For the 2015 Nissan Xterra, both the low-beam and high-beam headlights use a 9007 bulb. The same bulb serves both functions, so confirm the existing bulb and connector before ordering replacements.
Fog-light fitment is listed with two options: H11 LED and H16 LED. Check which fog-light configuration is installed on your Xterra, as these are separate fitment options. The front turn signal and parking light use 3457A, while the front side marker uses 194NA.
For the rear lighting, the brake and tail lights use 3157R, the rear turn signal uses 3156A, and the rear side marker uses 3157A. The reverse light uses 921, and the center stop light is listed as LED.
Interior listings include DE3175 for the dome, map, and trunk lights. License plate fitment is listed as 168 or 917, so check the installed socket before purchase.