This is a remanufactured master cylinder to fit these model Buicks with power brakes listed below.
Number of Ports 2
Primary Port Thread A 9/16"-18
Secondary Port Thread A 1/2"-20
Fitment:
APOLLO 1975
CENTURION 1971-1973
CENTURY 1973-1977
ELECTRA 1971-1980
ESTATE WAGON 1971-1980
GS 1970-1972
GS 350 1968-1969
GS 400 1968-1969
GS 455 1970-1972
LESABRE 1971-1980
REGAL 1973-1977
RIVIERA 1971-1978
SKYHAWK 1975
SKYLARK 1967-1979
SPECIAL 1969
SPORTWAGON 1967-1972