MPA Electrical B1091 Power Brake Booster

Reliable Vacuum Power Brake Booster Replacement

The MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl (Part Number B1091) offers a dependable solution for restoring brake assist performance. Designed as a remanufactured unit, it provides a standard replacement option for select Buick, Chevrolet, Oldsmobile, and Pontiac models.

• Remanufactured vacuum power brake booster
• Dual diaphragm design with 230.63 mm (9.08 inch) diameter
• Metal housing for durability
• Standard replacement grade for brake service
• Compatible with Buick Century, Chevrolet Malibu, Pontiac Grand Prix, and other GM models
• Does not include master cylinder, gasket, or mounting hardware
• Master cylinder stud thread size: 10 x 1.50 mm
• Two mounting studs for secure installation

Product Line Overview: Reman Vac Pwr Brake Booster w/o Master Cyl

This product is part of the MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl line, which focuses on remanufactured vacuum brake boosters without the master cylinder included. This line is intended for customers seeking a reliable booster replacement that meets standard brake service requirements while allowing reuse of existing master cylinders and mounting components.

Detailed Product Description

The B1091 power brake booster features a dual diaphragm vacuum design, providing consistent brake assist for improved pedal feel and stopping power. Its metal housing ensures structural integrity and long-term durability under typical operating conditions. The booster’s diaphragm diameter measures approximately 230.63 mm (9.08 inches), suitable for the specified GM vehicle applications. This unit is a remanufactured part, meeting standard replacement criteria to restore braking performance without the need for a full master cylinder replacement.

Compatible Vehicles and Common Applications

• Buick Century, Regal
• Chevrolet Malibu, Monte Carlo, El Camino
• Oldsmobile Cutlass, Cutlass Supreme, Cutlass Calais, Cutlass Cruiser, Cutlass Salon, LeMans, Grand LeMans
• Pontiac Grand Am, Grand Prix

This booster is designed specifically for these models, ensuring proper fitment and brake system compatibility.

Common Issues Addressed by This Brake Booster

• Reduced brake pedal assist or hard brake pedal feel
• Vacuum leaks causing poor brake performance
• Worn or damaged diaphragms affecting brake responsiveness
• Brake booster failure leading to increased stopping distances
• Replacement of a faulty or leaking power brake booster without master cylinder replacement

Installation Notes and Tips

Installation requires removal of the existing power brake booster. Since this unit does not include a master cylinder, gasket, or mounting hardware, reuse of existing components is necessary. Verify the master cylinder stud thread size (10 x 1.50 mm) and mounting stud quantity (2) for compatibility. Ensure all vacuum lines and connections are properly sealed to prevent leaks. Professional installation is recommended to maintain brake system safety and performance.

Quality Assurance and Warranty

The B1091 power brake booster is a remanufactured product that meets standard brake service grade requirements. It undergoes thorough inspection and testing to ensure functionality and reliability. Warranty coverage details should be confirmed with the supplier or manufacturer, as they may vary.