MPA Electrical B1065 Power Brake Booster

Remanufactured Vacuum Brake Booster for S10 and S15

MPA Electrical B1065 is a remanufactured vacuum power brake booster built for consistent brake assist and a firm, responsive pedal feel. It is a standard replacement vacuum booster with a dual diaphragm design, metal housing, and no master cylinder included.

Compatible with 1982-1987 Chevrolet S10, 1983-1987 Chevrolet S10 Blazer, 1982-1987 GMC S15, and 1983-1987 GMC S15 Jimmy, this booster is a direct-fit service part for common brake assist replacement needs on these trucks and SUVs. The B1065 part number is also referenced for interchange applications 18008521 and 18010041.

Key Features

• Remanufactured vacuum power brake booster
• Dual diaphragm construction for brake assist performance
• Metal housing for durable service use
• Standard replacement brake service grade
• Master cylinder not included
• Brake pedal rod extension not included
• Mounting bracket, gasket or seal, and front seal not included
• Master cylinder stud thread size: 10 x 1.5 mm
• Two mounting studs

Product Details

MPA Electrical’s Reman Vac Pwr Brake Booster w/o Master Cyl line focuses on remanufactured brake assist components that are tested for vacuum sealing and pressure transfer. For B1065, that means a vacuum booster engineered to restore braking assist while keeping pedal effort controlled. The 9.05-inch dual diaphragm design is suited to the original brake system layout on the listed Chevrolet and GMC applications, including the S10, S10 Blazer, S15, and S15 Jimmy.

This part number, B1065, is a practical replacement when the original booster has lost vacuum integrity, developed internal leakage, or no longer delivers consistent assist. It is built for vehicles that require a vacuum-operated brake booster without a master cylinder assembly.

Common Brake Issues It Can Address

• Hard brake pedal feel
• Reduced brake assist during stops
• Vacuum leakage in the booster assembly
• Inconsistent pedal response
• Brake system performance loss from a worn booster

Installation Notes and Tips

Verify the master cylinder stud thread size, mounting stud layout, and booster depth before installation. Because the master cylinder is not included, transfer or replace related brake components as needed during service. Confirm vacuum hose condition and inspect the brake pedal linkage and firewall mounting points before final assembly. Fitment includes 1982-1987 Chevrolet S10, 1983-1987 Chevrolet S10 Blazer, 1982-1987 GMC S15, and 1983-1987 GMC S15 Jimmy.

Quality Assurance

MPA Electrical states that these brake boosters are remanufactured with new replacement and specially treated components, then 100% end-of-line tested using proprietary equipment to verify vacuum seal and pressure transfer performance.