As exclusively revealed by Autosport, the Swiss star will return to Supercars for the first time since departing the series at the end of 2019.
She will campaign a DJR Ford Mustang at the Bathurst 1000, which she'll share with teenage sensation Allen. The de Silvestro/Allen entry will be backed by Shell V-Power and run as #98 as a tip of the hat to Shell's premium 98 octane fuel.
"I am thrilled to race back at the iconic track in Bathurst and want to thank DJR and Shell V-Power for this amazing opportunity," said de Silvestro.
"Four years has been too long but who would have thought in 2019 that I would not be able to travel to Australia for such a long time.
"I am looking forward to teaming up with young talent Kai and I am sure we will make a great team."
Allen, who scored a breakthrough first Super2 win earlier this month, is thought to be a considered a long-term prospect for DJR.
There is even talk that he has a deal with the team beyond the wildcard, although the team declined to comment on that when asked by Autosport.
Source: Autosport