Toyota 4Runner Interior Door Bulb Size

The Toyota 4Runner interior door bulb accommodates 2 distinct bulb sizes: 168 and 194. The replacement chart covers vehicle production spanning from 2003 to 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
2010-2022	168
2003-2009	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The Toyota 4Runner uses the 168 bulb for the interior door position across the 2010-2022 model years, while the 2003-2009 model years use the 194 bulb instead.
Both the 168 and 194 are ANSI-standardized miniature wedge bulbs sharing the T10 form factor and a 12-volt operating voltage, which places them in the same physical bulb family.
Despite sharing the same T10 wedge base, the 168 and 194 differ in wattage. The 168 draws 4.9 watts, while the 194 draws 3.78 watts, making them electrically distinct from one another.
Because the 168 and 194 share the T10 wedge base, they are physically interchangeable in terms of socket fit, but the wattage difference means they are not electrically equivalent replacements for one another.
The ANSI designation on both bulbs indicates they conform to standardized specifications recognized across the United States and Canada, meaning consistent performance is expected from any compliant unit of either type.
The T10 designation refers to the tubular wedge-base bulb format, where the wedge-shaped base locks directly into the socket without a separate metal base or bayonet pins.