For the 2017 Infiniti Q50, the listed low-beam and high-beam headlights use LED lighting. The fog lights, daytime running lights, parking lights, front side markers, and rear side markers are also listed as LED. No replaceable halogen bulb size is provided for these exterior lighting functions, so confirm the vehicle’s original equipment before ordering a replacement.
The rear turn signals use 7440A bulbs. License plate lighting is listed with either 168 or 917 bulbs, while the interior lighting may use 168 or 917 for the interior and dome-light applications. The map light, brake lights, center stop light, reverse lights, and tail lights are listed as LED.
For the trunk, the listed bulb size is 158. Because the supplied fitment data does not identify separate headlight-type or trim-specific variations, verify the existing bulb or lamp assembly when servicing the Q50.