"Always…" the caption reads.
The 48-year-old posted a similar throwback picture late last month.
"Many of the crew members who have worked on several of the past Fast films are here again to help us make something special," Diesel wrote. "One of them at the end of the week came up to me and said wow what we are capturing on film is excellent... And then looked at me and said Paul would be proud #wemakethemwithourhearts."
Walker tragically died in November 2013, after the Porsche he was riding in with friend and race car driver,Roger Rodas, hit a tree and burst into flames.