Subaru XT Courtesy Bulb Size
The Subaru XT courtesy light utilizes 158 and DE3175 bulb sizes for the interior lighting system. Data for the specified components covers the period from 1985 through 1991.
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 |
|---|---|
| 1991 | 158 |
| 1985-1990 | DE3175 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |
| ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V. | DE3175 |