Toyota Echo License Plate Bulb Size

The Toyota Echo license plate light requires 12961 and 168 bulb sizes for the rear exterior illumination system. Data for the specified components covers the period from 2000 through 2005.

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
2003-2005	12961
2000-2002	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 Echo uses two distinct bulb types across its production run for the license plate position: the 12961 and the 168, both of which share the T10 miniature wedge form factor.
The 12961 is a Philips part number designation for a T10 miniature wedge bulb rated at 12V and 5W, fitted with a W2.1x9.5d base.
The 168 is an ANSI-standardized designation recognized across the US and Canadian markets, also a T10 miniature wedge bulb, rated at 12V and 4.9W.
The Toyota Echo (2003-2005) uses the 12961 bulb for the license plate position, while the 2000-2002 model years use the 168.
Although both bulbs share the T10 wedge form factor, the 12961 carries a W2.1x9.5d base specification and a marginally higher wattage of 5W compared to the 168's 4.9W rating.
The W2.1x9.5d base designation on the 12961 refers to a wedge-type base with a 2.1mm wire contact width and a 9.5mm insertion depth, which is a standard metric used in European and international bulb classifications.
The 168 and 12961 are both T10 wedge types, but the difference in base specification and wattage rating means they are not confirmed as interchangeable across the two production periods represented in these specifications.