MPA Electrical B3154 Power Brake Booster

Power Brake Booster Overview

MPA Electrical B3154 is a remanufactured vacuum power brake booster built for standard replacement applications. It is engineered to deliver strong braking assist with reduced pedal effort, and it is tested at the end of production to verify performance.

Key Features

• Vacuum booster design for consistent brake assist.
• Remanufactured metal housing for standard replacement use.
• 246.89 mm diaphragm diameter for proper assist output.
• 8 x 1.25 master cylinder stud thread size.
• Master cylinder, gasket, seal, and pedal rod extension are not included.
• Two mounting studs for secure installation.

Detailed Description

This MPA Electrical power brake booster is a remanufactured vacuum unit designed to restore braking assist in vehicles that rely on vacuum-operated brake boost. The B3154 uses specially treated replacement components to support vacuum sealing and pressure transfer, while the metal housing and 246.89 mm diaphragm diameter support dependable operation. It is a direct fit for 1994-2000 Lexus SC300 and 1994-2000 Lexus SC400 applications listed in the fitment data. This part cross-references Toyota/Lexus OE numbers 4461024090 and 4461024100 for the same application.

What It Is Used For

• Restoring brake pedal assist that has become weak or inconsistent.
• Addressing a hard brake pedal condition caused by booster wear.
• Replacing a leaking vacuum booster that no longer holds pressure.
• Correcting reduced braking response from an aging booster assembly.

Installation Notes and Tips

Verify master cylinder stud thread size, mounting stud layout, and booster depth before installation. Transfer or replace any related components required by the vehicle setup, since the master cylinder is not included. Confirm vacuum supply integrity and inspect the brake system for leaks before returning the vehicle to service.

Quality Assurance

MPA Electrical subjects each unit to 100% end-of-line testing using proprietary equipment to confirm braking assist performance and pressure transfer. Part number B3154 is a remanufactured standard replacement booster built to meet the demands of vacuum brake systems.