MPA Electrical B1707 Power Brake Booster

Vacuum Brake Booster for GM SUVs and Trucks

MPA Electrical B1707 is a remanufactured vacuum power brake booster built for direct replacement in select Cadillac, Chevrolet, and GMC applications. It is engineered to deliver strong braking assist with reduced pedal effort, helping restore consistent brake feel in vehicles such as the Cadillac Escalade, Chevrolet Tahoe, and GMC Yukon.

This reman vac pwr brake booster w/o master cyl is a standard replacement unit with a 10.79-inch diaphragm, metal housing, and a 10 x 1.50 master cylinder stud thread size. The booster is supplied without a master cylinder, brake pedal rod extension, gasket or seal, front seal, or mounting bracket.

Key Features

• Remanufactured vacuum power brake booster
• Standard replacement brake service grade
• 10.79-inch diaphragm diameter for vacuum-assisted braking
• Metal housing for OE-style fit and durability
• 2 mounting studs with 10 x 1.50 master cylinder stud thread size
• Master cylinder not included
• Brake pedal rod extension not included
• Interchanges with 23135220 and 84602473

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 seal integrity and pressure transfer. B1707 is built to restore brake booster function in GM full-size SUVs and pickups, including applications across the Cadillac Escalade and Escalade ESV, Chevrolet Tahoe and Silverado, and GMC Yukon, Yukon XL, Sierra 1500, and Sierra 1500 Limited. This part number, B1707, is a direct-fit style replacement for vehicles that use a vacuum booster without an included master cylinder.

This part cross-references 23135220 and 84602473 for the same application.

Common Problems It Can Help Address

• Hard brake pedal feel
• Reduced brake assist during stopping
• Vacuum seal loss in the booster assembly
• Inconsistent pedal response under braking
• Brake booster failure on GM truck and SUV platforms

Installation Notes and Tips

Verify master cylinder compatibility, stud thread size, and mounting layout before installation. Because this booster does not include a master cylinder, brake pedal rod extension, gasket or seal, front seal, or mounting bracket, reuse or source the required related components as needed for the vehicle. After installation, inspect for vacuum leaks and confirm proper pedal travel and brake assist before returning the vehicle to service.

Quality Assurance

Each MPA Electrical brake booster is subjected to 100% end-of-line testing using proprietary test equipment. The remanufacturing process includes new replacement and specially treated components to support vacuum sealing, pressure transfer, and consistent braking performance.