Buick Regal Stepwell Bulb Size
The Buick Regal stepwell uses bulb size 6411 and bulb size PC74 for the interior lighting components. Data for the specific bulbs covers the range from 1997 through 2016.
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 |
|---|---|
| 2011-2016 | 6411 |
| 1997-2000 | PC74 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W. | 6411 |
| ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V, 1.4W. | PC74 |