MPA Electrical B1105 Power Brake Booster

Remanufactured Vacuum Brake Booster

MPA Electrical B1105 is a remanufactured vacuum power brake booster for select Jeep applications. It is built for drivers who need consistent brake assist with low pedal effort, using a single-diaphragm design and a metal housing for standard replacement service.

This reman vac pwr brake booster w/o master cyl is compatible with 1984-1987 Jeep Cherokee, 1986-1987 Jeep Comanche, and 1984-1987 Jeep Wagoneer. The B1105 is engineered for direct brake booster replacement where the master cylinder is reused separately.

Key Features

• Brand: MPA Electrical
• Part number: B1105
• Remanufactured vacuum booster
• Standard replacement brake service grade
• Single-diaphragm construction
• Metal housing
• 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: 8.69 in. (220.73 mm)

Product Details

MPA Electrical reman brake boosters are rebuilt with new replacement and specially treated components to help maintain vacuum seal integrity, pressure transfer, and braking response. Each unit is end-of-line tested with proprietary equipment before release. The B1105 is a vacuum booster designed for Jeep Cherokee, Jeep Comanche, and Jeep Wagoneer brake system service where a remanufactured booster is needed without the master cylinder.

This part cross-references Monroe Shocks & Struts (e.g., 83501196) for the same application.

What It Helps Address

• Hard brake pedal feel
• Reduced brake assist from a failing vacuum booster
• Brake pedal effort that has increased over time
• Loss of vacuum seal performance in the booster assembly
• Brake response issues tied to worn internal booster components

Installation Notes

Verify vehicle fitment before installation on 1984-1987 Jeep Cherokee, 1986-1987 Jeep Comanche, or 1984-1987 Jeep Wagoneer. This unit does not include the master cylinder, gasket or seal, front seal, mounting bracket, or brake pedal rod extension. Confirm the existing master cylinder and mounting points match the 3/8-16 stud thread size and 2-stud layout before assembly.

Quality Assurance

MPA Electrical remanufactures this booster with replacement and treated components, then tests each unit at the end of the line using proprietary equipment to verify performance before it leaves production.