MPA Electrical B3148 Power Brake Booster

Remanufactured Vacuum Brake Booster for BMW X5

MPA Electrical B3148 is a remanufactured vacuum power brake booster built for 2000-2006 BMW X5 applications. It is engineered to deliver strong braking assist with reduced pedal effort, making it a direct replacement for worn or failing booster units on the BMW X5.

The MPA Electrical brake booster line focuses on vacuum seal integrity, consistent pressure transfer, and end-of-line testing. This reman vac pwr brake booster w/o master cyl is supplied without the master cylinder, so it is the correct choice when replacing the booster assembly only.

Key Features

• Part number B3148
• Remanufactured vacuum booster, standard replacement grade
• Designed for 2000-2006 BMW X5 brake booster replacement
• 10.77 in. diaphragm diameter (273.56 mm)
• Metal housing construction
• 2 mounting studs
• Master cylinder stud thread size: 8 x 1.25 mm
• Master cylinder not included
• Brake pedal rod extension not included
• Gasket or seal not included
• Front seal not included

Detailed Description

MPA Electrical B3148 is a remanufactured vacuum brake booster for BMW X5 models from 2000 through 2006. It is built to restore brake assist by using engine vacuum to reduce pedal effort and improve braking response. The unit is remanufactured with treated replacement components and tested at the end of production to verify performance before it leaves the factory.

This part cross-references Genuine 34336760461 and Interchanges 34331165715 for the same application. If you are servicing a BMW X5 with a weak pedal, hard brake feel, or a booster that no longer holds vacuum, B3148 provides a direct replacement path for the booster assembly.

What It Helps Fix

• Hard brake pedal feel
• Reduced brake assist from vacuum loss
• Brake booster vacuum leak symptoms
• Inconsistent pedal response during braking
• Booster wear on 2000-2006 BMW X5 vehicles

Installation Notes

Verify master cylinder transfer, pushrod setup, and mounting stud alignment before installation. Because the master cylinder is not included, reuse or replace related brake components as needed during service. Confirm vacuum hose condition and inspect the brake system for leaks before returning the vehicle to service.

Compatible With 2000-2006 BMW X5, N/A. Part number B3148 should be matched to the vehicle’s brake system configuration before installation.

Quality Assurance

MPA Electrical states that each booster is subjected to 100% end-of-line testing using proprietary test equipment. The remanufactured design uses new replacement and specially treated components to support vacuum sealing and pressure transfer performance.