No, they did not. The Pittsburgh Steelers were Super Bowl champions that year.
Yes they can and will this year !
January 30, 1983 in Super Bowl XVII.
That was January 31, 1988 in Super Bowl XXII for the Washington Redskins.
They did not play in the Super Bowl that year. San Francisco beat Cincinnati 26-21 that year.
On January 22, 1984, the Los Angeles Raiders defeated the Washington Redskins in Super Bowl XVIII in Tampa, 38-9.
The Redskins defeated the Dolphins, 27-17, in Super Bowl XVII played January 30, 1983.
In super bowl 42, the giants beat the undefeated patriots 17-14. But that will change this year in XLVI.
The last Miami Dolphins Super Bowl win was the year after the undefeated season, 1973.
1972 season. They went 14 - 0 in the regular season. Then won the next two playoff games. In Super Bowl VII they beat the Washington Redskins 14 - 7 to have the only unbeaten, untied season at 17 - 0