Toyota Prius License Plate Bulb Size

The Toyota Prius license plate light requires bulb size 12961 or 168 depending on the specific version of the vehicle. Available data for the bulb covers the range from 2001 to 2015.

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
2010-2015	12961
2001-2009	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 Toyota Prius uses two distinct license plate bulb sizes across its model years: the 12961 for 2010-2015 and the 168 for 2001-2009.
Both the 12961 and 168 share the same T10 miniature wedge form factor and operate on a 12V electrical system, placing them in the same broad bulb family.
The 12961 is a Philips part number designation and carries a W2.1x9.5d base specification, which defines the physical base contact configuration of the bulb.
The 168 is designated under the ANSI standard used in the United States and Canada, making it a widely available bulb type across the North American market.
The 12961 is rated at 5W, while the 168 is rated at 4.9W, a difference of 0.1W that reflects a minor variation in power draw between the two bulb types.
Despite their shared T10 wedge shape, the differing base and part number designations of the 12961 and 168 indicate that fitment compatibility between the two should not be assumed without verifying base specifications.