Dillon became a significant offensive weapon for the 2004 Patriots, recording 1,635 rushing yards (franchise record) and 12 touchdowns, both career highs, and was named to the Pro Bowl for the fourth time in his career. He also caught 15 passes for 103 yards and another touchdown. His contributions helped lead the team to break the NFL record for the most consecutive regular season victories (18), the record for the most consecutive overall victories (21) and earned the second best regular season record during the year at 14–2. The team's only losses during the year were to the Pittsburgh Steelers, who ended up with the league's best regular season record at 15–1, and a 29–28 loss to the Miami Dolphins on ABC's Monday Night Football.