Audi A8/S8 Upper Power Steering Reservoir / Tank 4H0422373B
OEM Part #: 4H0-422-373-B (4H0422373B)
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The Upper Power Steering Reservoir / Tank (OEM Part Number: 4H0422373B) is a critical component located at the top of the power steering system within various Audi models, including the A8 Quattro and S8 from 2011 to 2016. This reservoir stores hydraulic fluid essential for the smooth operation of the power steering system, allowing for precise steering control and responsiveness. Common problems that may necessitate its replacement include fluid leaks, cracks, or blockages, which can result in steering difficulties. It's also known as the power steering container. This part is compatible with 4.0L and 6.3L V8 engines in models like the 2014 Audi A8 Quattro and 2015 Audi S8. Other compatible part numbers include 4H0422376 and 4H1422891AP.
Specifications
| Fits Vehicle Model | A8, S8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4H0-422-373-B (4H0422373B) |
| Category | Steering |
Compatible Vehicles
Fits 24 vehicle configurations across 1 make, 2011-2018.
View all 24 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2011 | Audi | A8 | Quattro Sedan | 4.2L V8 | |
| 2011 | Audi | A8 | Quattro L Sedan | 4.2L V8 | |
| 2012 | Audi | A8 | Quattro Sedan | 4.2L V8 | |
| 2012 | Audi | A8 | Quattro L Sedan | 4.2L V8 | |
| 2012 | Audi | A8 | Quattro L Sedan | 6.3L W12 | |
| 2013 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | |
| 2013 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2013 | Audi | A8 | Quattro L Sedan | 6.3L W12 | |
| 2013 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | A8 | Quattro L Sedan | 6.3L W12 | |
| 2014 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2015 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | |
| 2015 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2015 | Audi | A8 | Quattro L Sedan | 6.3L W12 | |
| 2015 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2016 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2016 | Audi | A8 | Quattro L Sedan | 6.3L W12 | |
| 2016 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2017 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2017 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2018 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2018 | Audi | S8 | Sedan | 4.0L V8 Turbo |