Buick Regal TourX Tail Light Bulb Size
The Buick Regal TourX tail light uses a PY21W bulb size for the specified model years. The replacement chart covers 2018 to 2019 vehicle production data with corresponding bulb size specifications.
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 |
|---|---|
| 2018-2019 | PY21W (Outer) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W. | PY21W |