INFINITI Q45 License Plate Bulb Size

The INFINITI Q45 uses a 168 bulb for the license plate lighting component located at the rear of the vehicle. Available information covers the span of time from 1990 through 2006.

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
1990-2006	168

Bulb Specifications

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

Other Locations

Additional Notes

The INFINITI Q45 uses the 168 bulb size for the license plate position across all model years from 1990-2006.
The 168 bulb is classified as a miniature wedge type, designated T10, which refers to its wedge-base form factor that allows direct insertion into a compatible socket without a separate metal base or pins.
The 168 bulb operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of illumination bulbs used in non-lighting-critical positions such as license plate housings.
The 168 follows ANSI standards recognized in both the United States and Canada, meaning the specification conforms to a defined set of electrical and physical parameters shared across compliant bulbs from different manufacturers.
The T10 wedge base format is shared among several bulb types in the same family, including the 194 and 192, which carry different wattage ratings. Substituting a higher-wattage T10 variant into a socket rated for the 168 risks exceeding the thermal tolerance of the housing.
Because the 168 rating is consistent across the entire 1990-2006 production span of the INFINITI Q45, replacement bulbs sourced for any year within that range are interchangeable with one another for the license plate position.