2019-2026 Audi Q7/Q8/RS Q8/SQ8 Subwoofer / Bass Box Speaker Rear 4M8035621A
OEM Part #: 4M8-035-621-A (4M8035621A)
Actual photo
The exact part you’ll receive — not a stock photo.
$199.99
Side: Rear
Used
Donor2021 Audi SQ8 · 4.0L · 47k miles
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Only 1 in stock — no guaranteed restock
Genuine OEM Used
SKU: 700921
Donor Vehicle: 2021 Audi SQ8 · 4.0L · 47k miles
4 photos
$199.99
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A used Audi subwoofer / bass box speaker, OEM part number 4M8035621A, is available from a donor vehicle. This rear-mounted speaker delivers low-frequency audio for the premium sound system. It is a genuine OEM part, not an aftermarket replacement. When the subwoofer fails, you may notice a lack of bass or distorted, muffled sound from the rear of the vehicle.
Specifications
| Fits Vehicle Model | Q7, Q8, RS Q8, SQ8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4M8-035-621-A (4M8035621A) |
| Side | Rear |
| Category | Audio / Video |
Compatible Vehicles
Fits 29 vehicle configurations across 1 make, 2019-2026.
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 29 vehicle configurations — 13 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2026 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2025 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2025 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2026 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2026 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2021 | Audi | SQ8 | SUV | 4.0L V8 Turbo | SPEAKERS & AMPLIFIERS, premium, w/o advanced 3D |
| 2025 | Audi | Q8 | SUV | 3.0L V6 Turbo | SPEAKERS & AMPLIFIERS, premium, w/o advanced 3D |
| 2023 | Audi | SQ8 | SUV | 4.0L V8 Turbo | SPEAKERS & AMPLIFIERS, premium, w/o advanced 3D |
| 2022 | Audi | SQ8 | SUV | 4.0L V8 Turbo | SPEAKERS & AMPLIFIERS, premium, w/o advanced 3D |
| 2020 | Audi | SQ8 | SUV | 4.0L V8 Turbo | SPEAKERS & AMPLIFIERS, premium, w/o advanced 3D |
| 2025 | Audi | SQ8 | SUV | 4.0L V8 Turbo | SPEAKERS & AMPLIFIERS, premium, w/o advanced 3D |
| 2024 | Audi | SQ8 | SUV | 4.0L V8 Turbo | SPEAKERS & AMPLIFIERS, premium, w/o advanced 3D |
| 2024 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Vehicles with Production Date After 02/05/24 |
| 2023 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2024 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2025 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Vehicles with Production Date After 02/05/24 |
| 2026 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 02/05/24 |
| 2024 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 02/05/24 |
| 2026 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Vehicles with Production Date After 02/05/24 |
| 2020 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2021 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2025 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 02/05/24 |
| 2019 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2022 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2022 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2021 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2020 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2024 | Audi | RS Q8 | SUV | 4.0L V8 Turbo |