MPA Electrical B1039 Power Brake Booster

Remanufactured Vacuum Brake Booster

MPA Electrical B1039 is a remanufactured vacuum power brake booster for select GM A-body and G-body applications. It is built for drivers who need consistent brake assist with lower pedal effort, using a dual-diaphragm vacuum design and metal housing for standard replacement service.

Compatible With 1982-1988 Chevrolet Monte Carlo, 1982-1987 Buick Regal, and other listed Chevrolet, Oldsmobile, and Pontiac applications, this MPA Brake Booster line is engineered and tested to help restore braking response after booster wear or vacuum seal loss. Part number B1039 is supplied without a master cylinder.

Key Features

• Remanufactured vacuum power brake booster
• Dual-diaphragm design for brake assist delivery
• Metal housing construction
• Standard replacement brake service grade
• Master cylinder not included
• 10 x 1.5 mm master cylinder stud thread size
• Two mounting studs
• Remanufactured condition

Product Details

The MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl is built to restore vacuum-assisted braking performance on select Chevrolet Monte Carlo, Buick Regal, Pontiac Grand Prix, Oldsmobile Cutlass Supreme, and related platforms. MPA remanufactures and tests each unit to help maintain vacuum seal integrity and pressure transfer, which supports more consistent pedal feel and braking assist. Part number B1039 is a direct-fit style replacement for applications that use a vacuum booster without an included master cylinder.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Hard brake pedal feel from a weak or leaking booster
• Reduced vacuum assist during braking
• Inconsistent pedal response under normal driving
• Brake performance loss caused by booster seal wear
• Replacement needs on aging GM rear-wheel-drive platforms

Installation Notes and Tips

• Verify the vehicle uses a vacuum booster and does not require a master cylinder with the booster assembly.
• Confirm master cylinder stud thread size is 10 x 1.5 mm before installation.
• Inspect the vacuum hose, check valve, and master cylinder condition during replacement.
• Match the booster mounting pattern and pedal rod setup to the original application.
• Bleed the brake system after any master cylinder or hydraulic line service.

Quality Assurance

MPA Electrical states that these brake boosters are tested at the end of production using proprietary equipment to verify performance and sealing. The remanufactured process includes replacement and specially treated components to support reliable vacuum operation and pressure transfer.

Compatible With 1982-1988 Chevrolet Monte Carlo, 1982-1987 Buick Regal, 1982-1987 Chevrolet El Camino, 1982-1987 Pontiac Grand Prix, and additional listed 1982-1988 GM applications. Part number B1039 is a practical replacement for restoring vacuum brake assist on supported vehicles.