2019-2023 Audi A6/S6 Coolant Reservoir Hose / Line 4K1121123A

OEM Part #: 4K1-121-123-A (4K1121123A)

$8.50
Used
Donor2019 Audi A6 · 3.0L
SKU: 567477 · 30-Day Returns
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Coolant Reservoir Hose / Line 4K1121123A — Used (SKU 567477)
Genuine OEM Used SKU: 567477 Donor Vehicle: 2019 Audi A6 · 3.0L 2 photos
$8.50
30-Day Returns
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Audi 4K1121123A Coolant Reservoir Hose / Line, a used OEM part. This genuine hose (also superseding 4K1121123) came from an Audi donor and routes coolant between the expansion tank and engine. It fits the 2.9L and 3.0L V6 MHEV twin-turbo engines found in the A6 Quattro, S6, and S7. A failing reservoir hose often causes coolant loss, low-level warnings, or visible seepage at the connections.

Specifications

Specifications for Coolant Reservoir Hose / Line 4K1121123A
Fits Vehicle ModelA6, S6
Fits Vehicle MakeAudi
OEM Part No4K1-121-123-A (4K1121123A)
Compatible OEM Part No 4K1-121-123
CategoryRadiator / Coolant

Compatible Vehicles

Fits 9 vehicle configurations across 1 make, 2019-2023.

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.

Audi

  • A6 2019-2023 · 5 variants 5 with notes
  • S6 2020-2023 · 4 variants 4 with notes
View all 9 vehicle configurations — 9 with fitment notes
Full vehicle fitment list for Coolant Reservoir Hose / Line 4K1121123A
Year Make Model Trim Engine Note
2023 Audi S6 Sedan 2.9L V6 Turbo For Vehicles with Production Date Between 05/16/22 and 09/05/22
2021 Audi A6 Quattro Sedan 3.0L V6 Turbo For Vehicles With Production date Up To 05/16/22
2021 Audi S6 Sedan 2.9L V6 Turbo For Vehicles With Production date Up To 05/16/22
2022 Audi A6 Quattro Sedan 3.0L V6 Turbo For Vehicles with Production Date Between 05/16/22 and 09/05/22
2020 Audi A6 Quattro Sedan 3.0L V6 Turbo For Vehicles With Production date Up To 05/16/22
2023 Audi A6 Quattro Sedan 3.0L V6 Turbo For Vehicles with Production Date Between 05/16/22 and 09/05/22
2020 Audi S6 Sedan 2.9L V6 Turbo For Vehicles With Production date Up To 05/16/22
2019 Audi A6 Quattro Sedan 3.0L V6 Turbo For Vehicles With Production date Up To 05/16/22
2022 Audi S6 Sedan 2.9L V6 Turbo For Vehicles with Production Date Between 05/16/22 and 09/05/22

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