MPA Electrical B3142 Power Brake Booster

Remanufactured Vacuum Brake Booster

MPA Electrical B3142 is a remanufactured vacuum power brake booster for select Subaru applications. It is built for drivers who need consistent brake assist and a firm, predictable pedal feel in daily driving conditions.

Compatible with 2002-2007 Subaru Impreza, 2001-2004 Subaru Outback, 2002-2003 Subaru Forester, and 2002 Subaru Legacy, this reman vac pwr brake booster w/o master cyl is a direct-fit replacement for the original vacuum booster assembly.

Key Features

• Remanufactured standard replacement brake booster
• Vacuum booster design for power-assisted braking
• Metal housing for durable construction
• 247.14 mm / 9.73 in 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 or seal, and front seal not included

Product Details

MPA Electrical’s Reman Vac Pwr Brake Booster w/o Master Cyl line is engineered and tested to restore vacuum-assisted braking performance with minimal pedal effort. New replacement and specially treated internal components are used to support vacuum sealing, pressure transfer, and overall brake assist consistency. Each unit is 100% end-of-line tested with proprietary equipment before release. Part number B3142 is also referenced for Subaru brake booster replacement applications.

This part cross-references Subaru OE numbers 26402AE32A and 26402FC200 for the same application.

Common Issues This Part Can Address

• Hard brake pedal feel
• Reduced brake assist from a failing vacuum booster
• Inconsistent pedal response during braking
• Vacuum seal loss in the booster assembly
• Brake performance decline caused by worn internal booster components

Installation Notes

Verify master cylinder stud thread size, mounting stud layout, and diaphragm diameter before installation. This booster is supplied without a master cylinder, pedal rod extension, gasket, seal, or mounting bracket, so reuse or source the correct related components as needed. Confirm vehicle-specific fitment for your Subaru Impreza, Outback, Forester, or Legacy before service.

Quality Assurance

MPA Electrical remanufactures this brake booster with replacement and specially treated components, then subjects each unit to 100% end-of-line testing to confirm performance before shipment.