MPA Electrical B1050 Power Brake Booster

Vacuum Brake Booster for Jeep Applications

The MPA Electrical B1050 is a remanufactured vacuum power brake booster built for Jeep Cherokee, Comanche, and Wagoneer applications. It is a standard replacement part for drivers replacing a worn booster that can affect pedal feel and braking assist.

MPA Electrical’s Reman Vac Pwr Brake Booster w/o Master Cyl line focuses on restored vacuum sealing and consistent pressure transfer. This B1050 unit is remanufactured, uses a single diaphragm design, and is tested at the end of production to verify performance before release.

Key Features

• Part number B1050
• Remanufactured vacuum power brake booster
• Standard replacement brake service grade
• Single diaphragm design
• Metal housing construction
• Master cylinder not included
• Brake pedal rod extension not included
• Mounting bracket not included
• 2 mounting studs
• Master cylinder stud thread size: 3/8-16
• Diaphragm diameter: 8.72 in. (221.49 mm)

Detailed Description

MPA Electrical B1050 is a remanufactured vacuum brake booster engineered for direct replacement in select Jeep Cherokee, Jeep Comanche, and Jeep Wagoneer models. It is built to restore braking assist by using vacuum pressure to reduce pedal effort, which is important when the original booster shows signs of leakage, reduced assist, or inconsistent pedal response. The B1050 is a practical choice for Jeep Cherokee and Jeep Wagoneer brake repair work where the booster is being replaced without the master cylinder.

This brake booster uses specially treated replacement components to support vacuum sealing and pressure transfer. The unit is finished with 100% end-of-line testing using proprietary equipment, helping verify function before installation. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Compatible With

• Fits 1985-1990 Jeep Cherokee, N/A
• Fits 1986-1990 Jeep Comanche, N/A
• Fits 1988-1990 Jeep Wagoneer, N/A
• Fits 1985 Jeep Wagoneer, N/A

What It Helps Fix

• Hard brake pedal feel
• Reduced vacuum-assisted braking
• Brake booster vacuum leakage
• Inconsistent pedal response during braking
• Booster wear on older Jeep brake systems

Installation Notes

Verify master cylinder stud thread size, mounting stud layout, and diaphragm diameter before installation. This B1050 does not include the master cylinder, gasket or seal, front seal, mounting bracket, or brake pedal rod extension, so reuse or source those components as needed for the vehicle. Confirm fitment against the vehicle’s brake system configuration before final assembly.

Quality Assurance

MPA Electrical remanufactures this booster with replacement and specially treated components, then subjects each unit to end-of-line testing to confirm performance and vacuum integrity. The result is a tested replacement brake booster for Jeep brake service work.