2017-2021 Audi Q7 Subwoofer / Bass Box Speaker Rear 4M0035621A
OEM Part #: 4M0-035-621-A (4M0035621A)
Actual photo
The exact part you’ll receive — not a stock photo.
$81.49
Side: Rear
Used
Donor2017 Audi Q7 · 3.0L
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Genuine OEM Used
SKU: 647033
Donor Vehicle: 2017 Audi Q7 · 3.0L
2 photos
$81.49
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Genuine OEM Used
SKU: 692805
Donor Vehicle: 2017 Audi Q7 · 2.0L
2 photos
$81.49
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Genuine OEM Used
SKU: 705059
Donor Vehicle: 2017 Audi Q7 · 3.0L
2 photos
$90.49
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The Audi Q7’s rear subwoofer, OEM 4M0035621A, is a used Bass Box Speaker that adds low-end punch to the factory audio system. Also known simply as the subwoofer or bass box, this unit was removed from a donor Q7 equipped with either the 2.0L turbo four, 3.0L supercharged V6, 3.0L diesel, or the 3.0L mild-hybrid turbo V6. When the subwoofer fails, common symptoms include distorted bass, rattling, or no output from the rear speaker.
Specifications
| Fits Vehicle Model | Q7 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4M0-035-621-A (4M0035621A) |
| Side | Rear |
| Category | Audio / Video |
Compatible Vehicles
Fits 10 vehicle configurations across 1 make, 2017-2021.
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 10 vehicle configurations — 3 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2021 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Vehicles with Production Date Between 03/02/20 and 07/20/20 |
| 2021 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles with Production Date Between 03/02/20 and 07/20/20 |
| 2019 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2020 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2017 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2017 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2018 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2018 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2019 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2020 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/15/20 |