2017-2026 Audi / Porsche AC Expansion Valve 4M0816679
OEM Part #: 4M0-816-679 (4M0816679)
Porsche Part #: PAB81667900
Actual photo
The exact part you’ll receive — not a stock photo.
$69.99
Used
Donor2021 Audi SQ8 · 4.0L · 47k miles
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Only 1 in stock — no guaranteed restock
Genuine OEM Used
SKU: 701192
Donor Vehicle: 2021 Audi SQ8 · 4.0L · 47k miles
2 photos
$69.99
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Used OEM AC Expansion Valve, part number 4M0816679 (also listed as Porsche PAB81667900), sourced from a donor vehicle. This valve controls refrigerant flow into the evaporator to regulate cabin cooling; when it fails, you may notice inconsistent A/C temperatures or a complete loss of cold air. It fits multiple Audi and Porsche models with 2.0L, 2.9L, 3.0L, and 4.0L engines, including turbocharged and hybrid variants.
Specifications
| Fits Vehicle Model | A8, Cayenne, Q7, Q8, RS Q8, S8, SQ7, SQ8 |
| Fits Vehicle Make | Audi, Porsche |
| OEM Part No | 4M0-816-679 (4M0816679) |
| Porsche Part No | PAB81667900 |
| Category | Air Conditioning |
Compatible Vehicles
Fits 142 vehicle configurations across 2 makes, 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 142 vehicle configurations — 54 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2018 | Porsche | Cayenne | SUV | 3.6L V6 | |
| 2018 | Porsche | Cayenne | GTS SUV | 3.6L V6 Turbo | |
| 2018 | Porsche | Cayenne | S SUV | 3.6L V6 Turbo | |
| 2018 | Porsche | Cayenne | Turbo SUV | 4.8L V8 Turbo | |
| 2018 | Porsche | Cayenne | Turbo S SUV | 4.8L V8 Turbo | |
| 2019 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2019 | Porsche | Cayenne | S SUV | 2.9L V6 Turbo | |
| 2019 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2020 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2020 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2020 | Porsche | Cayenne | S Coupe SUV | 2.9L V6 Turbo | |
| 2020 | Porsche | Cayenne | S SUV | 2.9L V6 Turbo | |
| 2020 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2020 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2021 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2021 | Porsche | Cayenne | GTS Coupe SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | GTS SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | S Coupe SUV | 2.9L V6 Turbo | |
| 2021 | Porsche | Cayenne | S SUV | 2.9L V6 Turbo | |
| 2021 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2022 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2022 | Porsche | Cayenne | GTS SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | S Coupe SUV | 2.9L V6 Turbo | |
| 2022 | Porsche | Cayenne | S SUV | 2.9L V6 Turbo | |
| 2022 | Porsche | Cayenne | Turbo Coupe 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 | |
| 2019 | Audi | A8 | Quattro L Sedan | 3.0L V6 Turbo | |
| 2019 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2019 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2020 | Audi | A8 | Quattro L Sedan | 3.0L V6 Turbo | |
| 2020 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2020 | Audi | Q7 | 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 | S8 | Sedan | 4.0L V8 Turbo | |
| 2020 | Audi | SQ7 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2020 | Audi | SQ8 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2021 | Audi | A8 | Quattro L Sedan | 3.0L V6 Turbo | |
| 2021 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2021 | Audi | Q7 | SUV | 3.0L V6 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 |
| 2021 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2021 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2021 | Audi | SQ7 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2021 | Audi | SQ8 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2022 | Audi | A8 | Quattro L Sedan | 3.0L V6 Turbo | |
| 2022 | Audi | Q7 | SUV | 3.0L V6 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 |
| 2022 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2022 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2022 | Audi | SQ7 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2022 | Audi | SQ8 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2023 | Audi | A8 | Quattro L Sedan | 3.0L V6 Turbo | |
