Mercedes-Benz GLS450 Brake Bulb Size
The Mercedes-Benz GLS450 brake bulb uses a P21W size for replacement applications. The replacement chart covers vehicle production spanning 2017 to 2019.
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 |
|---|---|
| 2017-2019 | P21W |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W |