2016-2018 Audi A6 Heater Core Coolant Hose / Line 4G1819371AQ
OEM Part #: 4G1-819-371-AQ (4G1819371AQ)
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The exact part you’ll receive — not a stock photo.
$12.99
Used
Donor2017 Audi A6 · 2.0 · 52k miles
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Genuine OEM Used
SKU: 431327
Donor Vehicle: 2017 Audi A6 · 2.0 · 52k miles
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$12.99
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This used OEM Audi heater core coolant hose (part number 4G1819371AQ) is a genuine coolant line designed for 1.8L and 2.0L turbocharged four-cylinder engines. Also referred to as a heater core coolant line, it circulates hot coolant from the engine to the heater core for cabin heat. When this hose fails, it can leak coolant, leading to low coolant levels and poor heater performance.
Specifications
| Fits Vehicle Model | A6 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4G1-819-371-AQ (4G1819371AQ) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 6 vehicle configurations across 1 make, 2016-2018.
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 6 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2018 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2018 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2017 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2017 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2016 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2016 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo |