2019-2024 Audi A6/S6 Air Vent / Duct Rear 4K0857042
OEM Part #: 4K0-857-042 (4K0857042)
Actual photo
The exact part you’ll receive — not a stock photo.
$23.49
Side: Rear
Used
Donor2019 Audi A6 · 3.0L
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Genuine OEM Used
SKU: 567166
Donor Vehicle: 2019 Audi A6 · 3.0L
3 photos
$23.49
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This used OEM Audi rear air vent (part 4K0857042) directs airflow to back-seat passengers in the A6, A6 Quattro, S6, and S7. Also called a duct, it handles cabin climate distribution for the rear of the vehicle. A worn or broken vent can cause weak airflow or rattling, so replacing it restores proper rear HVAC function.
Specifications
| Fits Vehicle Model | A6, S6 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4K0-857-042 (4K0857042) |
| Side | Rear |
| Category | HVAC / Climate Control |
Compatible Vehicles
Fits 17 vehicle configurations across 1 make, 2019-2024.
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 17 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2019 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2020 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2024 | Audi | A6 | Quattro Sedan | 3.0L V6 Turbo | |
| 2024 | Audi | S6 | Sedan | 2.9L V6 Turbo | |
| 2024 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2021 | Audi | A6 | Quattro Sedan | 3.0L V6 Turbo | |
| 2023 | Audi | S6 | Sedan | 2.9L V6 Turbo | |
| 2022 | Audi | A6 | Quattro Sedan | 3.0L V6 Turbo | |
| 2020 | Audi | A6 | Quattro Sedan | 3.0L V6 Turbo | |
| 2021 | Audi | S6 | Sedan | 2.9L V6 Turbo | |
| 2023 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2020 | Audi | S6 | Sedan | 2.9L V6 Turbo | |
| 2023 | Audi | A6 | Quattro Sedan | 3.0L V6 Turbo | |
| 2019 | Audi | A6 | Quattro Sedan | 3.0L V6 Turbo | |
| 2021 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2022 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2022 | Audi | S6 | Sedan | 2.9L V6 Turbo |