1982 and 1989
They did not play in the Super Bowl that year. San Francisco beat Cincinnati 26-21 that year.
The Bengals have made two Super Bowl appearances, 1981 and 1988 seasons. They lost both.
1982 (Super Bowl XVI) They played the Cincinnati Bengals in Pontiac MI and won 26-21
Super Bowl XVI was played January 24, 1982. The San Francisco 49ers defeated the Cincinnati Bengals, 26-21.
2003 was the year the Super Bowl XXXVII was played.
Super Bowl V was played in the year 1971.
Super Bowl XLV (45)
The two teams faced off in the Super Bowl in the year 2005 which was Super Bowl XXXIX(39).
Super Bowl III