MPA Electrical B1028 Power Brake Booster

Remanufactured Vacuum Brake Booster

Restore firm, consistent brake assist with this remanufactured vacuum power brake booster from MPA Electrical. Built for 2005-2006 Chevrolet Silverado 1500 and GMC Sierra 1500, plus 2007 Silverado 1500 Classic and Sierra 1500 Classic applications, part number B1028 is a standard replacement for vehicles that need reliable pedal assist and vacuum sealing.

MPA Electrical’s Reman Vac Pwr Brake Booster w/o Master Cyl line focuses on replacement boosters that are remanufactured, tested, and prepared for direct brake-system service. This B1028 unit is a vacuum booster with a dual diaphragm design and a metal housing, made for applications that require strong braking assist without the master cylinder included.

• Remanufactured standard replacement power brake booster
• Vacuum booster design with dual diaphragm construction
• 11.49 in. diaphragm diameter for brake assist performance
• Metal housing for brake system durability
• Master cylinder not included
• 10 x 1.50 mm master cylinder stud thread size
• 2 mounting studs
• Brake pedal rod extension not included

Detailed Product Overview

MPA Electrical B1028 is engineered for vacuum-assisted braking systems that need dependable pressure transfer and low pedal effort. The remanufactured construction uses specially treated components to help maintain vacuum seal integrity and consistent operation, while end-of-line testing verifies each unit before release. For Silverado 1500 and Sierra 1500 owners, this brake booster supports direct replacement service when the original booster shows signs of wear or loss of assist.

This part cross-references OE numbers 10367085 and 15115646 for the same application. It is a practical choice for 2005-2006 Chevrolet Silverado 1500, 2005-2006 GMC Sierra 1500, 2007 Chevrolet Silverado 1500 Classic, and 2007 GMC Sierra 1500 Classic brake repair work.

Common Problems This Part Can Address

• Hard brake pedal feel
• Reduced vacuum brake assist
• Longer stopping response from a worn booster
• Vacuum seal loss in the brake booster assembly
• Brake assist inconsistency during normal driving

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, 2-stud mounting layout, and vacuum booster configuration match the original equipment on your Silverado 1500 or Sierra 1500 application. Inspect the brake pedal rod connection, vacuum supply, and sealing surfaces during replacement to help ensure proper brake assist after installation.

Quality Assurance

Each MPA Electrical brake booster is subjected to 100% end-of-line testing using proprietary test equipment. The remanufacturing process includes new replacement and specially treated components to support maximum vacuum seal, reliable pressure transfer, and consistent braking performance.