Mercedes-Benz C300 Turn Signal Bulb Size
The Mercedes-Benz C300 front turn signal requires bulb sizes 12174NA, PY24WNA, or 3457NA, while the rear turn signal uses 12496 or PY21W bulb sizes. The replacement chart covers 2008 to 2019 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
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 |
|---|---|---|---|
| 2015-2019 | 12174NA (With Halogen Capsule Headlamps) | 12174NA | Check Price |
| 2011-2014 | PY24WNA (With Halogen Capsule Headlamps) | PY24W | Check Price |
| 2009-2010 | 3457NA | PY27/7W | Check Price |
| 2008 | 3357NA | 3357NA | 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 |
|---|---|---|---|
| 2019 | 12496 (With Halogen Capsule Headlamps) | 12496 | Check Price |
| 2018 | 7507 (With Halogen Capsule Headlamps) | PY21W | Check Price |
| 2016-2017 | 12496 (With Halogen Capsule Headlamps) | 12496 | Check Price |
| 2015 | 7507 (With Halogen Capsule Headlamps) | PY21W | Check Price |
| 2010-2011 | 7507 | PY21W | Check Price |
| 2009 | 12496 | 12496 | Check Price |
| 2008 | 7507 | PY21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| OEM part number. Natural amber glass variant. 12V. | 12174NA | Check Price |
| ANSI standard (US & Canada). Amber variant of ECE PY24W with PGU20-4 base. 12V, 24W. | PY24WNA | Check Price |
| ECE standard (Europe & worldwide). Single-filament amber bulb with PGU20-4 base. 12V, 24W. | PY24W | Check Price |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W. | 3457NA | Check Price |
| ANSI standard (US & Canada). Single-filament wedge bulb (T25), natural amber glass. 12V, 27W. | 3357NA | 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 |