1965 - 1968 911 Front Left Or Right
1969 - 1969 911 Front Left Or Right. Rear Left Or Right
1970 - 1975 911 Front Left Or Right, Only for cars with "M" Calipers. Rear Left Or Right
1976 - 1985 911 Rear Left Or Right
1986 - 1989 911 Carrera Rear Left Or Right