The longest touchdown in Steelers history was a pass caught by Mark Malone which covered 90 yards. It was thrown by Terry Bradshaw against the Seattle Seahawks on November 8, 1981.
Willie Parker's longest run for the Steelers was an 80 yard touchdown. It was on December 24, 2005, against the Cleveland Browns.
Mark Malone, 99 yards
Mark Malone caught the longest touchdown pass in Steelers history which covered 90 yards. It was thrown by Terry Bradshaw against the Seattle Seahawks on November 8, 1981.
Players for the Steelers that have worn #83 the longest are WR Louis Lipps (1984-1991), WR Theo Bell (1976-1980), and TE/K Mike Clark (1964-1967). The current Steeler wearing #83 is TE Heath Miller, who started his career with the Steelers in 2005.
Offensively, the longest play from scrimmage is the Pittsburgh Steelers "Fast" Willie Parkers 75 yard touchdown run in Super Bowl XL(40) against the Seattle Seahawks. Defensively, the longest play is the Pittsburgh Steelers James Harrisons 100 yard interception return for a touchdown in Super Bowl XXIII(43).
80 yards by Kordell Stewart of the Pittsburgh Steelers against the Carolina Panthers on December 22, 1996.
It is wide receiver Hines Ward. He is currently in his 14th season with the Steelers.
The longest pass completion in Steelers history is 95 yards. Ben Roethlisberger to Mike Wallace on October 23, 2011.