For the 2003 Nissan Maxima, the high-beam headlight uses a 9005 bulb. Low-beam fitment depends on the headlight assembly: models with halogen headlights use H1, while models with HID headlights use D2R. Confirm the headlight type before ordering, since these low-beam bulbs are not interchangeable.
Fog light fitment is listed as H3 or H3C. The front and rear turn signals use 7440 bulbs, while the brake and tail lights use the red 7443R. The center stop light also uses a 7440.
Other notable fitments include 921 reverse lights, 194NA front and rear side markers, and 168 or 917 bulbs for the parking and license plate lights. Interior lighting includes a 161 courtesy bulb, DE3175 dome bulb, and 158 trunk bulb. Instrument-panel fitment is listed as 2721 or 2723; compare both options with the original bulb before purchasing.