MPA Electrical B1007 Power Brake Booster

Vacuum Brake Booster for GM Compact Trucks

The MPA Electrical B1007 remanufactured vacuum power brake booster is built for drivers who need consistent brake assist and a firm, predictable pedal feel. It is a standard replacement unit with a dual-diaphragm design, metal housing, and a 280.67 mm (11.05 in.) diaphragm diameter for vacuum-assisted braking performance.

Compatible with 1997-2005 Chevrolet Blazer, 1997-2005 GMC Jimmy, 1998-2004 Chevrolet S10, 1998-2004 GMC Sonoma, 1998-2001 Oldsmobile Bravada, and 1998-2000 Isuzu Hombre, this B1007 brake booster is a direct-fit service part for common GM and Isuzu applications.

Key Features

• Remanufactured vacuum power brake booster
• Dual-diaphragm construction for braking assist
• Metal housing for durable service use
• Brake pedal rod extension included
• Master cylinder stud thread size: 10 x 1.50 mm
• Two mounting studs
• Master cylinder not included
• Gasket, seal, front seal, and mounting bracket not included

Product Details

MPA Electrical’s Reman Vac Pwr Brake Booster w/o Master Cyl line focuses on replacement boosters that restore vacuum assist after wear, leakage, or reduced pedal response. The B1007 is engineered and tested to deliver strong braking assist with low pedal effort, while treated replacement components help maintain vacuum sealing and pressure transfer. Each unit is end-of-line tested with proprietary equipment before release.

This part cross-references 18029871 for the same application. Use B1007 when servicing Chevrolet Blazer, GMC Jimmy, Chevrolet S10, GMC Sonoma, Oldsmobile Bravada, or Isuzu Hombre brake systems that require a vacuum booster without a master cylinder.

Common Problems This Part Can Address

• Hard brake pedal feel
• Reduced vacuum brake assist
• Brake booster vacuum leakage
• Inconsistent pedal response during braking
• Wear-related loss of braking assist in GM compact truck applications

Installation Notes

Verify master cylinder stud thread size, mounting stud layout, and pedal rod extension before installation. This booster does not include a master cylinder, so transfer or replace the master cylinder separately as needed. Confirm the vehicle’s brake system condition, vacuum supply, and pedal linkage alignment during service.

Quality Assurance

MPA Electrical remanufactures this booster with new replacement and specially treated components, then tests every unit at the end of the line to confirm performance and sealing integrity. Part number B1007 is built for standard replacement service in the listed applications.