Smart Fortwo Turn Signal Bulb Size
The Smart Fortwo turn signal requires a PY21W bulb size for the lighting components located on the exterior of the vehicle. Data for the specific bulb requirements covers the range from 2017 to 2018.
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 |
|---|---|---|---|
| 2016-2018 | 7507 | PY21W | Check Price |
| 2008-2015 | 1157NA | P21/5W | 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 |
|---|---|---|---|
| 2016-2018 | 7507 | PY21W | Check Price |
| 2008-2015 | 7528 | 7528 | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W. | PY21W | 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 |