MPA Electrical B5020 Power Brake Booster

Hydraulic Brake Booster for GM HD Trucks

MPA Electrical B5020 is a remanufactured hydraulic power brake booster built for 1988-1991 Chevrolet and GMC C/K 2500 and 3500 trucks. It is engineered for strong braking assist with reduced pedal effort, making it a direct replacement choice for heavy-duty brake service.

The MPA Electrical brake booster line focuses on restored vacuum sealing, dependable pressure transfer, and consistent end-of-line testing. This B5020 reman hydraulic power brake booster is supplied without a master cylinder and is built with a metal housing for standard replacement service.

Key Features

• Remanufactured hydraulic power brake booster
• Standard replacement brake service grade
• Metal housing construction
• Master cylinder not included
• Brake pedal rod extension not included
• Gasket or seal not included
• Mounting bracket not included
• Master cylinder stud thread size: 10 x 1.5 mm
• 2 mounting studs
• 100% end-of-line tested by MPA Electrical

Detailed Description

MPA Electrical B5020 is a reman hyd pwr brake booster w/o master cyl designed for Chevrolet C2500, Chevrolet C3500, Chevrolet K2500, Chevrolet K3500, GMC C2500, GMC C3500, GMC K2500, and GMC K3500 applications from 1988-1991. It is a hydraulic power brake booster replacement for trucks that need restored brake assist and predictable pedal response. The remanufactured design uses specially treated components to support sealing and pressure transfer, while proprietary testing verifies each unit before release. If you are replacing a worn booster on a Chevrolet C2500 or GMC K3500, B5020 provides the correct service-style replacement format for these GM heavy-duty platforms.

This part cross-references OE number 14055057 for the same application.

What It Helps Address

• Hard brake pedal feel
• Reduced brake assist
• Loss of hydraulic pressure transfer
• Brake booster wear from age and mileage
• Inconsistent braking response on GM C/K trucks

Installation Notes and Tips

Verify master cylinder stud thread size, mounting stud layout, and hydraulic brake booster configuration before installation. Because the master cylinder is not included, transfer or replace the master cylinder separately as needed and confirm all sealing surfaces are clean before assembly. This B5020 is listed for 1988-1991 Chevrolet and GMC C/K 2500 and 3500 trucks only, so match the vehicle application carefully before ordering.

Quality Assurance

MPA Electrical subjects each booster to 100% end-of-line testing using proprietary equipment to confirm performance before shipment. The remanufactured construction and treated internal components are used to support reliable vacuum sealing and pressure transfer in service.