MPA Electrical B1033 Power Brake Booster

Remanufactured Vacuum Brake Booster

MPA Electrical B1033 is a remanufactured vacuum power brake booster for vehicles that need consistent braking assist with reduced pedal effort. Built as a standard replacement unit with a dual diaphragm design and metal housing, it is engineered for direct service on select Chevrolet, Buick, Oldsmobile, and Pontiac applications.

The MPA Electrical brake booster line focuses on restored vacuum sealing, dependable pressure transfer, and end-of-line testing for each unit. This B1033 reman vac pwr brake booster w/o master cyl is supplied without a master cylinder and uses an 11.04-inch diaphragm with a 10 x 1.50 mm master cylinder stud thread size.

Key Features

• Remanufactured vacuum power brake booster
• Dual diaphragm construction for braking assist
• Metal housing for OE-style service replacement
• Master cylinder not included
• Mounting bracket included
• Brake service grade: standard replacement
• 11.04 in. diaphragm diameter
• 10 x 1.50 mm master cylinder stud thread size
• Product condition: remanufactured

Vehicle Fitment

• Fits 1995-1999 Chevrolet Lumina, N/A
• Fits 1995-1999 Chevrolet Monte Carlo, N/A
• Fits 1997 Buick Century, N/A
• Fits 1994-1997 Buick Regal, N/A
• Fits 1994-1997 Oldsmobile Cutlass Supreme, N/A
• Fits 1994-1997 Pontiac Grand Prix, N/A

Detailed Description

Part number B1033 is built for drivers and repair shops servicing vacuum-assisted brake systems on the Chevrolet Lumina and Monte Carlo, Buick Century and Regal, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix. It is a reman vac pwr brake booster w/o master cyl designed to restore pedal assist when the original booster shows signs of vacuum loss, internal diaphragm wear, or reduced braking response.

This unit uses a dual diaphragm layout to deliver braking assist with lower pedal effort, while the treated replacement components are used to support vacuum sealing and pressure transfer. This makes B1033 a practical choice when replacing a worn power brake booster on compatible GM passenger cars from 1994 through 1999.

This part cross-references 18021127 and 18021553 for the same application.

Common Repair Uses

• Hard brake pedal feel
• Loss of vacuum assist during braking
• Reduced stopping response from a worn booster
• Brake system service after booster diaphragm failure
• Replacement for a leaking or weak vacuum brake booster

Installation Notes and Tips

Confirm master cylinder fitment before installation, since the master cylinder is not included with this booster. Verify the 10 x 1.50 mm stud thread size, inspect the mounting surface, and check vacuum hose condition before reassembly. After installation, bleed the brake system as required by the vehicle service procedure and verify proper pedal feel and vacuum assist.

Quality Assurance

MPA Electrical subjects each brake booster to 100% end-of-line testing using proprietary test equipment. The remanufacturing process is focused on vacuum seal integrity, pressure transfer, and consistent braking performance for standard replacement service.