The INFINITI Q60 front turn signal requires a 7440NA bulb size while the rear turn signal uses a 7440 bulb size. The replacement chart covers 2014 to 2015 model years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The INFINITI Q60 uses the T20 wedge bulb format for both its front and rear turn signals across the 2014-2015 model years.
The T20 designation refers to a single-filament wedge-base bulb, meaning it operates on one filament and uses a wedge-style base rather than a bayonet or pin connector.
Both the 7440NA and 7440 types share identical electrical ratings of 12 volts and 21 watts, and both conform to ANSI standards applicable in the United States and Canada.
The front turn signal position on the 2014-2015 Q60 takes the 7440NA bulb, while the rear turn signal position takes the 7440 bulb.
The 7440NA and 7440 are not interchangeable by position on this vehicle, as the front and rear housings are each specified for a distinct variant of the T20 bulb.
The distinguishing characteristic of the 7440NA is its natural amber glass envelope, which filters the light output to produce an amber color without relying solely on the lens housing for color.
The 7440, by contrast, has a clear glass envelope, so the amber color of the turn signal is produced by the lens or reflector housing rather than the bulb itself.
Because both bulb types share the same T20 wedge base and the same 12V, 21W electrical specification, physical installation is mechanically compatible across both positions, making the positional distinction a matter of optical output rather than socket fitment.