MPA Electrical B1140 Power Brake Booster

Reliable Power Brake Booster Replacement for Chevrolet Suburban

The MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl (Part Number B1140) is designed as a standard replacement for your Chevrolet C20 Suburban and K20 Suburban. This remanufactured vacuum power brake booster restores proper brake assist performance without including the master cylinder.

Key Features of MPA Electrical B1140 Power Brake Booster

• Remanufactured condition ensuring reliable function
• Vacuum booster type for effective brake assist
• Metal housing for durability and strength
• Diaphragm diameter of 11.02 inches (279.91 mm) for consistent performance
• Includes 2 mounting studs with 3/8-16 master cylinder stud thread size
• Standard replacement grade suitable for brake service
• Compatible with Chevrolet C20 Suburban and K20 Suburban models

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 from MPA Electrical focuses on remanufactured vacuum power brake boosters that do not include the master cylinder. This line provides a cost-effective solution for restoring brake assist functionality while allowing customers to retain their existing master cylinder. The B1140 part is a precise fit for select Chevrolet Suburban models, maintaining OEM specifications for diaphragm size and mounting configuration.

Detailed Product Description

This power brake booster is engineered with a metal housing to withstand the rigors of daily driving and braking demands. The vacuum booster design uses engine vacuum to amplify the force applied to the brake pedal, reducing driver effort and improving braking response. With a diaphragm diameter of 11.02 inches (279.91 mm), the booster delivers consistent brake assist performance. The unit includes two mounting studs and a 3/8-16 master cylinder stud thread size, matching the original equipment specifications for Chevrolet C20 and K20 Suburban models. Note that this booster does not include the master cylinder, brake pedal rod extension, gaskets, seals, or mounting brackets.

Common Applications and Issues Addressed

• Restores brake assist in Chevrolet C20 Suburban and K20 Suburban vehicles
• Replaces faulty or weak vacuum brake boosters causing hard brake pedal
• Eliminates brake pedal travel issues due to booster diaphragm failure
• Addresses vacuum leaks that reduce braking efficiency
• Suitable for standard brake service replacement needs

Installation Notes and Tips

Ensure the vehicle is properly supported and the brake system is depressurized before beginning installation. This booster requires mounting to the firewall with two studs and connection to the master cylinder using the 3/8-16 stud thread size. Since the master cylinder is not included, verify the condition of the existing master cylinder and replace if necessary. Check all vacuum lines for leaks and proper connection to the booster. Bleed the brake system after installation to remove any air and restore proper brake function.

Quality Assurance and Warranty

The MPA Electrical B1140 power brake booster is remanufactured to meet standard brake service grade requirements. Each unit undergoes inspection and testing to ensure functional integrity and durability. While specific warranty details are not provided, remanufactured parts typically come with limited warranties covering defects in workmanship and materials. Consult the product documentation or supplier for exact warranty terms.