2017-2024 Audi Q7/Q8/RS Q8, Porsche Cayenne Coolant / Water Hose 4M0121123G
OEM Part #: 4M0-121-123-G (4M0121123G)
Actual photo
The exact part you’ll receive — not a stock photo.
$12.13
Used
Donor2018 Audi Q7 · 3.0L · 45k miles
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Genuine OEM Used
SKU: 505870
Donor Vehicle: 2018 Audi Q7 · 3.0L · 45k miles
2 photos
$12.13
30-Day Returns
Genuine OEM Used
SKU: 505867
Donor Vehicle: 2018 Audi Q7 · 3.0L · 45k miles
2 photos
$12.13
30-Day Returns
Genuine OEM Used
SKU: 532857
Donor Vehicle: 2017 Audi Q7 · 3.0L
2 photos
$12.13
30-Day Returns
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Used Genuine OEM Audi coolant/water hose with OEM part number 4M0121123G, removed from a donor vehicle. Also known as a water hose or coolant hose, this part carries engine coolant through the system. A failing hose may cause coolant leaks, overheating, or low coolant warnings. This hose fits multiple engine options including 2.0L, 2.9L, and 3.0L gasoline, diesel, and hybrid variants for Audi Q7, Q8, RS Q8, and Porsche Cayenne.
Specifications
| Fits Vehicle Model | Cayenne, Q7, Q8, RS Q8 |
| Fits Vehicle Make | Audi, Porsche |
| OEM Part No | 4M0-121-123-G (4M0121123G) |
| Category | Radiator / Coolant |
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
| 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 | |
| 2022 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2024 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2021 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2023 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2024 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2022 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2023 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2021 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2022 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2024 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2024 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2023 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2022 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2021 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2021 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2020 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2019 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2020 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2018 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2017 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2018 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2017 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2020 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2019 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2020 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2019 | Audi | Q8 | SUV | 3.0L V6 Turbo |