2016-2018 Audi S6/S7 Coolant Reservoir Hose / Line 4G0122109AK
OEM Part #: 4G0-122-109-AK (4G0122109AK)
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The exact part you’ll receive — not a stock photo.
$19.49
Used
Donor2016 Audi S6 · 4.0L
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Genuine OEM Used
SKU: 650579
Donor Vehicle: 2016 Audi S6 · 4.0L
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$19.49
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Used Audi OEM Coolant Reservoir Hose / Line, part number 4G0122109AK, removed from a donor vehicle. This genuine hose (also called coolant reservoir line) circulates coolant between the expansion tank and the 4.0L twin-turbo V8 found in Audi S6 and S7 models. Over time, the plastic connector or rubber section can crack, leading to coolant leaks, low coolant warnings, and potential overheating. This used factory part offers a direct replacement at a fraction of the dealer price.
Specifications
| Fits Vehicle Model | S6, S7 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4G0-122-109-AK (4G0122109AK) |
| 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 — 6 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2017 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Vehicles with Production Date After 01/19/15 |
| 2018 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Vehicles with Production Date After 01/19/15 |
| 2018 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Vehicles with Production Date After 01/19/15 |
| 2017 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Vehicles with Production Date After 01/19/15 |
| 2016 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Vehicles with Production Date After 01/19/15 |
| 2016 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Vehicles with Production Date After 01/19/15 |