MPA Electrical B3792 Power Brake Booster

Remanufactured Vacuum Brake Booster

MPA Electrical B3792 is a remanufactured vacuum power brake booster for select Infiniti G35 and Nissan 350Z applications. It is built for drivers who need consistent brake assist and a firm, predictable pedal feel in a standard replacement format.

The MPA Electrical brake booster line focuses on restored vacuum sealing, dependable pressure transfer, and end-of-line testing for finished units. This B3792 reman vac pwr brake booster w/o master cyl is supplied without a master cylinder, making it a direct replacement choice when the booster is the failed component.

Key Features

• Part number B3792
• Remanufactured vacuum booster construction
• Standard replacement brake service grade
• Metal housing for durable mounting support
• 247.4 mm / 9.74 in 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
• Gasket or seal not included

Product Details

Designed as a vacuum-operated power brake booster, this unit helps restore brake assist on vehicles that rely on engine vacuum to reduce pedal effort. The remanufactured design uses specially treated replacement components to support vacuum sealing and pressure transfer, and each unit is tested at the end of the production line before release. B3792 is a practical replacement for 2004-2006 Infiniti G35 and 2004-2006 Nissan 350Z brake booster service.

This part cross-references OE-style numbers 47210AC425 and 47210CD725 for the same application. The MPA Electrical B3792 is a fitment-based replacement for Infiniti G35 and Nissan 350Z brake booster service where the original vacuum booster has lost assist or sealing performance.

What It Helps Fix

• Hard brake pedal feel
• Reduced brake assist from vacuum loss
• Inconsistent pedal response during braking
• Booster leakage that affects vacuum retention
• Brake assist issues on 2004-2006 Infiniti G35 and 2004-2006 Nissan 350Z

Installation Notes

Verify master cylinder stud thread size, mounting stud layout, and booster dimensions before installation. Transfer or replace related brake components as needed during service, and confirm proper vacuum supply, pedal travel, and brake operation after installation. Because the master cylinder is not included, reuse or replace the existing master cylinder separately if required by the repair.

Quality Assurance

MPA Electrical states that its brake boosters are tested using proprietary end-of-line equipment to confirm performance before shipment. The remanufactured B3792 is built to deliver reliable brake assist for compatible Infiniti G35 and Nissan 350Z applications.