Sebastian Vettel will have a new chassis for this weekend's Spanish GP with Red Bull insisting it is a normal change.
The reigning World Champion has had a difficult time at the start of this year's Championship and has managed just one podium in four races.
Added to that, Vettel has twice been asked to move aside for team-mate Daniel Ricciardo with Helmet Marko claiming after China that Vettel's chassis may have a crack.
And although Red Bull have not confirmed, the German will have a new chassis this weekend in Barcelona.
"Sebastian will get a new chassis for Barcelona, which was scheduled at the start of the season and then the next one will be for Dan at some time around Silverstone," the team's chief designer Rob Marshall told the Red Bull website.
"Normally we make four or five chassis during the year, maybe six, so it wouldn't be unusual for each driver to change at least once or twice during the year. Normally they would use at least two."
Asked if a chassis change will benefit the German, Marshall said: "It shouldn't be, as the idea is that they are all the same. Drivers don't always want to change them - they can get attached to a particular chassis and when they are on a good run they like to hang on to it for as long as possible!
"From our point of view we'd rather give them one or two new chassis during the season that we have been able to check out in the factory using various testing methods."
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