MPA Electrical B3363 Power Brake Booster

Vacuum Brake Booster for Audi and Volkswagen

MPA Electrical B3363 is a remanufactured vacuum power brake booster for select Audi Q3, Audi Q3 Quattro, Volkswagen Tiguan, Volkswagen Tiguan Limited, Volkswagen CC, Volkswagen Passat, and Volkswagen Passat CC applications. This reman Vac Pwr Brake Booster w/o Master Cyl is built for drivers who need consistent brake assist and a firm, predictable pedal feel.

Key Features

• Remanufactured vacuum brake booster with standard replacement service grade
• 11.75 in. diaphragm diameter for vacuum-assisted braking performance
• Metal housing for durable brake system service
• 2 mounting studs with 8 x 1.25 mm master cylinder stud thread size
• Master cylinder not included
• Brake pedal rod extension not included
• Mounting bracket, gasket or seal, and front seal not included

Product Details

MPA Electrical’s B3363 brake booster is remanufactured and tested to deliver reliable vacuum assist with reduced pedal effort. The unit uses specially treated replacement components to help maintain vacuum sealing and pressure transfer, while end-of-line testing verifies function before release. This makes it a practical OE-style replacement for drivers servicing brake systems on 2007-2018 Audi and Volkswagen platforms, including the Volkswagen Tiguan, Volkswagen Passat, and Audi Q3.

This part cross-references 3C1614106Q and 5N1614106A for the same application.

What It Helps Fix

• Hard brake pedal feel
• Reduced brake assist from vacuum loss
• Inconsistent pedal response during braking
• Brake booster failure on select Audi Q3 and Volkswagen models
• Vacuum seal issues affecting brake performance

Installation Notes

Verify master cylinder compatibility before installation, since the master cylinder is not included. Confirm the 8 x 1.25 mm stud thread size, 2-stud mounting layout, and 11.75 in. diaphragm diameter against the original unit. For best results, inspect vacuum supply lines, pedal linkage, and related brake components during replacement.

Quality Assurance

MPA Electrical remanufactures this booster with replacement and specially treated components, then subjects each unit to 100% end-of-line testing using proprietary equipment to confirm braking assist performance and vacuum seal integrity.