Buick Regal TourX Fog Light Bulb Size

The Buick Regal TourX fog light utilizes an H8 bulb size for illumination across all recorded vehicle configurations. Data for the specified lighting component covers the period from 2018 through 2020.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Fog Light

Years	Bulb Size
2020	H8
2018-2019	H8
2018-2019	H8 (For Vehicle With Halogen Headlight)

Bulb Specifications

Description	Bulb Size
ECE standard (Europe & worldwide). Single-filament halogen bulb with PGJ19-1 base. Also approved in the US. 12V, 35W.	H8

Other Locations

Additional Notes

The H8 is the sole front fog light bulb type listed across all model years of the Buick Regal TourX covered in these specifications, spanning 2018-2020.
The H8 is a single-filament halogen bulb operating at 12 volts and 35 watts, which places it in the lower wattage range typical of fog light applications.
H8 bulbs use a PGJ19-1 base, a bayonet-style connector specific to the H8 and a small number of related halogen types. This base type is not universally interchangeable with other common automotive halogen bases.
The H8 standard originates from ECE regulations governing European and worldwide markets, though it also carries approval for use in the United States.
For the 2018 and 2019 Buick Regal TourX, the specifications carry a separate fitment note designating H8 specifically for vehicles equipped with halogen headlights, indicating that headlight technology is a relevant variable in front fog light bulb fitment for those years.
The 2020 model year listing carries no conditional headlight-type qualifier, listing H8 as a single entry without a halogen headlight designation.