Audi A8 Back Up Light Bulb Size
The Audi A8 back up light bulb size specifications include 12177, 12184, and 921 bulb configurations for this vehicle model. The replacement chart covers 1997 through 2013 production years with corresponding bulb size data.
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 |
|---|---|---|---|
| 2011-2013 | 12177 | 12177 | Check Price |
| 2009-2010 | 12184 | 12184 | Check Price |
| 2004-2008 | 921 | W16W | Check Price |
| 1997-2003 | 1156 | P21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| Philips part number. Halogen bulb, specialty application. 12V. | 12177 | Check Price |
| Philips part number. Halogen bulb, specialty application. 12V. | 12184 | Check Price |
| ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W. | 921 | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1156 | Check Price |