2013-2018 Audi A8/S8 Lower Radiator Coolant Hose / Line 4H0121056L
OEM Part #: 4H0-121-056-L (4H0121056L)
Actual photo
The exact part you’ll receive — not a stock photo.
$19.49
Used
Donor2015 Audi A8 · 4.0L
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Genuine OEM Used
SKU: 665363
Donor Vehicle: 2015 Audi A8 · 4.0L
2 photos
$19.49
30-Day Returns
Genuine OEM Used
SKU: 674748
Donor Vehicle: 2015 Audi A8 · 4.0L
2 photos
$19.49
30-Day Returns
- Genuine OEM — real photos
- 30-day returns on eligible parts
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This used OEM lower radiator coolant hose/line carries part number 4H0121056L and came from a donor Audi. Designed for the 4.0L turbocharged V8 in the A8 and S8, this genuine Audi coolant hose routes coolant from the radiator to the engine. When the rubber cracks or the connection weakens, it can cause coolant leaks and potential overheating. Also known simply as a coolant line, this is a direct-fit replacement for the factory hose.
Specifications
| Fits Vehicle Model | A8, S8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4H0-121-056-L (4H0121056L) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 15 vehicle configurations across 1 make, 2013-2018.
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 15 vehicle configurations — 15 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2017 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CTGA, CTGF |
| 2016 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CTGA, CTGF |
| 2018 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CTGA, CTGF |
| 2018 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CTGA, CTGF |
| 2017 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CTGA, CTGF |
| 2015 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CTGA, CTGF |
| 2016 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CTGA, CTGF |
| 2015 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CTGA, CTGF |
| 2015 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CTGA, CTGF |
| 2013 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CEUA |
| 2014 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CEUA |
| 2013 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CEUA |
| 2014 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CEUA |
| 2014 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CEUA |
| 2013 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CEUA |