Vespa ET4 Brake Bulb Size
The Vespa ET4 brake bulb uses a P21/5W size bulb for the brake light assembly. The replacement chart covers vehicle production spanning 2001 to 2005.
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 |
|---|---|
| 2001-2005 | P21/5W |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W. | P21/5W |