Audi S4 Back Up Light Bulb Size
The Audi S4 back up light bulb uses 2 distinct sizes: 921 and 7506, with each bulb size corresponding to specific vehicle production years. The replacement chart covers the 1992 to 2024 model year range for this component.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Bulb Size by Year Range
If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 2023-2024 | 921 | W16W | Check Price |
| 2020-2021 | 921 | W16W | Check Price |
| 2009-2016 | 921 | W16W | Check Price |
| 2007-2008 | 7506 | 7506 | Check Price |
| 2000 | 7506 | 7506 | Check Price |
| 1992-1994 | 7506 | 7506 | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W. | 921 | Check Price |