2017-2026 Audi Transmission Brace / Sub Frame 4M1399345F
OEM Part #: 4M1-399-345-F (4M1399345F)
Actual photo
The exact part you’ll receive — not a stock photo.
$149.99
Used
Donor2021 Audi SQ8 · 4.0L · 47k miles
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Genuine OEM Used
SKU: 701567
Donor Vehicle: 2021 Audi SQ8 · 4.0L · 47k miles
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$149.99
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Audi transmission brace / sub frame OEM 4M1399345F, a used genuine OEM part from a donor vehicle. This brace also replaces 4M1399345C. It supports the transmission and reinforces the sub frame, reducing drivetrain vibration and noise. Over time, a cracked or worn brace can cause clunking, misalignment, or harsh shifts. This brace fits models with various 2.0L, 3.0L, and 4.0L engines.
Specifications
| Fits Vehicle Model | Q7, Q8, RS Q8, SQ7, SQ8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4M1-399-345-F (4M1399345F) |
| Compatible OEM Part No | 4M1-399-345-C |
| Category | Underbody |
Compatible Vehicles
Fits 39 vehicle configurations across 1 make, 2017-2026.
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 39 vehicle configurations — 27 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2017 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2023 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2022 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2022 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2021 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2021 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2020 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2020 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2018 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2018 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2017 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2025 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2020 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2024 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/19/19 |
| 2023 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/19/19 |
| 2019 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2023 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2026 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2023 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2021 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/19/19 |
| 2020 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/19/19 |
| 2026 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2024 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2022 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2024 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2019 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/19/19 |
| 2019 | Audi | Q7 | SUV | 3.0L V6 Supercharged | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2025 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2022 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Automatic Transmission |
| 2022 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2024 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Automatic Transmission |
| 2021 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2022 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/19/19 |
| 2020 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2021 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Automatic Transmission |
| 2023 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Automatic Transmission |
| 2021 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 08/12/19 |
| 2020 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Automatic Transmission |