MPA Electrical B1038 Power Brake Booster

Remanufactured Vacuum Brake Booster

Restore braking assist on compatible Dodge trucks with this remanufactured vacuum power brake booster from MPA Electrical. Built for direct replacement service, MPA B1038 is engineered to deliver strong vacuum assist with reduced pedal effort for everyday stopping performance.

The MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl line focuses on replacement-ready fitment and tested operation. This unit is a vacuum booster with a dual diaphragm design, metal housing, and no master cylinder included, making it a focused solution for brake booster replacement on select Dodge D250, D350, W250, and W350 applications.

Key Features

• Brand: MPA Electrical
• Part Number: B1038
• Remanufactured standard replacement brake booster
• Vacuum booster design with dual diaphragm construction
• Metal housing for durable service use
• No master cylinder included
• No brake pedal rod extension, gasket or seal, front seal, or mounting bracket included
• Master cylinder stud thread size: 3/8-16
• Two mounting studs
• 100% end-of-line tested using proprietary equipment

Product Details

MPA Electrical B1038 is a remanufactured vacuum power brake booster designed to restore braking assist in vehicles that rely on vacuum-assisted pedal operation. The dual diaphragm layout supports consistent pressure transfer, while specially treated replacement components are used to help maintain vacuum sealing and dependable performance. This part cross-references 4294154 and 5252175 for the same application.

Compatible With 1986-1993 Dodge D250, N/A; 1984-1993 Dodge D350, N/A; 1984-1993 Dodge W250, N/A; and 1984-1993 Dodge W350, N/A. Fits 1986-1993 Dodge D250, N/A. Fits 1984-1993 Dodge D350, N/A. Fits 1984-1993 Dodge W250, N/A. Fits 1984-1993 Dodge W350, N/A.

Common Issues This Part Can Address

• Hard brake pedal feel from a weak or failing booster
• Reduced braking assist during normal pedal application
• Vacuum loss affecting brake booster operation
• Brake response changes caused by worn internal booster components
• Replacement needs after booster housing or diaphragm wear

Installation Notes and Tips

Verify master cylinder compatibility before installation, since the master cylinder is not included. Confirm the vehicle uses the correct vacuum booster configuration, mounting stud layout, and 3/8-16 stud thread size before beginning service. Inspect the vacuum supply line, check valve, and related brake components during replacement to help ensure proper system operation.

Quality Assurance

Each MPA Electrical brake booster is subjected to 100% end-of-line testing with proprietary test equipment to confirm function before release. The remanufacturing process uses new replacement and specially treated components to support vacuum sealing, pressure transfer, and consistent braking assist.