Audi / Volkswagen Power Brake Booster 4B3612105
OEM Part #: 4B3-612-105 (4B3612105)
This page covers one exact OEM part number. Every unit we stocked has sold.
We may be able to get another
Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:
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Enhance braking performance with this OEM Power Brake Booster, precisely engineered for a variety of Audi and Volkswagen models, including the Audi A4, A6, Allroad Quattro, S4, and the Volkswagen Passat from 1998 to 2002. This factory-original brake booster, part number 4B3612107 and its alternative 4B3612105, is strategically located in the engine bay, connecting the master cylinder with the brake pedal to amplify braking force with minimal effort. Designed to combat issues such as diminished braking responsiveness or complete system failure, this authentic part ensures that your vehicle maintains optimal braking efficiency. It fits seamlessly into your vehicle's brake system, enhancing safety during operation while adhering to the highest standards of quality and reliability associated with OEM components.
Specifications
| Fits Vehicle Model | A4, A6, Allroad, Passat, S4 |
| Fits Vehicle Make | Audi, Volkswagen |
| OEM Part No | 4B3-612-105 (4B3612105) |
| Compatible OEM Part No | 4B3-612-107 |
| Category | Brake Booster |
Compatible Vehicles
Fits 69 vehicle configurations across 2 makes, 1998-2005.
View all 69 vehicle configurations — 15 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 1998 | Audi | A6 | Sedan | 2.8L V6 | |
| 1998 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 1999 | Audi | A4 | Sedan | 1.8L l4 Turbo | |
| 1999 | Audi | A4 | Sedan | 2.8L V6 | |
| 1999 | Audi | A4 | Quattro Wagon | 1.8L l4 Turbo | |
| 1999 | Audi | A4 | Quattro Wagon | 2.8L V6 | |
| 1999 | Audi | A4 | Quattro Sedan | 1.8L l4 Turbo | |
| 1999 | Audi | A4 | Quattro Sedan | 2.8L V6 | |
| 1999 | Audi | A6 | Sedan | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 120001 |
| 1999 | Audi | A6 | Quattro Wagon | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 120001 |
| 1999 | Audi | A6 | Quattro Sedan | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 120001 |
| 2000 | Audi | A4 | Sedan | 1.8L l4 Turbo | |
| 2000 | Audi | A4 | Sedan | 2.8L V6 | |
| 2000 | Audi | A4 | Quattro Wagon | 1.8L l4 Turbo | |
| 2000 | Audi | A4 | Quattro Wagon | 2.8L V6 | |
| 2000 | Audi | A4 | Quattro Sedan | 1.8L l4 Turbo | |
| 2000 | Audi | A4 | Quattro Sedan | 2.8L V6 | |
| 2000 | Audi | A6 | Sedan | 2.8L V6 | |
| 2000 | Audi | A6 | Quattro Wagon | 2.8L V6 | |
| 2000 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2000 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 2000 | Audi | A6 | Quattro Sedan | 4.2L V8 | |
| 2000 | Audi | S4 | Sedan | 2.7L V6 Turbo | |
| 2001 | Audi | A4 | Sedan | 1.8L l4 Turbo | |
| 2001 | Audi | A4 | Sedan | 2.8L V6 | |
| 2001 | Audi | A4 | Quattro Wagon | 1.8L l4 Turbo | |
| 2001 | Audi | A4 | Quattro Wagon | 2.8L V6 | |
| 2001 | Audi | A4 | Quattro Sedan | 1.8L l4 Turbo | |
| 2001 | Audi | A4 | Quattro Sedan | 2.8L V6 | |
| 2001 | Audi | A6 | Sedan | 2.8L V6 | |
| 2001 | Audi | A6 | Quattro Wagon | 2.8L V6 | |
| 2001 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2001 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 2001 | Audi | A6 | Quattro Sedan | 4.2L V8 | |
| 2001 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2001 | Audi | S4 | Wagon | 2.7L V6 Turbo | |
| 2001 | Audi | S4 | Sedan | 2.7L V6 Turbo | |
| 2002 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2002 | Audi | S4 | Wagon | 2.7L V6 Turbo | |
| 2002 | Audi | S4 | Sedan | 2.7L V6 Turbo | |
| 2003 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2004 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2004 | Audi | Allroad | Quattro Wagon | 4.2L V8 | |
| 2005 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2005 | Audi | Allroad | Quattro Wagon | 4.2L V8 | |
| 1999 | Volkswagen | Passat | Sedan | 1.8L l4 Turbo | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 491581 |
| 1999 | Volkswagen | Passat | Sedan | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 491581 |
| 1999 | Volkswagen | Passat | Wagon | 1.8L l4 Turbo | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 491581 |
| 1999 | Volkswagen | Passat | Wagon | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 491581 |
| 2000 | Volkswagen | Passat | 4 Sedan | 2.8L V6 | |
| 2000 | Volkswagen | Passat | 4 Wagon | 2.8L V6 | |
| 2000 | Volkswagen | Passat | Sedan | 1.8L l4 Turbo | |
| 2000 | Volkswagen | Passat | Sedan | 2.8L V6 | |
| 2000 | Volkswagen | Passat | Wagon | 1.8L l4 Turbo | |
| 2000 | Volkswagen | Passat | Wagon | 2.8L V6 | |
| 2001 | Volkswagen | Passat | 4 Sedan | 2.8L V6 | |
| 2001 | Volkswagen | Passat | 4 Wagon | 2.8L V6 | |
| 2001 | Volkswagen | Passat | Sedan | 1.8L l4 Turbo | |
| 2001 | Volkswagen | Passat | Sedan | 2.8L V6 | |
| 2001 | Volkswagen | Passat | Wagon | 1.8L l4 Turbo | |
| 2001 | Volkswagen | Passat | Wagon | 2.8L V6 | |
| 2002 | Volkswagen | Passat | 4 Sedan | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Less Than 010026 |
| 2002 | Volkswagen | Passat | 4 Wagon | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Less Than 010026 |
| 2002 | Volkswagen | Passat | Sedan | 1.8L l4 Turbo | For Vehicles Where Last 6 Digits of VIN Number are Less Than 010026 |
| 2002 | Volkswagen | Passat | Sedan | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Less Than 010026 |
| 2002 | Volkswagen | Passat | Wagon | 1.8L l4 Turbo | For Vehicles Where Last 6 Digits of VIN Number are Less Than 010026 |
| 2002 | Volkswagen | Passat | Wagon | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Less Than 010026 |
| 2002 | Volkswagen | Passat | Sedan | 4.0L W8 | For Vehicles Where Last 6 Digits of VIN Number are Less Than 010026 |
| 2002 | Volkswagen | Passat | Wagon | 4.0L W8 | For Vehicles Where Last 6 Digits of VIN Number are Less Than 010026 |