Dallara has played down speculation it is working with Ferrari.
Rumours of a Formula One partnership between the two legendary Italian companies has been going around the paddock, but boss Gian Paolo Dallara has dismissed it as "fable".
"The partnership covers the supply of carbon parts and aerodynamic research on road cars," he told Corriere della Sera newspaper.
He also denied that there was any technology transfer between Ferrari and Haas - a customer of both Dallara and Ferrari
"Not at all, they are two separate worlds," he insisted. "We work for Haas under the direction of Rob Taylor and Ben Agathangelou. Haas, in turn, acquires the powertrain and other parts from Maranello."
Dallara was also asked about Ferrari's current form, and the Italian media's claim that Sebastian Vettel is in 'crisis'.
"He is suffering the frustration of those who want to win but cannot. We will have to see if he can wait - Alonso was not able to," he said. "One of the ingredients of success is patience."
"I have seen droughts of Ferrari for longer than this," added Dallara.
He was also asked about a potential clash between Ferrari and F1's new owners Liberty, who reportedly intend to end Ferrari's huge financial bonusea.
"The new owners should move close to 'la Rossa' (Ferrari) or the world will collapse on them. Without 'il Cavallino' (Ferrari), F1 dies.
"Mercedes cannot save it: if they withdraw, no one notices," he insisted.
Bahrain International Circuit - Winter testing
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