Mercedes-Benz C320 Turn Signal Bulb Size
The Mercedes-Benz C320 front turn signal requires 1156NA or 2357NA bulb sizes, while the rear turn signal uses PY21W or 12496 bulb sizes. The replacement chart covers 2001 to 2005 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.
Front Turn Signal
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 2003-2005 | 2357NA (With HID Headlamps) | P21/5W | Check Price |
| 1156NA (With Halogen Capsule Headlamps) | PY21W | Check Price | |
| 2001-2002 | 1156NA | PY21W | Check Price |
Rear 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 |
|---|---|---|---|
| 2004-2005 | 7507 | PY21W | Check Price |
| 2002-2003 | 12496 | 12496 | Check Price |
| 2001 | 7507 | PY21W | 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 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base, natural amber glass. 12V, 21W. | 1156NA | Check Price |
| ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W. | PY21W | Check Price |
| Philips/Osram part number. Halogen bulb, specialty application. 12V. | 12496 | Check Price |