The INFINITI QX80 tail light requires a 12961 bulb size for proper installation and function. Data for 12961 bulbs covers the range from 2014 through 2017.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The INFINITI QX80 inner tail light uses two bulb types across its model years: the 168 and the 12961, both of which are T10 miniature wedge bulbs operating at 12 volts.
The 168 is an ANSI-standardized bulb used in the United States and Canada, rated at 4.9 watts with a T10 wedge form factor.
The 12961 is a Philips part number designation for a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 5 watts.
The W2.1x9.5d base specification on the 12961 describes a wedge-type base where 2.1 refers to the wire contact width in millimeters and 9.5 refers to the base length in millimeters, which is the standard T10 wedge base geometry.
Although both the 168 and 12961 share the T10 wedge form factor and 12-volt operating voltage, their wattage ratings differ slightly at 4.9W and 5W respectively, and they carry separate part number designations.
The 168 bulb is specified for the INFINITI QX80 inner tail light across the 2014-2018 model years.
The 12961 bulb is specified for the 2014-2017 model years of the inner tail light position.
The 2018 model year lists only the 168 bulb for the inner tail light, while the 2014-2017 model years list both the 168 and the 12961 as applicable bulbs for that position.