MPA Electrical B5145 Power Brake Booster

Remanufactured Brake Booster Overview

This MPA Electrical power brake booster is a remanufactured replacement built for heavy-duty braking systems that need strong assist and consistent pedal response. Part number B5145 is engineered for direct replacement applications on select Chevrolet and GMC trucks and SUVs.

Key Features

• Remanufactured power brake booster with a standard replacement service grade.
• Metal housing for durable brake system support.
• Mounting bracket included for installation alignment.
• 10x1.50 master cylinder stud thread size.
• Designed to deliver maximum braking assist with minimal pedal effort.
• 100% end-of-line tested using proprietary test equipment.

Detailed Product Description

MPA Electrical B5145 is a remanufactured hydraulic power brake booster for heavy-duty brake system service. It is built with new replacement and specially treated components to help maintain vacuum seal integrity, pressure transfer, and braking performance. The metal housing and included mounting bracket support a secure installation, while the 10x1.50 stud thread specification helps match the correct master cylinder connection. This part number B5145 is a fitment-based replacement for 2015-2019 Chevrolet Silverado 2500 HD, Silverado 3500 HD, 2016-2019 Chevrolet Suburban 3500 HD, 2015-2019 GMC Sierra 2500 HD, Sierra 3500 HD, and 2015-2018 Chevrolet Silverado 3500. For buyers searching for a reman hydraulic power brake booster for Chevrolet Silverado 2500 HD or GMC Sierra 3500 HD applications, B5145 provides a direct replacement option with tested output consistency.

What It Is Used For

• Restoring brake assist when pedal effort has increased.
• Replacing a worn or leaking power brake booster.
• Addressing weak vacuum seal performance in the brake assist system.
• Correcting inconsistent pressure transfer to the master cylinder.
• Updating a remanufactured booster on compatible Chevrolet and GMC heavy-duty platforms.

Installation Notes and Tips

Verify master cylinder stud thread size, mounting bracket fitment, and brake system configuration before installation. This booster does not include a master cylinder or brake pedal rod extension. Confirm the vehicle application against the fitment list for Chevrolet Silverado, GMC Sierra, and Chevrolet Suburban 3500 HD models before replacing the original unit.

Quality Assurance

MPA Electrical subjects every unit to 100% end-of-line testing with proprietary equipment to verify performance before release. The remanufactured construction and tested output help support consistent brake assist in demanding service conditions.