Honda Ridgeline License Plate Bulb Size

The Honda Ridgeline license plate component utilizes 168 and 12961 bulb sizes for illumination purposes. Available information covers a specific time span starting in 2006 and ending in 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
2017-2020	168
2006-2014	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 168 bulb is the most widely used license plate bulb size across Honda Ridgeline model years, appearing in the 2006-2009, 2010-2014, and 2017-2020 model years.
The 168 is an ANSI-standardized bulb recognized in the United States and Canada, rated at 12V and 4.9W, and uses a miniature wedge (T10) form factor.
The 12961 is a Philips part number designation for a miniature wedge bulb also built on the T10 form factor, rated at 12V and 5W, with a W2.1x9.5d base specification.
The W2.1x9.5d base designation on the 12961 describes the physical wedge base geometry, where 2.1 refers to the wire contact width and 9.5 refers to the wedge length in millimeters.
The Honda Ridgeline (2023-2024) uses the 12961 bulb for the license plate position, which differs from the 168 bulb used in earlier model years despite both sharing the T10 form factor.
Although the 168 and 12961 are both T10 wedge bulbs, the 12961 carries a slightly higher wattage at 5W compared to the 168 at 4.9W, and the two are not confirmed as interchangeable by these specifications.