MPA Electrical B1425 Power Brake Booster

Reman Vacuum Brake Booster for Buick

Restore braking assist on classic Buick applications with this remanufactured vacuum power brake booster from MPA Electrical. Built for 1967-1970 Buick LeSabre and Buick Riviera models, Part Number B1425 is a standard replacement unit engineered for consistent vacuum seal and smooth pressure transfer.

MPA Electrical’s Reman Vac Pwr Brake Booster w/o Master Cyl line focuses on dependable brake assist performance for vehicles that need a direct-service replacement booster without the master cylinder included.

Key Features

• Remanufactured vacuum power brake booster
• Standard replacement brake service grade
• Metal housing construction
• 10.73 in. diaphragm diameter
• 2 mounting studs
• Master cylinder not included
• Brake pedal rod extension not included
• Gasket, seal, front seal, and mounting bracket not included
• Master cylinder stud thread size: 3/8-16

Detailed Description

MPA Electrical B1425 is a remanufactured vacuum brake booster designed for Buick LeSabre and Buick Riviera models from 1967 through 1970. It is built to restore brake pedal assist by using engine vacuum to reduce pedal effort and improve braking response. The metal housing and 10.73-inch diaphragm diameter support stable operation in a standard replacement application.

This part number, B1425, is intended for buyers searching for a reman vacuum power brake booster for 1967-1970 Buick LeSabre or 1967-1970 Buick Riviera, especially when replacing a worn booster without replacing the master cylinder. It cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• Hard brake pedal feel caused by a weak booster
• Reduced vacuum assist during braking
• Inconsistent pedal response
• Brake assist loss from internal seal wear
• Replacement needs on classic Buick LeSabre and Riviera brake systems

Installation Notes and Tips

Verify master cylinder compatibility before installation, since the master cylinder is not included. Confirm the 3/8-16 master cylinder stud thread size, mounting stud layout, and pedal rod setup against the original unit before removal. Because this booster is remanufactured and does not include a gasket, seal, or mounting bracket, reuse or source the correct related components as needed for the vehicle.

Quality Assurance

MPA Electrical reman brake boosters are tested at the end of the production process using proprietary equipment to confirm braking assist performance and vacuum sealing. The remanufacturing process uses new replacement and specially treated components to support reliable pressure transfer and consistent operation.