Audi A8 Turn Signal Bulb Size
The Audi A8 front inner turn signal requires a 2357NA bulb size, while front turn signals use 12188, 12180, or 1157NA bulbs, rear turn signals use P21W bulbs, and additional turn signal applications use 921 bulbs. The replacement chart covers vehicle production years spanning 1997 through 2014 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.
Front Inner Turn Signal
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 2001-2003 | 2357NA | P21/5W | Check Price |
Front Turn Signal
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 |
|---|---|---|---|
| 2011-2014 | 12188 (With HID Headlamps) | 12188 | Check Price |
| 2009-2010 | 12188 | 12188 | Check Price |
| 2004-2008 | 12180 | 12180 | Check Price |
| 2001-2003 | 1157NA | P21/5W | Check Price |
| 1997-2000 | 2357NA | P21/5W | Check Price |
Rear Turn Signal
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 1997-2003 | 1156 | P21W | Check Price |
Turn Signal
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 2010 | 921 (Silver, From VIN 4E-A-000 001, To VIN 4E-A-020 000) | W16W | Check Price |
| 2004-2009 | 921 (Silver) | W16W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. 12V, 26.9W/8W. | 2357NA | Check Price |
| ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W. | P21/5W | Check Price |
| Philips part number. Halogen bulb, specialty application. 12V. | 12188 | Check Price |
| Philips part number. Halogen bulb, specialty application. 12V. | 12180 | Check Price |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. 12V, 21W/5W. | 1157NA | 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 |
| ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W. | 921 | Check Price |