MPA Electrical B3020 Power Brake Booster

Remanufactured Vacuum Brake Booster for Honda Civic

Restore consistent brake assist with this remanufactured vacuum power brake booster from MPA Electrical. Built for 1993-1997 Honda Civic del Sol and 1993-1995 Honda Civic applications, MPA B3020 is engineered to deliver strong vacuum assist with reduced pedal effort for everyday stopping performance.

Key Features

• Remanufactured vacuum-type power brake booster
• Standard replacement brake service grade
• Metal housing for durable construction
• 250.24 mm diaphragm diameter
• 8 x 1.25 mm master cylinder stud thread size
• 2 mounting studs
• Master cylinder not included
• Brake pedal rod extension not included

Product Details

MPA Electrical B3020 is a reman vac pwr brake booster w/o master cyl designed for direct replacement in select Honda compact models. It is built to help maintain vacuum seal integrity and pressure transfer, supporting firm, predictable brake assist when the pedal is applied. This part cross-references Honda OE numbers 46400SR3911 and 46400SR3921 for the same application. The B3020 is a practical choice for drivers servicing a Honda Civic or Civic del Sol brake system where the booster has lost assist, developed a vacuum leak, or no longer holds pedal feel consistently.

Vehicle Fitment

• Fits 1993-1997 Honda Civic del Sol, N/A
• Fits 1993-1995 Honda Civic, N/A

Common Issues This Part Can Address

• Hard brake pedal feel
• Reduced brake assist from vacuum loss
• Inconsistent pedal response during braking
• Booster diaphragm or seal wear
• Brake system performance concerns tied to a failing booster

Installation Notes and Tips

Verify master cylinder compatibility before installation, since the master cylinder is not included. Confirm the 8 x 1.25 mm stud thread size, mounting stud count, and pedal linkage setup against the original unit before removal. Inspect vacuum supply lines, check valves, and related brake components during service so the replacement booster can operate correctly in the vehicle.

Quality Assurance

MPA Electrical states that each booster is tested at the end of production using proprietary equipment to verify performance before release. New replacement and specially treated components are used to support vacuum sealing, pressure transfer, and overall brake assist consistency.