INFINITI QX50 License Plate Bulb Size

The INFINITI QX50 license plate requires a bulb size of 168 for the rear lighting assembly. Data for the specified vehicle covers the range from 2014 to 2017.

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
2014-2017	168

Bulb Specifications

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

Other Locations

Additional Notes

The 168 bulb is the specified license plate bulb size for the INFINITI QX50 across the 2014-2017 model years.
The 168 bulb follows the ANSI standard, which is the recognized specification body for miniature automotive bulbs in the United States and Canada.
This bulb uses a T10 miniature wedge base, a baseless design where the glass envelope itself is pinched into a wedge shape that locks directly into the socket without a separate metal base.
The 168 operates at 12 volts, which is consistent with standard 12-volt automotive electrical systems.
At 4.9 watts, the 168 draws relatively low power, a characteristic typical of small license plate and courtesy lighting applications.
The T10 wedge format is widely shared across many vehicle makes and lighting positions, though fitment into a specific socket depends on the physical housing design of each vehicle.
Because the 168 and several other T10-based bulbs share the same wedge base, substitution between them is sometimes attempted, but voltage and wattage ratings should be matched to the original specification to avoid electrical or thermal issues.