MPA Electrical B3324 Power Brake Booster

Overview

This remanufactured vacuum power brake booster is built for vehicles that need consistent braking assist and a firm pedal feel. MPA Electrical B3324 is a standard replacement unit for Audi and Volkswagen applications, with fitment that includes Audi A4, Audi A4 Quattro, Audi A6, Audi A6 Quattro, Audi S6, and Volkswagen Passat.

Key Features

• Vacuum booster design for braking assist with reduced pedal effort.
• Remanufactured metal housing for standard replacement service.
• 18 x 1.50 master cylinder stud thread size.
• Brake pedal rod extension, master cylinder, gasket, seal, and mounting bracket are not included.
• 100% end-of-line tested using proprietary equipment.

Detailed Description

MPA Electrical B3324 is a remanufactured power brake booster engineered to restore vacuum-assisted braking performance. The unit uses specially treated replacement components to support maximum vacuum sealing and reliable pressure transfer, while the metal housing and standard replacement construction suit direct service applications. This part number, B3324, is listed for multiple Audi and Volkswagen platforms, including Audi A4 and Audi A4 Quattro models from 2003-2009, Audi A6 and Audi A6 Quattro models from 2002-2004, Audi S6 models from 2002-2004 and 2007, and Volkswagen Passat models from 2003-2005.

This part cross-references 3B0612107D and 8E0612107B for the same application.

What It Helps Address

• Hard brake pedal feel caused by a weak booster.
• Reduced braking assist from vacuum seal loss.
• Inconsistent pedal response during normal braking.
• Replacement needs after booster wear or internal diaphragm issues.

Installation Notes

Verify master cylinder stud thread size, pedal rod setup, and mounting configuration before installation. This booster does not include the master cylinder, brake pedal rod extension, gasket, seal, or mounting bracket. Confirm fitment by year, make, model, and brake system configuration for Audi A4, Audi A4 Quattro, Audi A6, Audi A6 Quattro, Audi S6, or Volkswagen Passat applications.

Quality Assurance

MPA Electrical tests every unit at the end of production to confirm function before release. The remanufactured construction and replacement-grade components are intended to restore braking assist performance to standard service expectations.