Mercedes-Benz GL550 Brake Bulb Size
The Mercedes-Benz GL550 utilizes a brake light component requiring a specific P21W bulb size for proper illumination and function. Available data for the specified vehicle covers a span from 2008 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 |
|---|---|
| 2008-2016 | P21W |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W |