MPA Electrical B1111 Power Brake Booster

Reman Vacuum Brake Booster for Camaro and Firebird

MPA Electrical B1111 is a remanufactured vacuum power brake booster for classic GM muscle car applications. It is built for 1970-1977 Chevrolet Camaro and 1970-1977 Pontiac Firebird models that use a vacuum booster without a master cylinder.

Key Features

• Remanufactured standard replacement brake booster
• Vacuum booster design with single diaphragm construction
• 10.8 in. diaphragm diameter for braking assist
• Metal housing for durable brake system service
• Mounting bracket included
• Master cylinder not included
• Brake pedal rod extension not included
• Front seal and gasket or seal not included
• Master cylinder stud thread size: 3/8-16

Product Details

The MPA Electrical B1111 reman vac pwr brake booster w/o master cyl is engineered to deliver strong vacuum-assisted braking with reduced pedal effort. New replacement and specially treated internal components are used to support vacuum sealing, pressure transfer, and consistent brake assist. Each unit is 100% end-of-line tested with proprietary equipment before release.

This part cross-references part number 18000021 for the same application. It is a direct-fit style brake booster for Chevrolet Camaro and Pontiac Firebird vehicles within the listed model years, making it a practical choice for restoring brake pedal feel on classic performance cars.

Common Issues This Part Addresses

• Hard brake pedal feel caused by booster wear
• Reduced vacuum assist during braking
• Loss of braking response from internal diaphragm or seal deterioration
• Brake system service needs on original vacuum booster assemblies
• Replacement of a remanufactured booster without a master cylinder

Installation Notes

Verify vacuum supply, pedal linkage condition, and master cylinder compatibility before installation. This booster uses a 3/8-16 master cylinder stud thread size and includes a mounting bracket, but does not include a master cylinder, brake pedal rod extension, gasket or seal, or front seal. Confirm fitment against the vehicle’s brake system layout before assembly.

Quality Assurance

MPA Electrical subjects each brake booster to 100% end-of-line testing using proprietary test equipment to confirm function before shipment. The remanufactured construction and treated replacement components are used to support reliable vacuum sealing and consistent brake assist.