Saturn Ion Daytime Running Light Bulb Size
The Saturn Ion daytime running light utilizes a 4157NA bulb size for the lighting component located at the front of the vehicle. Available data for the specified bulb covers the period from 2003 through 2007.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Bulb Size by Year Range
| Years | Bulb Size |
|---|---|
| 2003-2007 | 4157NA |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W. | 4157NA |