MPA Electrical B3173 Power Brake Booster

Reliable Power Brake Booster Replacement for Volkswagen Models

The MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl (Part Number B3173) offers a remanufactured vacuum booster solution designed for Volkswagen vehicles. This power brake booster is engineered to restore proper brake assist performance on select Volkswagen Beetle, Bora, GLI, and Jetta models.

• Remanufactured vacuum power brake booster
• Standard replacement brake service grade
• Metal housing for durability
• Diaphragm diameter of 10.58 inches (268.73 mm)
• Includes 2 mounting studs with 8 x 1.25 mm master cylinder stud thread size
• Compatible with Volkswagen Beetle, Bora, GLI, and Jetta

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 brake boosters without the master cylinder included. This line provides a cost-effective option for restoring brake assist functionality while maintaining OEM specifications. The booster features a robust metal housing and a diaphragm designed to meet standard brake service requirements, making it suitable for Volkswagen vehicles requiring a reliable replacement part.

Product Details and Specifications

This power brake booster is a remanufactured unit designed to replace the vacuum booster on compatible Volkswagen models. It does not include the master cylinder, brake pedal rod extension, gaskets, seals, or mounting brackets, so these components must be sourced separately if needed. The booster’s diaphragm measures 10.58 inches (268.73 mm) in diameter, providing the necessary vacuum assist for effective braking. The metal housing ensures structural integrity and long-term durability. The unit mounts using two studs, each with an 8 x 1.25 mm thread size, matching OEM mounting requirements.

Common Applications and Problem Resolution

• Restores brake assist on Volkswagen Beetle, Bora, GLI, and Jetta models
• Replaces faulty or weak vacuum brake boosters causing hard brake pedal
• Addresses vacuum leaks or diaphragm failure within the booster
• Improves brake pedal response and reduces driver effort
• Eliminates brake drag or inconsistent brake feel related to booster issues

Installation Notes and Tips

Installation requires removal of the existing vacuum brake booster and proper alignment with the brake pedal and master cylinder mounting points. Since this unit does not include the master cylinder or mounting hardware, ensure all related components are inspected and replaced as necessary. Verify the mounting stud thread size (8 x 1.25 mm) matches your vehicle’s specifications. It is recommended to check vacuum lines and connections for leaks during installation to maintain optimal booster performance.

Quality Assurance and Warranty Information

The MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl (B3173) is a remanufactured product that meets standard brake service grade requirements. Each unit undergoes thorough inspection and testing to ensure reliable operation. Warranty coverage details should be confirmed with the distributor or retailer, as they may vary. This part is designed to provide dependable brake assist restoration for compatible Volkswagen vehicles.