MPA Electrical B1129 Power Brake Booster

Overview

MPA Electrical B1129 is a remanufactured vacuum power brake booster built for standard replacement service. It is engineered to deliver strong braking assist with reduced pedal effort, and it is tested at the end of production to verify performance.

This brake booster is listed for 1994-1997 Cadillac DeVille, Cadillac Eldorado, and Cadillac Seville applications. The B1129 part number is also referenced by interchange numbers 18019187, 18029878, and 18029921 for the same application.

Key Features

• Remanufactured vacuum brake booster for standard replacement service
• Dual-diaphragm design for consistent assist output
• Metal housing for durable construction
• 11.04-inch diaphragm diameter
• 10 x 1.50 mm master cylinder stud thread size
• End-of-line tested for pressure transfer and vacuum seal verification

Product Details

MPA Electrical B1129 is a remanufactured power brake booster designed around vacuum-assisted braking performance. The dual diaphragm layout, metal housing, and treated replacement components are used to support reliable vacuum sealing and pressure transfer. Because the master cylinder is not included, this unit is intended for applications where the existing master cylinder is retained or replaced separately. The B1129 is a fitment-specific brake booster for Cadillac DeVille, Cadillac Eldorado, and Cadillac Seville models from 1994 through 1997.

Common Issues This Part Can Address

• Hard brake pedal feel
• Reduced braking assist
• Vacuum seal loss in the booster assembly
• Inconsistent pedal response during braking
• Booster housing wear or internal diaphragm failure

Installation Notes

Verify master cylinder compatibility before installation, since the master cylinder is not included. Confirm the 10 x 1.50 mm stud thread size and mounting layout against the original unit before assembly. Follow factory service procedures for brake system bleeding and final pedal check after installation.

Quality Assurance

MPA Electrical subjects each unit to 100% end-of-line testing using proprietary equipment to confirm braking assist performance and sealing integrity.