MPA Electrical B1329 Power Brake Booster

Reman Vacuum Brake Booster for GM SUVs and Trucks

MPA Electrical B1329 is a remanufactured vacuum power brake booster built for consistent braking assist and reduced pedal effort. It is a standard replacement for select Cadillac, Chevrolet, and GMC applications, including 2010-2012 Cadillac Escalade and 2010-2012 Chevrolet Tahoe brake booster replacement needs.

The MPA Electrical brake booster line focuses on remanufactured vacuum boosters with new replacement and specially treated components to help maintain vacuum seal integrity, pressure transfer, and braking response. Each unit is 100% end-of-line tested with proprietary equipment before release.

Key Features

• Part number B1329 remanufactured vacuum power brake booster
• Standard replacement brake service grade
• 10.76 in. diaphragm diameter, 273.3 mm
• Metal housing construction
• 2 mounting studs with 10 x 1.50 mm master cylinder stud thread size
• Master cylinder not included
• Brake pedal rod extension not included
• Mounting bracket, gasket/seal, and front seal not included

Detailed Description

MPA Electrical B1329 is a reman vac pwr brake booster w/o master cyl designed for vacuum-assisted braking systems. It is built for direct replacement service on 2010-2012 Cadillac Escalade, Escalade ESV, and Escalade EXT; 2010-2012 Chevrolet Avalanche, Suburban 1500, and Tahoe; 2010-2012 GMC Yukon and Yukon XL 1500; plus 2010-2011 Chevrolet Silverado 1500, Silverado 2500, and GMC Sierra 1500. This part cross-references OE numbers 19417211 and 84164393 for the same application.

Use B1329 when replacing a worn or leaking brake booster on GM full-size SUVs and trucks where vacuum assist, pedal feel, and braking consistency have changed. The remanufactured design and tested components support reliable vacuum sealing and pressure transfer in the brake system.

What It Helps Fix

• Hard brake pedal feel
• Reduced vacuum assist during braking
• Brake pedal effort that has increased over time
• Vacuum leak symptoms at the booster
• Brake response changes caused by a failing booster diaphragm or seal

Installation Notes and Tips

Verify the master cylinder is transferred or replaced separately, since it is not included with this booster. Confirm the 10 x 1.50 mm master cylinder stud thread size and the 2-stud mounting layout before installation. Inspect the vacuum supply, pushrod alignment, and brake pedal linkage during service to ensure proper operation after replacement.

Quality Assurance

MPA Electrical remanufactures this booster with replacement and specially treated components, then subjects each unit to 100% end-of-line testing using proprietary test equipment. That process helps verify vacuum seal performance and braking assist output before the part is released.