| 2023 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2023 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2023 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2023 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2023 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2023 | Audi | SQ7 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2023 | Audi | SQ8 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2018 | Porsche | Cayenne | S SUV | 3.0L V6 Supercharged | |
| 2020 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2020 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | GTS Coupe SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2023 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2023 | Porsche | Cayenne | GTS Coupe SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | GTS SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | S Coupe SUV | 2.9L V6 Turbo | |
| 2023 | Porsche | Cayenne | S SUV | 2.9L V6 Turbo | |
| 2023 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Turbo GT Coupe SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2024 | Audi | A8 | Quattro L Sedan | 3.0L V6 Turbo | |
| 2024 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2024 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2024 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2024 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 06/19/23 |
| 2024 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2024 | Audi | SQ7 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2024 | Audi | SQ8 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2025 | Audi | Q8 | SUV | 3.0L V6 Turbo | For Primary HVAC, R1234yf Refrigerant |
| 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 | |
| 2024 | Porsche | Cayenne | S SUV | 3.0L V6 Turbo | |
| 2024 | Porsche | Cayenne | S SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | Turbo GT Coupe SUV | 4.0L V8 Turbo | |
| 2025 | Audi | A8 | Quattro L Sedan | 3.0L V6 Turbo | For Primary HVAC |
| 2025 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2025 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2025 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Primary HVAC |
| 2025 | Audi | SQ7 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2025 | Audi | SQ8 | SUV | 4.0L V8 Turbo | For Primary HVAC |
| 2025 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2025 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | R1234yf Refrigerant |
| 2025 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2025 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | R1234yf Refrigerant |
| 2025 | Porsche | Cayenne | S Coupe SUV | 4.0L V8 Turbo | R1234yf Refrigerant |
| 2025 | Porsche | Cayenne | S Coupe SUV | 3.0L V6 Turbo | |
| 2025 | Porsche | Cayenne | S SUV | 3.0L V6 Turbo | |
| 2025 | Porsche | Cayenne | S SUV | 4.0L V8 Turbo | R1234yf Refrigerant |
| 2025 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2025 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2025 | Porsche | Cayenne | Turbo GT Coupe SUV | 4.0L V8 Turbo | R1234yf Refrigerant |
| 2026 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2026 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2025 | Porsche | Cayenne | GTS Coupe SUV | 4.0L V8 Turbo | R1234yf Refrigerant |
| 2025 | Porsche | Cayenne | GTS SUV | 4.0L V8 Turbo | R1234yf Refrigerant |
| 2026 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | R1234yf, FRONT W/O E-HYBRID |
| 2026 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | R1234yf, FRONT W/O E-HYBRID |
| 2026 | Porsche | Cayenne | GTS Coupe SUV | 4.0L V8 Turbo | R1234yf, FRONT W/O E-HYBRID |
| 2026 | Porsche | Cayenne | GTS SUV | 4.0L V8 Turbo | R1234yf, FRONT W/O E-HYBRID |
| 2026 | Porsche | Cayenne | S Coupe SUV | 4.0L V8 Turbo | R1234yf, FRONT W/O E-HYBRID |
| 2026 | Porsche | Cayenne | S Coupe SUV | 3.0L V6 Turbo | R1234yf, FRONT W/O E-HYBRID |
| 2026 | Porsche | Cayenne | S SUV | 3.0L V6 Turbo | R1234yf, FRONT W/O E-HYBRID |
| 2026 | Porsche | Cayenne | S SUV | 4.0L V8 Turbo | R1234yf, FRONT W/O E-HYBRID |
| 2026 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | R1234yf, FRONT W/O E-HYBRID |
| 2026 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | R1234yf, FRONT W/O E-HYBRID |
| 2026 | Porsche | Cayenne | Turbo GT Coupe SUV | 4.0L V8 Turbo | R1234yf, FRONT W/O E-HYBRID |
| 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 |
| 2018 | Audi | Q7 | SUV | 2.0L l4 Turbo | 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 |
| 2019 | Audi | Q7 | SUV | 2.0L l4 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 |
| 2020 | Audi | Q7 | SUV | 2.0L l4 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 | Q7 | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 06/19/23 |