Who were the quarterbacks for the Oakland Raiders when they won there 3 super bowls?

Ken Stabler (1977) and Jim Plunkett (1981, 1984)

Stabler won Super Bowl XI in 1977, 32-14 over Minnesota Vikings.

Plunkett was MVP, in winning Super Bowl XV in 1981, 27-10 over Philadelphia Eagles. He won again in Super bowl XVIII in 1984, 38-9 over the Washington Redskins*.

*From 1982 to 1994, the team played as the Los Angeles Raiders.