MPA Electrical B3554 Power Brake Booster

Vacuum Brake Booster Replacement

This remanufactured vacuum power brake booster is built for Subaru applications that need strong braking assist with low pedal effort. MPA Electrical part B3554 is a standard replacement unit with a metal housing and vacuum booster design for direct brake system service.

Key Features

• Remanufactured standard replacement brake booster
• Vacuum booster design for braking assist
• Metal housing for durable construction
• No master cylinder included
• No brake pedal rod extension, gasket, seal, or mounting bracket included
• 8x1.25 master cylinder stud thread size

Detailed Description

MPA Electrical B3554 is a remanufactured power brake booster engineered to restore vacuum-assisted braking performance. It is tested for vacuum seal integrity and pressure transfer, with end-of-line verification performed on every unit. This part cross-references Subaru OE numbers 26402FG010 and 26402FG060 for the same application. Compatible with Subaru Impreza, Subaru WRX, Subaru WRX STI, and Subaru Forester applications listed in the fitment data, B3554 supports brake system service where the booster is the required replacement component.

What It Helps Solve

• Hard brake pedal feel caused by a worn booster
• Reduced braking assist from vacuum seal loss
• Inconsistent pedal response during braking
• Brake system service when the booster housing is damaged

Installation Notes and Tips

Verify the master cylinder stud thread size before installation and confirm the replacement matches the original booster configuration. This unit does not include a master cylinder, gasket or seal, mounting bracket, or brake pedal rod extension. Fitment includes 2008-2014 Subaru Impreza, 2012-2014 Subaru WRX, 2013-2014 Subaru WRX STI, and 2009-2013 Subaru Forester.

Quality Assurance

MPA Electrical subjects each booster to 100% end-of-line testing using proprietary equipment to confirm performance before release. The remanufactured construction and tested vacuum sealing support consistent brake assist for the listed Subaru applications.