MPA Electrical B1055 Power Brake Booster

Reliable Power Brake Booster for Chevrolet S10 and GMC Sonoma

The MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl (Part Number B1055) is designed to restore proper brake assist in your Chevrolet S10 or GMC Sonoma. This remanufactured vacuum power brake booster offers a standard replacement solution for vehicles requiring dependable braking performance.

Key Features of MPA Electrical B1055 Power Brake Booster

• Vacuum booster type for efficient brake assist
• Dual diaphragm design with a 10.67-inch (271.02 mm) diameter for consistent performance
• Durable metal housing construction
• Standard replacement grade suitable for brake service
• Includes 2 mounting studs with 10 x 1.5 mm master cylinder stud thread size
• Remanufactured product condition ensuring quality and reliability

About the Reman Vac Pwr Brake Booster w/o Master Cyl Product Line

The Reman Vac Pwr Brake Booster w/o Master Cyl product line by MPA Electrical focuses on remanufactured vacuum power brake boosters without the master cylinder included. This line provides a cost-effective option for restoring brake booster function while maintaining OEM specifications. The B1055 model fits specific Chevrolet and GMC trucks, offering a direct replacement for worn or failing boosters.

Detailed Product Description

This power brake booster is engineered with a dual diaphragm system measuring 10.67 inches in diameter, providing balanced vacuum assistance to the brake pedal. The metal housing ensures durability under typical operating conditions. Designed without the master cylinder or additional seals and gaskets, this booster is intended for use with existing master cylinders and hardware. The booster includes two mounting studs with a 10 x 1.5 mm thread size, compatible with the brake pedal rod assembly of the Chevrolet S10 and GMC Sonoma models.

Common Brake Issues Addressed by This Booster

• Reduced brake pedal responsiveness or increased pedal effort
• Hissing sounds indicating vacuum leaks in the booster
• Brake pedal sinking or inconsistent brake assist
• Failure of the original booster diaphragm or housing wear
• Brake system performance degradation in Chevrolet S10 or GMC Sonoma trucks

Installation Notes and Tips

Installation requires removal of the existing power brake booster and careful alignment of the mounting studs. Since this unit does not include a master cylinder or mounting bracket, ensure compatibility with your current brake system components. Verify the master cylinder stud thread size (10 x 1.5 mm) matches your vehicle’s specifications. It is recommended to inspect all related brake hardware and vacuum lines during installation for optimal performance.

Quality Assurance and Warranty

The MPA Electrical B1055 power brake booster is remanufactured to meet standard replacement grade requirements. This ensures the product has been tested and restored to functional condition. While specific warranty details are not provided, remanufactured parts typically come with limited warranties covering defects in workmanship and materials. Always confirm warranty terms with the supplier before installation.