MPA Electrical B1049 Power Brake Booster

Reman Vacuum Brake Booster for GM Full-Size Cars

MPA Electrical B1049 is a remanufactured vacuum power brake booster built for direct replacement in select Buick, Cadillac, Oldsmobile, and Pontiac applications. It is engineered for strong braking assist with low pedal effort, using a dual-diaphragm vacuum design and metal housing for consistent pressure transfer.

The MPA Electrical brake booster line focuses on remanufactured replacement units with treated internal components and end-of-line testing. For buyers searching for a reman vac pwr brake booster w/o master cyl, B1049 is a fitment-specific option for several GM platforms, including Buick LeSabre, Buick Park Avenue, Cadillac DeVille, Cadillac Seville, Pontiac Bonneville, and related models.

Key Features

• Part number B1049
• Vacuum booster design with dual diaphragm construction
• Standard replacement brake service grade
• Remanufactured unit with metal housing
• 11.02 in. diaphragm diameter (279.91 mm)
• Master cylinder not included
• Brake pedal rod extension not included
• Mounting bracket not included
• 10 x 1.5 mm master cylinder stud thread size
• 2 mounting studs

Detailed Description

MPA Electrical B1049 is a reman vacuum power brake booster designed for vehicles that rely on vacuum assist to reduce pedal effort and improve brake response. The dual diaphragm layout helps deliver consistent assist, while the remanufactured construction and treated components are used to maintain vacuum sealing and pressure transfer performance. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Compatible With 2000-2005 Buick LeSabre, 1997-2005 Buick Park Avenue, 1997-1999 Buick Riviera, 2006-2008 Buick Lucerne, 2000-2005 Cadillac DeVille, 1998-2004 Cadillac Seville, 2006-2008 Cadillac DTS, 2001-2003 Oldsmobile Aurora, 1997-1999 Oldsmobile Aurora, and 2000-2005 Pontiac Bonneville. Search terms such as reman vacuum brake booster for Buick LeSabre, Cadillac DeVille brake booster replacement, and Pontiac Bonneville vacuum booster replacement all point to this application-specific part.

What It Helps Address

• Hard brake pedal feel caused by a weak booster
• Reduced brake assist during normal stopping
• Vacuum seal loss in the booster assembly
• Inconsistent pedal response on GM full-size cars
• Replacement needs after booster wear or internal diaphragm failure

Installation Notes and Tips

Verify master cylinder stud thread size, mounting stud layout, and booster depth before installation. This unit does not include the master cylinder, gasket or seal, front seal, mounting bracket, or brake pedal rod extension, so reuse or source the required related components as needed for the vehicle. Confirm fitment against the vehicle’s brake system configuration before removal of the original booster.

Quality Assurance

MPA Electrical states that each booster is tested at the end of production using proprietary equipment. The remanufactured design uses new replacement and specially treated components to support vacuum sealing, pressure transfer, and overall braking performance.