Audi A8/S8 Sub Frame Mount Bracket Left 4H0399633A
OEM Part #: 4H0-399-633-A (4H0399633A)
This page covers one exact OEM part number. Every unit we stocked has sold.
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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:
Other Sub Frame Mount / Bracket that may fit your vehicle
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The Sub Frame Mount Bracket (OEM 4H0399643B, 4H0399643A, and Bosch 4H0399633A) is a critical component located on the left side of the vehicle’s subframe, specifically designed for Audi A8 Quattro (2011-2018) and Audi S8 (2013-2018) models. Its primary function is to securely attach the subframe to the vehicle's chassis, ensuring stability and optimal alignment of the suspension system. Common issues requiring replacement include wear, corrosion, or damage from impacts, which can lead to handling problems, excessive noise, or misaligned components. As an authentic OEM part sourced from salvage vehicles, this bracket is essential for restoring proper vehicle dynamics and enhancing overall safety.
Specifications
| Fits Vehicle Model | A8, S8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4H0-399-633-A (4H0399633A) |
| Compatible OEM Part No | 4H0-399-643-B, 4H0-399-643-A |
| Side | Left |
| Category | Underbody |
Compatible Vehicles
Fits 36 vehicle configurations across 1 make, 2011-2018.
View all 36 vehicle configurations — 36 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2011 | Audi | A8 | Quattro Sedan | 4.2L V8 | For Automatic Transmission |
| 2011 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Automatic Transmission |
| 2012 | Audi | A8 | Quattro Sedan | 4.2L V8 | For Automatic Transmission |
| 2012 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Automatic Transmission |
| 2012 | Audi | A8 | Quattro L Sedan | 6.3L W12 | For Automatic Transmission |
| 2013 | Audi | A8 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2013 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2013 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2013 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2013 | Audi | A8 | Quattro L Sedan | 6.3L W12 | For Automatic Transmission |
| 2013 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2014 | Audi | A8 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2014 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2014 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2014 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2014 | Audi | A8 | Quattro L Sedan | 3.0L V6 Diesel Turbo | For Automatic Transmission |
| 2014 | Audi | A8 | Quattro L Sedan | 6.3L W12 | For Automatic Transmission |
| 2014 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2015 | Audi | A8 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2015 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2015 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2015 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2015 | Audi | A8 | Quattro L Sedan | 3.0L V6 Diesel Turbo | For Automatic Transmission |
| 2015 | Audi | A8 | Quattro L Sedan | 6.3L W12 | For Automatic Transmission |
| 2015 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2016 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2016 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2016 | Audi | A8 | Quattro L Sedan | 3.0L V6 Diesel Turbo | For Automatic Transmission |
| 2016 | Audi | A8 | Quattro L Sedan | 6.3L W12 | For Automatic Transmission |
| 2016 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2017 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2017 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2017 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2018 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2018 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2018 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Automatic Transmission |