2005-2008 Audi S4 Ignition Switch / Trunk Lock Cylinder w/ Key 4B0905851M
OEM Part #: 4B0-905-851-M (4B0905851M)
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 Ignition Switch w/ Key / Cylinder that may fit your vehicle
- Genuine OEM — real photos
- 30-day returns on eligible parts
- eBay Top Rated · 100,000+ positive ratings
- Ships from our own indoor warehouse
Specifications
| Fits Vehicle Model | S4 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4B0-905-851-M (4B0905851M) |
| Category | Steering Wheel / Parts |
Compatible Vehicles
Fits 4 vehicle configurations across 1 make, 2005-2008.
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 4 vehicle configurations — 4 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2005 | Audi | S4 | Sedan | 4.2L V8 | For Automatic Transmission |
| 2006 | Audi | S4 | Sedan | 4.2L V8 | For Automatic Transmission |
| 2007 | Audi | S4 | Sedan | 4.2L V8 | For Automatic Transmission |
| 2008 | Audi | S4 | Sedan | 4.2L V8 | For Automatic Transmission |