Proflow Power Brake Booster Restoration Stamped GM A-F-X 1964-72, 9in., Black

These GM single diaphram brake boosters suit 1964-1972 GM A-F-X body cars and features a 9" outside diameter booster which can produce up to 1000 PSI with 18" of vacuum. A firewall mounting plate is included and they are available in a variety of finishes. Master cylinder bolt patern = 3-3/8" square bolt pattern Great replacement or addition to your manual brake car