For the 2017 Buick Enclave, both the low-beam and high-beam headlights use D3S bulbs. The supplied fitment data does not indicate a separate bulb or a projector/non-projector headlight distinction, so verify the original headlamp before ordering.
Other notable exterior lighting includes a 7444NA front turn signal, 921 reverse light, and 7443R brake light. The center stop light and daytime running lights are listed as LED, rather than replaceable bulb sizes.
- License plate and map lighting may use 168 or 917.
- Parking and front side-marker lighting may use 2825 or 98.
- Rear side markers use 194NA, while rear turn signals use 7443.
- Tail-light listings include 194, 7441, and 7443R, so confirm the socket position before replacement.