Cadillac STS Turn Signal Bulb Size
The Cadillac STS front turn signal requires a 3757NA bulb size for replacement operations. The chart documents bulb specifications across 2005 to 2011 production years.
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 |
|---|---|---|---|
| 2010-2011 | 3757NA | PY27/7W | Check Price |
| 2005 | 3757NA | PY27/7W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V. | 3757NA | Check Price |