The Pro Football Hall of Fame announced Wilcox's death. A cause of death wasn't revealed but the Hall of Fame said Wilcox recently underwent heart surgery.
Wilcox was a seven-time Pro Bowl selection, including six straight seasons from 1968-73. He had 14 interceptions and 12 fumble recoveries in 153 games (144 starts) and was inducted into the Hall of Fame in 2000.
"While Dave Wilcox was a nicknamed 'The Intimidator' for his aggressive style of play, he was a kind, humble and gracious man in all other aspects of life," Hall of Fame president Jim Porter said in the announcement.