MPA Electrical B1091 Power Brake Booster

Remanufactured Vacuum Brake Booster

MPA Electrical B1091 is a remanufactured vacuum power brake booster for select GM A-body and G-body applications from 1979-1981. It is built for drivers who need consistent brake assist, reduced pedal effort, and dependable vacuum sealing in a standard replacement format.

This reman vac pwr brake booster w/o master cyl is engineered for direct replacement service on Buick Century, Buick Regal, Chevrolet El Camino, Chevrolet Malibu, Chevrolet Monte Carlo, Oldsmobile Cutlass, and Pontiac Grand Prix applications listed below. Part number B1091 is also cross-referenced to 18006497 and 18015935 for the same application.

Key Features

• Remanufactured standard replacement brake booster
• Vacuum booster design with dual diaphragm construction
• Metal housing for durable brake system service
• 230.63 mm / 9.08 in diaphragm diameter
• Master cylinder stud thread size: 10 x 1.50 mm
• Two mounting studs
• Master cylinder not included
• Brake pedal rod extension not included
• Mounting bracket, gasket or seal, and front seal not included

Product Details

MPA Electrical reman brake boosters are built with new replacement and specially treated components to improve vacuum sealing, pressure transfer, and overall braking response. Each unit is end-of-line tested with proprietary equipment to verify performance before release. B1091 is a vacuum-type, dual-diaphragm booster designed to restore brake assist on vehicles that rely on a vacuum power brake system.

For shoppers searching for a remanufactured vacuum brake booster for 1979-1981 Buick Century or 1979-1981 Chevrolet Monte Carlo, this unit provides the correct service-style replacement path when the original booster has lost assist or vacuum integrity. It also serves 1979-1981 Oldsmobile Cutlass and 1979-1981 Pontiac Grand Prix brake system repairs where the booster is the failed component.

What It Helps Fix

• Hard brake pedal feel
• Reduced power brake assist
• Vacuum leakage at the booster
• Inconsistent pedal response during braking
• Brake system performance loss caused by a worn booster diaphragm or housing seal

Installation Notes

• Verify vacuum brake booster style, diaphragm size, and mounting stud thread before installation.
• Master cylinder is not included, so reuse or replace it separately as needed.
• Inspect the brake pedal rod, firewall mounting area, and vacuum supply line before assembly.
• Confirm fitment against the vehicle listing for 1979-1981 Buick Century, Buick Regal, Chevrolet El Camino, Chevrolet Malibu, Chevrolet Monte Carlo, Oldsmobile Cutlass, Oldsmobile Cutlass Calais, Oldsmobile Cutlass Cruiser, Oldsmobile Cutlass Salon, Oldsmobile Cutlass Supreme, Pontiac Grand Am, Pontiac Grand LeMans, Pontiac Grand Prix, and Pontiac LeMans.

Quality Assurance

MPA Electrical remanufactured brake boosters are 100% end-of-line tested using proprietary equipment to confirm braking assist performance and vacuum integrity before shipment.