2020-2026 Audi RS Q8/SQ8 Coolant / Water Hose 4M0121056AQ
OEM Part #: 4M0-121-056-AQ (4M0121056AQ)
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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Genuine OEM Used
SKU: 701491
Donor Vehicle: 2021 Audi SQ8 · 4.0L · 47k miles
2 photos
$69.99
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Audi Coolant / Water Hose, OEM part number 4M0121056AQ, is a used genuine pipe from a donor vehicle. Also known as a coolant hose or water hose, this component circulates coolant through the 4.0L V8 MHEV twin-turbo engine found in the RS Q8 and SQ8. A cracked or degraded hose can lead to coolant leaks and engine overheating.
Specifications
| Fits Vehicle Model | RS Q8, SQ8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4M0-121-056-AQ (4M0121056AQ) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 14 vehicle configurations across 1 make, 2020-2026.
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 14 vehicle configurations — 5 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2026 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles with Production Date After 08/05/24 |
| 2026 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2025 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2022 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2020 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2021 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2024 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2025 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2021 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 08/05/24 |
| 2020 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 08/05/24 |
| 2023 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 08/05/24 |
| 2024 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2022 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 08/05/24 |