Mercedes-Benz CLK550 Turn Signal Bulb Size
The Mercedes-Benz CLK550 front inner turn signal requires 1034NA or 1157NA bulbs, the front outer turn signal uses 12961 bulbs, the front turn signal uses P21W bulbs, and the rear turn signal requires 12496 or PY21W bulbs in these specific sizes. The replacement chart covers 2007 to 2009 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 Inner 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 |
|---|---|---|---|
| 2009 | 1034NA | 1034NA | Check Price |
| 2007-2008 | 1157NA | P21/5W | Check Price |
Front Outer Turn Signal
| Years | Bulb Type | Shop |
|---|---|---|
| 2007-2009 | 12961 | Check Price |
Front Turn Signal
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 2007-2009 | 1156 | P21W | 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 |
|---|---|---|---|
| 2008-2009 | 12496 | 12496 | Check Price |
| 2007 | 7507 | PY21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. Variant of 1157. 12V, 21/5W. | 1034NA | 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). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W. | P21/5W | Check Price |
| Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W. | 12961 | 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 |
| Philips/Osram part number. Halogen bulb, specialty application. 12V. | 12496 | Check Price |
| ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W. | PY21W | Check Price |