OER PB1086B Features:

GM style 9" single diaphragm brake booster. This Delco style brake booster will work on a variety of 1964-72 GM models (but is original style for 1964-66 models). Includes the brackets to bolt directly to the firewall on a wide variety of Chevrolet, Buick, Oldsmobile, and Pontiac models (as listed) or can be installed on custom applications where space is at a premium. Includes clevis, push rod extension, nuts, washers, & dust boot. Specifications: Specifications: Brake Booster Diameter: 9" Single Brake Booster Type: Vacuum Diaphragm Brake Booster Finish: Black Mounting Pattern: Bracket Master cylinder mounting stud size: 3/8"-18 Master cylinder measurements: 3-3/8" center-to-center Brake Booster Diameter: 9" Single Brake Booster Type: Vacuum Diaphragm Brake Booster Finish: Black Mounting Pattern: Bracket Master cylinder mounting stud size: 3/8"-18 Master cylinder measurements: 3-3/8" center-to-center Buick Applications: