BMW 528i Stepwell Bulb Size
The BMW 528i stepwell light uses 12961 and DE3423 bulb sizes depending on the specific production period for the vehicle. Available data covers a span of time starting 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 | 12961 |
| 2008-2010 | DE3423 |
| 1997-2000 | DE3423 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W. | 12961 |
| ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V. | DE3423 |