James Taylor, 20, of Suisun City, was shot in the head around 5:45 p.m. while riding in a car in the 300 block of Canvasback Drive.
He was taken to John Muir Medical Center in Walnut Creek where he was placed on life support. He died Saturday, according to the Solano County coroner's office.
The driver of the car, Derico Hughes, 21, of Suisun City, suffered a gunshot wound to the hand, police said.
Police said the victims were driving east on Canvasback Drive when the suspects' vehicle pulled up alongside their car and someone inside fired several shots. The victims' car then crashed into a parked SUV, police said.
Dominic Rasheed Foster, 18, of Suisun City, was arrested Friday, police said. Police are looking for the other suspect, 18-year-old Aaron Bragg, of Suisun City.
Police said Bragg might be driving a four-door 2000 Pontiac Grand Am with tinted windows.
Anyone with information about the shooting is asked to call Suisun City police at (707) 421-7373.