2019-2026 Audi Primary HVAC Heater Coolant Hose Assembly 4M8819350
OEM Part #: 4M8-819-350 (4M8819350)
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: 701450
Donor Vehicle: 2021 Audi SQ8 · 4.0L · 47k miles
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$69.99
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A used genuine OEM Audi Primary HVAC Heater Coolant Hose Assembly, part number 4M8819350, is a factory coolant hose removed from a donor vehicle. This assembly circulates hot engine coolant to the heating system; a failure can cause a cabin heat loss or a coolant leak under the hood. It fits Audi Q8, RS Q8, and SQ8 models with the 3.0L V6 MHEV or PHEV and 4.0L V8 MHEV turbocharged engines.
Specifications
| Fits Vehicle Model | Q8, RS Q8, SQ8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4M8-819-350 (4M8819350) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 22 vehicle configurations across 1 make, 2019-2026.
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 22 vehicle configurations — 1 with fitment note
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2026 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2026 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2026 | Audi | Q8 | SUV | 3.0L V6 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 | |
| 2025 | Audi | Q8 | SUV | 3.0L V6 Turbo | Primary HVAC |
| 2021 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2020 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2024 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2023 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2022 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2019 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2024 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2022 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2021 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2020 | Audi | RS Q8 | SUV | 4.0L V8 Turbo |