MPA Electrical B3003 Power Brake Booster

Remanufactured Vacuum Brake Booster

The MPA Electrical B3003 is a remanufactured vacuum power brake booster for select Honda and Acura applications. It is built for standard replacement service and is designed to deliver strong braking assist with reduced pedal effort.

This reman vac pwr brake booster w/o master cyl is a direct-fit style replacement for vehicles that use an 8.99-inch diaphragm and a metal housing. It is a practical choice for restoring brake pedal feel on Acura Integra, Honda Accord, Honda Civic del Sol, Honda Prelude, and Honda Civic models.

Key Features

• Brand: MPA Electrical
• Part number: B3003
• Remanufactured vacuum booster for standard replacement service
• Metal housing construction
• 228.35 mm / 8.99 in diaphragm diameter
• 2 mounting studs with 8 x 1.25 mm master cylinder stud thread size
• 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 engineered to restore vacuum-assisted braking performance with minimal pedal effort. The B3003 uses new replacement and specially treated internal components to help maintain vacuum sealing, pressure transfer, and consistent assist characteristics. Each unit is end-of-line tested with proprietary equipment before release.

For fitment-focused searches, this part is commonly referenced for 1990-1997 Acura Integra, 1990-1997 Honda Accord, 1995-1997 Honda Civic del Sol, 1992-1996 Honda Prelude, and 1992-1995 Honda Civic applications. This part cross-references 46400SK7A02 for the same application.

What It Helps Address

• Hard brake pedal feel
• Reduced vacuum brake assist
• Inconsistent pedal response during braking
• Brake booster leakage related to worn internal seals
• Loss of braking assist on older Honda and Acura vehicles

Installation Notes

Verify booster dimensions, mounting stud pattern, and master cylinder thread size before installation. Transfer or replace related brake system components as needed, and confirm proper vacuum supply, pushrod alignment, and pedal travel after installation. This part is listed without a master cylinder, so the existing master cylinder must be evaluated separately.

Quality Assurance

MPA Electrical subjects each remanufactured booster to 100% end-of-line testing using proprietary test equipment. The process is used to confirm vacuum seal integrity and pressure transfer performance before the part is released for service.