Power Brake Booster; Booster; Vacuum Booster. Part Type: Power Brake Booster. Pwr Brake Booster. Remanufactured Vacuum Power Brake Booster. Booster Type: Vacuum. Notes: GM Brake Code JB9; with Light Duty Brakes; GM Brake Codes are on the "Service Parts Identification" Sticker; without Master Cylinder;.
