Buick Enclave License Plate Bulb Size

The Buick Enclave license plate light uses 168 and 12961 bulb sizes for the exterior illumination of the rear registration area. Data for the specific components covers the range from 2008 through 2024.

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
2023-2024	12961
2008-2020	168

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The Buick Enclave license plate bulb specifications cover model years 2008 through 2024, with two distinct bulb types used across that span.
The 168 bulb is the more widely used of the two types, fitting the Enclave across 2008-2020.
The 168 is an ANSI-standardized miniature wedge bulb rated at 12V and 4.9W, with the T10 wedge form factor common to many low-wattage automotive lighting positions.
The 12961 bulb applies to the 2023-2024 Buick Enclave license plate position.
The 12961 is a Philips part number designation for a T10 miniature wedge bulb rated at 12V and 5W, using a W2.1x9.5d base, which is the standard wedge base type for T10 bulbs.
Although both the 168 and 12961 share the T10 wedge form factor, they are listed under separate part numbers and are not presented as interchangeable across all model years in these specifications.
The wattage difference between the two bulbs is marginal, with the 168 rated at 4.9W and the 12961 at 5W, both operating on a 12V automotive circuit.
The W2.1x9.5d base designation on the 12961 describes a wedge base with a 2.1mm wire width and a 9.5mm insertion depth, which is the standard physical interface for T10 wedge bulbs in automotive sockets.