MPA Electrical B3790 Power Brake Booster

Reman Vacuum Brake Booster for Nissan Maxima

Restore consistent brake assist with this remanufactured vacuum power brake booster from MPA Electrical. Built for 2004-2008 Nissan Maxima applications, Part Number B3790 is a standard replacement booster engineered for reliable vacuum sealing and smooth pressure transfer with reduced pedal effort.

MPA Electrical’s Reman Vac Pwr Brake Booster w/o Master Cyl line focuses on remanufactured brake assist components that are cleaned, treated, and tested for dependable operation. This B3790 unit is a direct-fit vacuum booster for Nissan Maxima brake service where the master cylinder is not included.

Key Features

• Fits 2004-2008 Nissan Maxima, N/A
• Remanufactured vacuum power brake booster
• Standard replacement brake service grade
• Metal housing construction
• 247.4 mm 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/seal, and front seal not included
• Part Number B3790

Detailed Description

MPA Electrical B3790 is a remanufactured vacuum power brake booster built for 2004-2008 Nissan Maxima models. It is designed to deliver strong braking assist with lower pedal effort by maintaining a stable vacuum seal and consistent pressure transfer through the booster assembly. The metal housing and treated replacement components support dependable brake system service in a standard replacement application. Part Number B3790 is also referenced by OE cross-reference 472107Y015 for the same application.

Common Brake Issues It Can Address

• Hard brake pedal feel
• Reduced brake assist during stops
• Vacuum leak symptoms at the booster
• Inconsistent pedal response
• Brake system performance loss from a worn booster

Installation Notes and Tips

Verify the master cylinder is transferred or sourced separately, since it is not included with this booster. Confirm the 8 x 1.25 mm master cylinder stud thread size, the 2-stud mounting pattern, and the vehicle’s brake pedal rod setup before installation. Inspect vacuum supply, check valves, and brake lines during service to help ensure proper brake assist after replacement.

Quality Assurance

MPA Electrical subjects each unit to 100% end-of-line testing using proprietary test equipment to confirm function before release. The remanufacturing process uses new replacement and specially treated components to support vacuum sealing, pressure transfer, and overall booster performance.