MPA Electrical B1237 Power Brake Booster

Reliable Power Brake Booster for Chevrolet Vehicles

The MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl (Part Number B1237) is designed as a standard replacement for select Chevrolet models. This remanufactured vacuum power brake booster provides consistent braking assistance for Chevrolet Bel Air, Caprice, and Impala vehicles.

• Remanufactured vacuum power brake booster
• Compatible with Chevrolet Bel Air, Caprice, and Impala
• Standard replacement brake service grade
• Metal housing for durability
• Diaphragm diameter of 10.65 inches (270.51 mm)
• Includes 2 mounting studs with 10 x 1.5 mm master cylinder stud thread size
• Does not include master cylinder, brake pedal rod extension, gaskets, or mounting brackets

Product Line Details: Reman Vac Pwr Brake Booster w/o Master Cyl

This product is part of the MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl line, which focuses on remanufactured vacuum power brake boosters without the master cylinder included. This line is intended for customers seeking a reliable replacement booster unit compatible with original equipment specifications, particularly for classic Chevrolet models. The absence of the master cylinder allows for flexibility in pairing with existing or separately sourced master cylinders.

Technical Description and Specifications

The B1237 power brake booster features a metal housing designed for strength and longevity. It operates as a vacuum booster, utilizing engine vacuum to assist in brake pedal effort reduction. The diaphragm diameter measures 10.65 inches (270.51 mm), providing adequate surface area for effective brake assistance. The unit includes two mounting studs with a master cylinder stud thread size of 10 x 1.5 mm, ensuring proper fitment with compatible master cylinders. This booster does not come with a brake pedal rod extension, gaskets, seals, or mounting brackets, so these components must be sourced separately if needed.

Common Applications and Problem Resolution

• Restores proper brake pedal feel and responsiveness in Chevrolet Bel Air, Caprice, and Impala models
• Addresses issues with hard brake pedal or increased pedal effort
• Replaces faulty or leaking vacuum brake boosters
• Eliminates inconsistent braking performance due to booster failure
• Suitable for standard brake service grade replacement needs

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 hardware, ensure compatibility with your vehicle’s existing components. Verify the master cylinder stud thread size (10 x 1.5 mm) matches your setup. It is recommended to inspect and replace any worn gaskets or seals during installation to prevent vacuum leaks. Professional installation is advised to maintain proper brake system function and safety.

Quality Assurance and Warranty

This remanufactured power brake booster undergoes thorough inspection and testing to meet standard brake service grade requirements. The metal housing and diaphragm are rebuilt to restore original performance specifications. Warranty coverage details should be confirmed with the distributor or manufacturer, as they may vary. Using a remanufactured part like the MPA Electrical B1237 ensures a cost-effective solution while maintaining reliable braking assistance for your Chevrolet Bel Air, Caprice, or Impala.