Audi A6/A7/A8/RS7/S6/S7 Transmission Brace / Sub Frame 4H0399345M
OEM Part #: 4H0-399-345-M (4H0399345M)
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:
Other Subframe / Sub Frame / Transmission Mount Bracket that may fit your vehicle
Automatic Transmission Mount / Support Bracket Assembly
$149.99
Fits 2015–2019 Audi
OEM: 4M0399153L
Engine / Transmission Mount Plate
$13.71
Fits 2012–2018 Audi A6
OEM: 4G0399059
Engine / Transmission Retaining Bracket Plate
$47.49
Fits 2015–2018 Audi A8 / S8
OEM: 4H0399059G
Transmission Brace / Mount Bracket
$79.99
Fits 2012–2018 Audi
OEM: 4H0399345Q
Transmission Cover Plate
$14.99
Fits 2008–2014 Audi
OEM: 8K0301257
Transmission Cover Plate
Starting at $7.99
Fits 2012–2026 Audi & Porsche
OEM: 8K0301257A
- Genuine OEM — real photos
- 30-day returns on eligible parts
- eBay Top Rated · 100,000+ positive ratings
- Ships from our own indoor warehouse
Enhance the structural integrity of your Audi with this genuine OEM Transmission Brace/Sub Frame, part number 4H0399345M. Sourced from meticulously inspected salvage vehicles, this factory-original component provides superior support for your transmission system. It's designed to eliminate common issues associated with worn or damaged cross-member assemblies, which can lead to vibrations and misalignments in performance. Compatible with various models including the 2018 Audi A6, A7, A8, S6, S7, and RS7, this part ensures a precise fit. Replace your old or non-functioning transmission support with this reliable OEM alternative to maintain optimal vehicle dynamics and safety.
Specifications
| Fits Vehicle Model | A6, A7, A8, RS7, S6, S7 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4H0-399-345-M (4H0399345M) |
| Compatible OEM Part No | 4H0-399-345-P, 4H0-399-345-Q |
| Category | Transmission |
Compatible Vehicles
Fits 56 vehicle configurations across 1 make, 2012-2018.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 56 vehicle configurations — 45 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2012 | Audi | A6 | Sedan | 2.0L l4 Turbo | For Manual Transmission; For Automatic Transmission |
| 2012 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2012 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Automatic Transmission |
| 2013 | Audi | A6 | Sedan | 2.0L l4 Turbo | For Manual Transmission; For Automatic Transmission |
| 2013 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2013 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Automatic Transmission |
| 2013 | Audi | A8 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2013 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2013 | Audi | S6 | Sedan | 4.0L V8 Turbo | |
| 2013 | Audi | S7 | Hatchback | 4.0L V8 Turbo | |
| 2014 | Audi | A6 | Sedan | 2.0L l4 Turbo | For Manual Transmission; For Automatic Transmission |
| 2014 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2014 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | For Automatic Transmission |
| 2014 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Automatic Transmission |
| 2014 | Audi | A7 | Quattro Hatchback | 3.0L V6 Diesel Turbo | For Automatic Transmission |
| 2014 | Audi | A8 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2014 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2014 | Audi | A8 | Quattro L Sedan | 3.0L V6 Diesel Turbo | For Automatic Transmission |
| 2014 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2014 | Audi | S6 | Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | S7 | Hatchback | 4.0L V8 Turbo | |
| 2015 | Audi | A6 | Sedan | 2.0L l4 Turbo | For Manual Transmission; For Automatic Transmission |
| 2015 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2015 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | For Automatic Transmission |
| 2015 | Audi | A8 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2015 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2015 | Audi | A8 | Quattro L Sedan | 3.0L V6 Diesel Turbo | For Automatic Transmission |
| 2015 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2015 | Audi | S6 | Sedan | 4.0L V8 Turbo | |
| 2016 | Audi | A6 | Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2016 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2016 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2016 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | For Automatic Transmission |
| 2016 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Automatic Transmission |
| 2016 | Audi | A7 | Quattro Hatchback | 3.0L V6 Diesel Turbo | For Automatic Transmission |
| 2016 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2016 | Audi | A8 | Quattro L Sedan | 3.0L V6 Diesel Turbo | For Automatic Transmission |
| 2016 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2016 | Audi | S6 | Sedan | 4.0L V8 Turbo | |
| 2016 | Audi | S7 | Hatchback | 4.0L V8 Turbo | |
| 2017 | Audi | A6 | Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2017 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Automatic Transmission |
| 2017 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2017 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2017 | Audi | S6 | Sedan | 4.0L V8 Turbo | |
| 2017 | Audi | S7 | Hatchback | 4.0L V8 Turbo | |
| 2018 | Audi | A6 | Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2018 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2018 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2018 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Automatic Transmission |
| 2018 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | For Automatic Transmission |
| 2018 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2018 | Audi | S6 | Sedan | 4.0L V8 Turbo | |
| 2018 | Audi | S7 | Hatchback | 4.0L V8 Turbo |