For the 2001 Buick Regal, the supplied fitment data lists a 9005 bulb for the high-beam headlight. No low-beam bulb is provided, so confirm the original low-beam bulb before ordering; the available data does not establish a low-beam size or a headlight-type variation.
The fog lights use 893 bulbs. Front turn signals and parking lights use 4157NA, while the front and rear side markers use 194NA. At the rear, the reverse lights use 1156 bulbs, rear turn signals use 3057, and the brake lights use 3057R. The center high-mounted stop light uses 921.
- License plate and tail-light fitment includes 194 and 7441 options, so compare the installed bulb and socket before purchasing.
- Courtesy-light fitment varies: compare the original bulb for 2721, or check for the 168/917 option.
- Interior and auxiliary applications include 906 for the dome light, 168 or 917 for map lights, and 98 for the trunk light.