MPA Electrical B3070 Power Brake Booster

Vacuum Brake Booster for Metro, Swift, Sprint

MPA Electrical B3070 is a remanufactured vacuum power brake booster built for direct replacement in select Geo, Pontiac, Chevrolet, and Suzuki applications. It is engineered to deliver strong braking assist with reduced pedal effort, helping restore consistent pedal feel in vehicles such as the Geo Metro, Suzuki Swift, and Chevrolet Sprint.

The MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl line focuses on replacement boosters that are vacuum-tested and finished with treated components to improve seal integrity and pressure transfer. This B3070 unit is supplied without the master cylinder and uses a metal housing with a 6.6-inch diaphragm diameter and 8 x 1.25 mm master cylinder stud thread size.

Key Features

• Remanufactured vacuum power brake booster
• Standard replacement brake service grade
• Metal housing construction
• 6.6-inch diaphragm diameter
• 2 mounting studs
• Master cylinder not included
• Brake pedal rod extension not included
• Gasket or seal not included
• Front seal not included
• 8 x 1.25 mm master cylinder stud thread size
• 100% end-of-line tested by the manufacturer

Detailed Description

MPA Electrical B3070 is a remanufactured vacuum brake booster designed for vehicles that rely on vacuum assist to reduce pedal effort and improve brake response. It is a direct-fit replacement for select 1989-1994 Geo Metro, 1989-1994 Suzuki Swift, 1989-1991 Chevrolet Sprint, 1989-1991 Pontiac Firefly, and 1992 Chevrolet Metro applications. This part cross-references OE numbers 5130060B20 and 96060621 for the same application.

Built with a metal housing and a 167.64 mm (6.6 in.) diaphragm, this booster is intended to restore vacuum seal performance and pressure transfer in the brake system. The remanufacturing process includes specially treated replacement components and end-of-line testing to verify function before shipment.

What It Helps Fix

• Hard brake pedal feel
• Reduced brake assist from a failing vacuum booster
• Inconsistent pedal response during braking
• Vacuum seal loss in the booster assembly
• Brake assist issues on Geo Metro, Suzuki Swift, Chevrolet Sprint, Pontiac Firefly, and Chevrolet Metro models

Installation Notes and Tips

• Fits 1989-1994 Geo Metro, N/A
• Fits 1989-1994 Suzuki Swift, N/A
• Fits 1989-1991 Chevrolet Sprint, N/A
• Fits 1989-1991 Pontiac Firefly, N/A
• Fits 1992 Chevrolet Metro, N/A
• Transfer or verify the master cylinder separately, since it is not included
• Confirm master cylinder stud thread size is 8 x 1.25 mm before installation
• Inspect vacuum supply, pedal linkage, and mounting points before replacing the booster

Quality Assurance

MPA Electrical remanufactures this brake booster with treated replacement components and verifies each unit through 100% end-of-line testing using proprietary test equipment. That process is used to confirm vacuum assist performance and pressure transfer before the part leaves production.