2017-2024 Audi A4/A5 Coolant Hose / Line 8W0121400B
OEM Part #: 8W0-121-400-B (8W0121400B)
Actual photo
The exact part you’ll receive — not a stock photo.
$15.63
Used
Donor2019 Audi A5 · 2.0L · 25k miles
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9 Available — Select Your Part:
Genuine OEM Used
SKU: 514916
Donor Vehicle: 2019 Audi A5 · 2.0L · 25k miles
2 photos
$15.63
30-Day Returns
Genuine OEM Used
SKU: 625402
Donor Vehicle: 2019 Audi A5 SPORTBACK · 2.0L · 61k miles
2 photos
$15.63
30-Day Returns
Genuine OEM Used
SKU: 563097
Donor Vehicle: 2019 Audi A4 · 2.0L · 54k miles
2 photos
$15.63
30-Day Returns
Genuine OEM Used
SKU: 531461
Donor Vehicle: 2019 Audi A5 SPORTBACK · 2.0L · 50k miles
2 photos
$15.63
30-Day Returns
Genuine OEM Used
SKU: 574856
Donor Vehicle: 2019 Audi A5 · 2.0L · 38k miles
2 photos
$15.63
30-Day Returns
Genuine OEM Used
SKU: 591729
Donor Vehicle: 2018 Audi A4 · 2.0L · 50k miles
2 photos
$15.63
30-Day Returns
Genuine OEM Used
SKU: 611043
Donor Vehicle: 2021 Audi A5 SPORTBACK · 2.0L · 50k miles
2 photos
$15.63
30-Day Returns
Genuine OEM Used
SKU: 607080
Donor Vehicle: 2021 Audi A5 · 2.0L · 35k miles
4 photos
$15.63
30-Day Returns
Genuine OEM Used
SKU: 536026
Donor Vehicle: 2022 Audi A4 · 2.0L · 11k miles
2 photos
$15.63
30-Day Returns
- Genuine OEM — real photos
- 30-day returns on eligible parts
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A used OEM Audi coolant hose, part number 8W0121400B, is a genuine coolant line removed from a donor vehicle. Also known as a coolant hose, this 2.0L turbocharged engine component carries antifreeze between the engine and cooling system. When this line cracks or leaks, it can cause low coolant levels and overheating.
Specifications
| Fits Vehicle Model | A4, A5 |
| Fits Vehicle Make | Audi |
| OEM Part No | 8W0-121-400-B (8W0121400B) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 35 vehicle configurations across 1 make, 2017-2024.
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 35 vehicle configurations — 35 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2024 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2024 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2024 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2024 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2020 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2019 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2020 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2019 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2019 | Audi | A4 | Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2019 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2020 | Audi | A4 | Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2020 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2017 | Audi | A4 | Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2018 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2018 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2018 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2018 | Audi | A4 | Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2023 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2022 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2019 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2022 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2023 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2022 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2021 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2022 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2021 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2020 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2023 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2021 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2021 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2023 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |
| 2018 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission; For Vehicles with Production Date After 07/30/18 |