Now Diesel has paid his friend one of his most tear-jerking tributes to date, singing a few lines of a song dedicated to him in a recent interview for their movie Furious 7. Watch Diesel sing below:
The song, "See You Again" by Charlie Puth and Wiz Khalifa, is used at the end of the film for an emotional scene between Diesel and Walker's characters, Dom and Brian. Here it is in full: