Audi A4 Back Up Light Bulb Size
The Audi A4 back up light bulb uses 921 and 7506 sizes depending on the vehicle production year. The replacement chart covers 1996 to 2020 model years with corresponding bulb size specifications.
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 |
|---|---|---|---|
| 2009-2020 | 921 | W16W | Check Price |
| 2007-2008 | 7506 | 7506 | Check Price |
| 1999-2002 | 7506 | 7506 | Check Price |
| 1996-1997 | 7506 | 7506 | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W. | 921 | Check Price |