MPA Electrical B3108 Power Brake Booster

Vacuum Brake Booster Overview

This remanufactured vacuum power brake booster is built for drivers who need consistent braking assist and a lighter pedal feel. It is a standard replacement unit for Volkswagen brake systems and is identified by part number B3108.

Key Features

• Vacuum booster design for power-assisted braking.
• Remanufactured construction with metal housing.
• Standard replacement service grade.
• 244.6 mm diaphragm diameter for the specified application.
• 8 x 1.25 mm master cylinder stud thread size.
• Master cylinder, gasket, seal, and pedal rod extension are not included.

Detailed Description

MPA Electrical B3108 is a remanufactured power brake booster engineered to restore vacuum-assisted braking performance with minimal pedal effort. The unit uses specially treated replacement components to help maintain vacuum seal integrity and pressure transfer, and it is end-of-line tested to verify function before release. This part cross-references Volkswagen OE numbers 1H1 612 107 C and 1H1612107C for the same application.

Compatible with Volkswagen Cabrio, Golf, and Jetta applications from 1993-1999, this booster is a direct service replacement for vehicles requiring a vacuum brake booster without a master cylinder. It is a practical choice for Volkswagen Golf and Volkswagen Jetta brake repair when the original booster has lost assist or vacuum retention. The B3108 part number should be matched to the vehicle’s brake system specifications before installation.

Common Repair Issues

• Hard brake pedal feel caused by reduced vacuum assist.
• Loss of braking boost from a leaking booster diaphragm or seal.
• Poor pressure transfer between the pedal and master cylinder.
• Brake system performance issues related to a worn remanufactured replacement unit.

Installation Notes and Quality

Verify master cylinder stud thread size, mounting stud layout, and booster-to-master cylinder compatibility before installation. This unit does not include a master cylinder, mounting bracket, gasket, seal, or brake pedal rod extension, so those components must be confirmed separately for the application. Professional installation is recommended to ensure proper brake pedal travel and vacuum operation.

MPA Electrical subjects each unit to 100% end-of-line testing using proprietary equipment to confirm performance and pressure transfer. The remanufactured design and tested output support dependable service in Volkswagen Cabrio, Golf, and Jetta brake applications.

Quality Assurance

Each B3108 brake booster is tested at the end of the production process to confirm braking assist performance and vacuum sealing before it leaves the factory.