2017-2024 Audi Q7/Q8/RS Q8, Porsche Cayenne AC Expansion Valve 4M0820679A
OEM Part #: 4M0-820-679-A (4M0820679A)
Actual photo
The exact part you’ll receive — not a stock photo.
$19.49
Used
Donor2017 Audi Q7 · 3.0L
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Only 2 in stock — no guaranteed restock
Genuine OEM Used
SKU: 551143
Donor Vehicle: 2017 Audi Q7 · 3.0L
3 photos
$19.49
30-Day Returns
Genuine OEM Used
SKU: 588566
Donor Vehicle: 2018 Audi Q7 · 3.0L
3 photos
$19.49
30-Day Returns
- Genuine OEM — real photos
- 30-day returns on eligible parts
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Used OEM Audi AC Expansion Valve, part number 4M0820679A. This genuine Audi component is also known as an A/C expansion valve or refrigerant metering valve. It regulates refrigerant flow into the evaporator, and when it fails, a common symptom is insufficient cabin cooling or intermittent A/C operation.
Specifications
| Fits Vehicle Model | Cayenne, Q7, Q8, RS Q8 |
| Fits Vehicle Make | Audi, Porsche |
| OEM Part No | 4M0-820-679-A (4M0820679A) |
| Category | Air Conditioning |
Compatible Vehicles
Fits 85 vehicle configurations across 2 makes, 2017-2024.
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 85 vehicle configurations — 27 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2023 | Porsche | Cayenne | S Coupe SUV | 2.9L V6 Turbo | |
| 2022 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2024 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2024 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2024 | Porsche | Cayenne | S Coupe SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | S Coupe SUV | 3.0L V6 Turbo | |
| 2021 | Porsche | Cayenne | GTS Coupe SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | S SUV | 2.9L V6 Turbo | |
| 2020 | Porsche | Cayenne | S SUV | 2.9L V6 Turbo | |
| 2021 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | Turbo GT Coupe SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | GTS SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2023 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2023 | Porsche | Cayenne | Turbo GT Coupe SUV | 4.0L V8 Turbo | |
| 2020 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2020 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2022 | Porsche | Cayenne | S SUV | 2.9L V6 Turbo | |
| 2019 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2018 | Porsche | Cayenne | SUV | 3.6L V6 | |
| 2018 | Porsche | Cayenne | S SUV | 3.6L V6 Turbo | |
| 2018 | Porsche | Cayenne | Turbo SUV | 4.8L V8 Turbo | |
| 2018 | Porsche | Cayenne | GTS SUV | 3.6L V6 Turbo | |
| 2018 | Porsche | Cayenne | S SUV | 3.0L V6 Supercharged | |
| 2018 | Porsche | Cayenne | Turbo S SUV | 4.8L V8 Turbo | |
| 2019 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2019 | Porsche | Cayenne | S SUV | 2.9L V6 Turbo | |
| 2020 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2020 | Porsche | Cayenne | S Coupe SUV | 2.9L V6 Turbo | |
| 2020 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2020 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2020 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | S Coupe SUV | 2.9L V6 Turbo | |
| 2023 | Porsche | Cayenne | S SUV | 2.9L V6 Turbo | |
| 2021 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2022 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2021 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | GTS SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | Turbo GT Coupe SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | GTS Coupe SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | S Coupe SUV | 2.9L V6 Turbo | |
| 2023 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2022 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | S SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | S SUV | 3.0L V6 Turbo | |
| 2022 | Porsche | Cayenne | GTS SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | GTS Coupe SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2024 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2024 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2024 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2024 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2021 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2022 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2020 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2023 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2022 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2023 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2023 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2021 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2020 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2020 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2020 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2023 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2022 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2021 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2021 | Audi | Q7 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2019 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2019 | Audi | Q7 | SUV | 3.0L V6 Supercharged | For Vehicles With Production date Up To 06/19/23 |
| 2018 | Audi | Q7 | SUV | 3.0L V6 Supercharged | For Vehicles With Production date Up To 06/19/23 |
| 2018 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2017 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2017 | Audi | Q7 | SUV | 3.0L V6 Supercharged | For Vehicles With Production date Up To 06/19/23 |
| 2019 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2022 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 06/19/23 |