MPA Electrical B1235 Power Brake Booster

Reman Vacuum Power Brake Booster

MPA Electrical B1235 is a remanufactured vacuum power brake booster for select Chevrolet and GMC trucks and SUVs. It is built for standard replacement service and is engineered to deliver strong braking assist with reduced pedal effort.

This reman Vac Pwr Brake Booster w/o Master Cyl is a direct-fit option for 1988-1993 Chevrolet S10 and S10 Blazer, plus 1988-1991 GMC S15, S15 Jimmy, and 1991-1993 GMC Sonoma and Jimmy applications. The B1235 uses a metal housing, a vacuum booster design, and a 235.46 mm (9.27 in.) diaphragm diameter for the listed vehicles.

Key Features

• Remanufactured vacuum power brake booster
• Standard replacement brake service grade
• Metal housing construction
• 235.46 mm / 9.27 in. diaphragm diameter
• 2 mounting studs with 10 x 1.50 mm master cylinder stud thread size
• Master cylinder not included
• Brake pedal rod extension not included
• Gasket or seal not included
• Mounting bracket not included
• Front seal not included

Product Details

MPA Electrical’s Reman Vac Pwr Brake Booster w/o Master Cyl line focuses on replacement brake assist components that are remanufactured, inspected, and tested for consistent vacuum sealing and pressure transfer. Part number B1235 is built for drivers replacing a worn booster on Chevrolet S10, Chevrolet S10 Blazer, GMC S15, GMC S15 Jimmy, GMC Sonoma, and GMC Jimmy models listed below. This part cross-references 18014955 for the same application.

What It Helps Fix

• Hard brake pedal feel caused by a weak or leaking booster
• Reduced brake assist during normal stopping
• Vacuum loss at the booster housing
• Inconsistent pedal response under braking
• Replacement needs after booster wear or internal diaphragm issues

Installation Notes

Verify 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 mounting points before final assembly. B1235 is listed for these applications: Fits 1988-1993 Chevrolet S10, N/A; Fits 1988-1993 Chevrolet S10 Blazer, N/A; Fits 1992-1993 GMC Jimmy, N/A; Fits 1991-1993 GMC Sonoma, N/A; Fits 1988-1991 GMC S15 Jimmy, N/A; Fits 1988-1990 GMC S15, N/A.

Quality Assurance

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