For the 2014 Nissan Xterra, both the low-beam and high-beam headlights use a 9007 bulb. The same 9007 fitment serves both headlight functions, so verify the existing bulb and connector before ordering.
Front fog-light applications are listed with two options: H11 LED and H16 LED. Confirm which fog-light bulb your Xterra uses before purchasing, as these are separate fitments. The front turn signal and parking light use 3457A, while the front side marker uses 194NA.
At the rear, the brake and tail lights use 3157R, the rear turn signal uses 3156A, and the rear side marker uses 3157A. Reverse lights use 921. The center stop light is listed as an integrated LED unit. For interior lighting, the dome, map, and trunk lights all use DE3175. License-plate lighting may use either 168 or 917, so check the installed bulb before replacement.