MPA Electrical B3144 Power Brake Booster

Vacuum Brake Booster Overview

The MPA Electrical B3144 is a remanufactured vacuum power brake booster built for direct brake assist replacement where the master cylinder is not included. It is engineered to deliver strong braking assist with reduced pedal effort and is tested at the end of production for consistent output.

Compatible with select Infiniti and Nissan applications, this brake booster is a fitment-based replacement for drivers needing restored vacuum assist and dependable pressure transfer. The B3144 part number is also referenced by 47210-3Y61A and 47210-3Y610 for the same application.

Key Features

• Remanufactured vacuum booster with standard replacement service grade
• Metal housing for durable brake system construction
• 247.14 mm (9.73 in.) diaphragm diameter
• 8 x 1.25 mm master cylinder stud thread size
• Master cylinder, gasket, seal, and mounting bracket not included
• End-of-line tested for pressure transfer and vacuum seal integrity

Product Details

MPA Electrical reman brake boosters are built around vacuum-assist operation to reduce pedal effort and restore braking response. The B3144 uses a metal housing and a 247.14 mm diaphragm to support consistent assist characteristics, while specially treated components help maintain vacuum sealing and reliable pressure transfer. This unit is a practical replacement for Infiniti I35, Nissan Maxima, and Infiniti I30 brake booster applications when the original booster has lost assist or developed a vacuum leak.

Common Issues This Part May Solve

• Hard brake pedal feel
• Reduced braking assist
• Vacuum leak at the booster
• Inconsistent pedal response
• Loss of pressure transfer through the brake booster

Installation Notes

Verify master cylinder stud thread size, mounting layout, and booster configuration before installation. This B3144 brake booster does not include the master cylinder, brake pedal rod extension, gasket, seal, front seal, or mounting bracket. Confirm fitment against the vehicle application and inspect related brake components during replacement.

Quality Assurance

MPA Electrical subjects each unit to 100% end-of-line testing using proprietary equipment to verify performance before release. The remanufactured construction and tested vacuum-assist design support consistent brake booster operation.