Audi A4/A5/S4/S5 Power Steering Rack / Gear Motor 8W1423055BC
OEM Part #: 8W1-423-055-BC (8W1423055BC)
This page covers one exact OEM part number. Every unit we stocked has sold.
We may be able to get another
Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:
Other Power Steering Gear / Rack that may fit your vehicle
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The OEM Power Steering Rack / Gear Motor (Part Number: 8W1423055BA) is an essential component for maintaining accurate steering response in various Audi models, including the A5, A5 Sportback, S4, S5 Sportback from 2024 and 2025, as well as A5 Quattro and S5 models from 2017 through 2025. This motor assembly directly influences the vehicle's steering feel and precision, enhancing overall driving performance. Common issues such as diminished steering responsiveness or intermittent failure can arise from a worn or damaged motor. This power steering gear motor ensures proper assistance, allowing for smoother maneuvers. Alternative part number 8W1423055BC is also compatible, providing additional options for replacements. Sourced as an authentic OEM part from donor vehicles, it guarantees a factory-original fit for dependable operation in the power steering system.
Specifications
| Fits Vehicle Model | A4, A5, S4, S5 |
| Fits Vehicle Make | Audi |
| OEM Part No | 8W1-423-055-BC (8W1423055BC) |
| Compatible OEM Part No | 8W1-423-055-BA |
| Category | Steering |
Compatible Vehicles
Fits 25 vehicle configurations across 1 make, 2017-2025.
View all 25 vehicle configurations — 9 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2017 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2017 | Audi | S5 | Convertible | 3.0L V6 Supercharged | |
| 2018 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2018 | Audi | S5 | Convertible | 3.0L V6 Turbo | |
| 2019 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2019 | Audi | S5 | Convertible | 3.0L V6 Turbo | |
| 2020 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2020 | Audi | S5 | Convertible | 3.0L V6 Turbo | |
| 2021 | Audi | S5 | Convertible | 3.0L V6 Turbo | |
| 2022 | Audi | S5 | Convertible | 3.0L V6 Turbo | |
| 2021 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2022 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2023 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2023 | Audi | S5 | Convertible | 3.0L V6 Turbo | |
| 2024 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Vehicles with Production Date Between 09/02/24 and 12/23/24 |
| 2024 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2024 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Vehicles with Production Date Between 09/02/24 and 12/23/24 |
| 2024 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Vehicles with Production Date Between 09/02/24 and 12/23/24 |
| 2024 | Audi | S4 | Sedan | 3.0L V6 Turbo | For Vehicles with Production Date Between 09/02/24 and 12/23/24 |
| 2024 | Audi | S5 | Convertible | 3.0L V6 Turbo | |
| 2024 | Audi | S5 | Coupe | 3.0L V6 Turbo | For Vehicles with Production Date Between 09/02/24 and 12/23/24 |
| 2024 | Audi | S5 | Hatchback | 3.0L V6 Turbo | For Vehicles with Production Date Between 09/02/24 and 12/23/24 |
| 2025 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Vehicles with Production Date Between 09/02/24 and 12/23/24 |
| 2025 | Audi | S4 | Sedan | 3.0L V6 Turbo | standard steering from 12/11/2023 |
| 2025 | Audi | S5 | Hatchback | 3.0L V6 Turbo | For Vehicles with Production Date Between 09/02/24 and 12/23/24 |