulkenberg lost valuable points when they stopped almost simultaneously in the closing stages in Bahrain.

The team subsequently discovered that both retirements were related to the MGU-K failure suffered by McLaren's Carlos Sainz in the Australian GP.

After the Spaniard's retirement, a revised part was readied for Bahrain and was used in his car, but a second spare example was not utilised that weekend.

However after the Bahrain problems all four Renault powered cars have the new specification in China.

"The retirements were completely related to the MGU-K problem," Renault F1 team boss Cyril Abiteboul told Autosport.

"It was extremely clear for Daniel, but it was also related to that for Nico, except that for Nico we also had to change the power unit out of precaution.

"It was a little bit the same thing as for Carlos in Australia, the failure of the MGU-K triggered some damage to the rest of the engine."

Abiteboul confirmed that one spare new MGU-K was available in Bahrain, but not used.

"The update was triggered by what happened to Carlos in Melbourne.

"We only had two parts available for Bahrain, one to go with Carlos to replace the one that had the failure in Melbourne, and one that was available as a spare for the two teams.

"But it was decided not to replace any of them out of precaution. And obviously this weekend we are able to change for all cars."

Asked why both cars retired at exactly the same time in Bahrain Abiteboul said: "It was a sign of God!

"It was a pure coincidence, but clearly an indication that we needed to get it sorted.

"So the MGU-K is sorted for this weekend.

"Having said that we have had a number of issues unrelated to the MGU-K since the season started, the qualifying in Melbourne we had a problem, the qualifying in Bahrain we had a problem, and it's important that we now put that behind and get things in order."

Hulkenberg, who is already onto his second V6 of 2019, said he is keen to move on from the Bahrain disappointment.

"We looked into it and we're working on reliability and getting on top of the situation," said the German.

"It's a pity because we lost a great result there, but also it's gone and at one point you have to let it go and move on.

"For me, it was a failure on the PU side and we had a problem there so we're onto my second engine now.

"Obviously since the beginning of the season there has been several issues on the MGU-K side and on the Renault engines we are on the redesigned MGU-K which should take care of the issues that we've seen.

"It's further ongoing work to improve things."

Hulkenberg has a new internal combustion engine, turbocharger, MGU-H, MGU-K and control electronics for China.

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