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URO 8W0121405L Engine Coolant Reservoir
| Brand | URO 8W0121405L |
|---|---|
| Fits | Audi · 15 vehicles |
OEM-spec replacement. Meets or exceeds original equipment specifications.
Quality replacement part for the coolant reservoir function.
Cross-references URO 8W0121405L, 8W0 121 405E and 8W0 121 405F for the same application. See all 6.
Engine Coolant Reservoir for Audi A4 and A5
Replace a cracked or leaking coolant expansion tank with this URO engine coolant reservoir, part number 8W0121405L. It is a direct-fit replacement for select 2017-2020 Audi A4, Audi A4 Quattro, Audi A5 Quattro, and Audi A5 Sportback applications.
Key Features
- Engine coolant reservoir for European vehicle cooling systems
- URO Parts replacement component built to meet or exceed OEM specifications
- Direct replacement for part number 8W0121405L
- Cross-references Audi OE numbers 8W0 121 405E and 8W0 121 405F
- Fits 2017-2020 Audi A4 and Audi A4 Quattro, plus 2017-2020 Audi A5 Quattro and 2018-2020 Audi A5 Sportback
Detailed Description
This URO coolant reservoir is made for drivers and technicians servicing modern Audi cooling systems. It supports proper coolant expansion and recovery in the reservoir assembly, helping maintain stable system operation on 2017-2020 Audi A4, Audi A4 Quattro, Audi A5 Quattro, and Audi A5 Sportback models. Part number 8W0121405L is a practical OE-style replacement when the original tank is damaged, aged, or no longer sealing correctly.
This part cross-references Audi OE numbers 8W0 121 405E and 8W0 121 405F for the same application.
What It Helps Fix
- Coolant loss from a cracked reservoir
- Visible coolant seepage around the expansion tank
- Low coolant warnings caused by tank failure
- Heat-related plastic deterioration in the cooling system
- Service issues on Audi A4, Audi A4 Quattro, Audi A5 Quattro, and Audi A5 Sportback models
Installation Notes and Tips
Verify the OE part number and vehicle application before installation. Inspect the reservoir cap, hoses, and surrounding cooling components for wear or contamination while the system is open. After installation, refill and bleed the cooling system according to Audi service procedures to remove trapped air.
Quality Assurance
URO Parts manufactures replacement components for European vehicles that are built to meet or exceed OEM specifications. The brand also offers upgraded URO Premium components for problem-prone OE designs, along with a lifetime warranty on URO Premium products.
| Year | Make | Model | Notes |
|---|---|---|---|
| 2020 | Audi | A4 | — |
| 2020 | Audi | A4 Quattro | — |
| 2020 | Audi | A5 Quattro | — |
| 2020 | Audi | A5 Sportback | — |
| 2019 | Audi | A4 | — |
| 2019 | Audi | A4 Quattro | — |
| 2019 | Audi | A5 Quattro | — |
| 2019 | Audi | A5 Sportback | — |
| 2018 | Audi | A4 | — |
| 2018 | Audi | A4 Quattro | — |
| 2018 | Audi | A5 Quattro | — |
| 2018 | Audi | A5 Sportback | — |
| 2017 | Audi | A4 | — |
| 2017 | Audi | A4 Quattro | — |
| 2017 | Audi | A5 Quattro | — |
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