MPA Electrical B3221 Power Brake Booster
Vacuum Brake Booster for Subaru Applications
MPA Electrical B3221 is a remanufactured vacuum power brake booster built for Subaru vehicles that need consistent brake assist and a firm, responsive pedal. It is a standard replacement unit for select Forester, Impreza, Baja, Legacy, and Outback applications.
Designed for vacuum-assisted braking systems, this booster uses a metal housing and a 247.9 mm (9.76 in.) diaphragm diameter to help transfer pedal input into braking force with reduced effort. Part number B3221 is remanufactured and tested as a direct replacement for the listed Subaru fitments.
Key Features
- Remanufactured vacuum power brake booster
- Standard replacement brake service grade
- Metal housing for durable construction
- 247.9 mm / 9.76 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 focuses on remanufactured brake assist components for vehicles that rely on vacuum boost. For Subaru Forester, Impreza, Baja, Legacy, and Outback models in the listed years, B3221 is built to restore brake pedal assist and maintain reliable vacuum sealing and pressure transfer. This part cross-references Subaru OE numbers 26402AE34A and 26402FE230 for the same application.
What It Helps Address
- Hard brake pedal feel
- Reduced brake assist from a failing vacuum booster
- Inconsistent pedal response during braking
- Vacuum seal loss in the brake booster assembly
- Brake performance issues tied to booster wear
Installation Notes
Verify the master cylinder stud thread size, mounting stud layout, and diaphragm diameter before installation. This booster is supplied without a master cylinder, brake pedal rod extension, mounting bracket, gasket, seal, or front seal, so reuse or source the required related components as needed for the vehicle. Confirm the vehicle’s vacuum brake system configuration and match the listed Subaru fitment before installation.
Quality Assurance
Each MPA Electrical brake booster is subjected to 100% end-of-line testing using proprietary test equipment to verify performance before release. The remanufacturing process includes specially treated and replacement components to support vacuum sealing and pressure transfer consistency.
Compatible Vehicles
- Fits 2004-2008 Subaru Forester, N/A
- Fits 2002-2007 Subaru Impreza, N/A
- Fits 2003-2006 Subaru Baja, N/A
- Fits 2003-2004 Subaru Legacy, N/A
- Fits 2004 Subaru Outback, N/A
Original: $200.43
-65%$200.43
$70.15MPA Electrical B3221 Power Brake Booster
Vacuum Brake Booster for Subaru Applications
MPA Electrical B3221 is a remanufactured vacuum power brake booster built for Subaru vehicles that need consistent brake assist and a firm, responsive pedal. It is a standard replacement unit for select Forester, Impreza, Baja, Legacy, and Outback applications.
Designed for vacuum-assisted braking systems, this booster uses a metal housing and a 247.9 mm (9.76 in.) diaphragm diameter to help transfer pedal input into braking force with reduced effort. Part number B3221 is remanufactured and tested as a direct replacement for the listed Subaru fitments.
Key Features
- Remanufactured vacuum power brake booster
- Standard replacement brake service grade
- Metal housing for durable construction
- 247.9 mm / 9.76 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 focuses on remanufactured brake assist components for vehicles that rely on vacuum boost. For Subaru Forester, Impreza, Baja, Legacy, and Outback models in the listed years, B3221 is built to restore brake pedal assist and maintain reliable vacuum sealing and pressure transfer. This part cross-references Subaru OE numbers 26402AE34A and 26402FE230 for the same application.
What It Helps Address
- Hard brake pedal feel
- Reduced brake assist from a failing vacuum booster
- Inconsistent pedal response during braking
- Vacuum seal loss in the brake booster assembly
- Brake performance issues tied to booster wear
Installation Notes
Verify the master cylinder stud thread size, mounting stud layout, and diaphragm diameter before installation. This booster is supplied without a master cylinder, brake pedal rod extension, mounting bracket, gasket, seal, or front seal, so reuse or source the required related components as needed for the vehicle. Confirm the vehicle’s vacuum brake system configuration and match the listed Subaru fitment before installation.
Quality Assurance
Each MPA Electrical brake booster is subjected to 100% end-of-line testing using proprietary test equipment to verify performance before release. The remanufacturing process includes specially treated and replacement components to support vacuum sealing and pressure transfer consistency.
Compatible Vehicles
- Fits 2004-2008 Subaru Forester, N/A
- Fits 2002-2007 Subaru Impreza, N/A
- Fits 2003-2006 Subaru Baja, N/A
- Fits 2003-2004 Subaru Legacy, N/A
- Fits 2004 Subaru Outback, N/A
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Vacuum Brake Booster for Subaru Applications
MPA Electrical B3221 is a remanufactured vacuum power brake booster built for Subaru vehicles that need consistent brake assist and a firm, responsive pedal. It is a standard replacement unit for select Forester, Impreza, Baja, Legacy, and Outback applications.
Designed for vacuum-assisted braking systems, this booster uses a metal housing and a 247.9 mm (9.76 in.) diaphragm diameter to help transfer pedal input into braking force with reduced effort. Part number B3221 is remanufactured and tested as a direct replacement for the listed Subaru fitments.
Key Features
- Remanufactured vacuum power brake booster
- Standard replacement brake service grade
- Metal housing for durable construction
- 247.9 mm / 9.76 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 focuses on remanufactured brake assist components for vehicles that rely on vacuum boost. For Subaru Forester, Impreza, Baja, Legacy, and Outback models in the listed years, B3221 is built to restore brake pedal assist and maintain reliable vacuum sealing and pressure transfer. This part cross-references Subaru OE numbers 26402AE34A and 26402FE230 for the same application.
What It Helps Address
- Hard brake pedal feel
- Reduced brake assist from a failing vacuum booster
- Inconsistent pedal response during braking
- Vacuum seal loss in the brake booster assembly
- Brake performance issues tied to booster wear
Installation Notes
Verify the master cylinder stud thread size, mounting stud layout, and diaphragm diameter before installation. This booster is supplied without a master cylinder, brake pedal rod extension, mounting bracket, gasket, seal, or front seal, so reuse or source the required related components as needed for the vehicle. Confirm the vehicle’s vacuum brake system configuration and match the listed Subaru fitment before installation.
Quality Assurance
Each MPA Electrical brake booster is subjected to 100% end-of-line testing using proprietary test equipment to verify performance before release. The remanufacturing process includes specially treated and replacement components to support vacuum sealing and pressure transfer consistency.
Compatible Vehicles
- Fits 2004-2008 Subaru Forester, N/A
- Fits 2002-2007 Subaru Impreza, N/A
- Fits 2003-2006 Subaru Baja, N/A
- Fits 2003-2004 Subaru Legacy, N/A
- Fits 2004 Subaru Outback, N/A
