Toyota Prius Interior Door Bulb Size

The Toyota Prius interior door component utilizes 168 and 12961 bulb sizes according to the provided technical specifications for the lighting system. Data for the specified vehicle covers the range from 2010 through 2022.

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
2022	12961
2010-2019	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 bulb size 168 is an ANSI-standardized miniature wedge type with a T10 form factor, rated at 12V and 4.9W, and it covers the Toyota Prius interior door application across the 2010-2019 model years.
The bulb size 12961 is a Philips part number rather than an ANSI designation, which means it is a manufacturer-specific reference rather than an industry-wide standard code.
Both the 168 and the 12961 share the T10 wedge form factor, though the 12961 specifies a W2.1x9.5d base designation, which is the IEC standard description for the same wedge base type.
The 12961 is rated at 5W, while the 168 is rated at 4.9W, placing both within the same low-wattage range typical of interior courtesy lighting.
The 2022 Toyota Prius interior door position uses the 12961 rather than the 168, representing a change from the bulb type used in prior model years covered by these specifications.
Because the 12961 carries a Philips-specific part number, direct substitution with the ANSI 168 should be approached with caution, even though both share the T10 wedge form factor, as base tolerances and wattage differ slightly between the two.