BMW 428i Brake Bulb Size
The BMW 428i brake light requires a H21W bulb size for proper installation and function within the lighting assembly. Data for the specified component covers the range from 2014 to 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 |
|---|---|
| 2014-2016 | H21W |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BAY9s base. 12V, 21W. | H21W |