MPA Electrical B1738 Power Brake Booster

Overview

MPA Electrical B1738 is a remanufactured vacuum power brake booster for Ram ProMaster vans. It is built for direct brake assist replacement and is supplied without the master cylinder.

This booster is a fitment-based replacement for Ram ProMaster 1500, 2500, and 3500 applications. The B1738 part number is used for vehicles that need restored vacuum-assisted braking performance with standard replacement construction.

Key Features

• Remanufactured power brake booster with standard replacement service grade.
• Metal housing for durable booster construction.
• Master cylinder not included.
• 10x1.50 master cylinder stud thread size.
• Four mounting studs for application-specific installation.
• 100% end-of-line tested using proprietary equipment.

Detailed Description

MPA Electrical B1738 is engineered to deliver strong braking assist with reduced pedal effort. New replacement and specially treated internal components are used to support vacuum sealing, pressure transfer, and consistent brake response. For Ram ProMaster 1500, Ram ProMaster 2500, and Ram ProMaster 3500 models, this remanufactured booster provides a direct service replacement where the original vacuum brake booster has worn, leaked, or lost assist. The B1738 part number also cross-references 68312265AA for the same application.

What It Helps Fix

• Hard brake pedal feel caused by weak vacuum assist.
• Reduced braking response from a leaking booster diaphragm or seal.
• Inconsistent pedal effort during normal stopping.
• Brake assist loss related to booster wear or internal contamination.
• Replacement needs when the original booster housing or internal components are no longer serviceable.

Installation Notes

Verify master cylinder compatibility before installation, since this booster is supplied without the master cylinder. Confirm the 10x1.50 stud thread size and four-stud mounting pattern against the vehicle’s original brake booster setup before assembly. Fitment includes Ram ProMaster 1500, 2500, and 3500 applications from 2017-2027; use the vehicle-specific notes to confirm the correct brake booster configuration.

Quality Assurance

MPA Electrical subjects each unit to 100% end-of-line testing with proprietary test equipment. The remanufactured design uses new replacement and specially treated components to support vacuum seal integrity and reliable pressure transfer.