BMW Alpina B7 Brake Bulb Size
The BMW Alpina B7 brake light requires H21W and P21W bulb sizes for the specific lighting components located at the rear of the vehicle. Data for the specified lighting requirements covers the period from 2007 through 2015.
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 |
|---|---|
| 2011-2015 | H21W (Adaptive) |
| 2007-2008 | P21W |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BAY9s base. 12V, 21W. | H21W |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W |