For the 2012 Nissan Altima, the high-beam headlight uses an H9 bulb. Low-beam fitment depends on the headlight assembly: vehicles with halogen headlights use H11, while those with HID headlights use D2S. Confirm the headlight type before ordering.
Listed fog-light options are H11 LED and H16 LED. Front turn signals and parking lights use 7444NA; the 3457A option applies to Sedan models. Front side-marker fitment also varies: Coupes use 2825 or 98, while Sedans use 2827. Rear lighting includes 3157R for the brake and tail lights, 3156 for the rear turn signal, and 921 for reverse lights.
The center stop light may use 921 or an LED assembly, so compare it with the original. License-plate lights are listed as 168 or 917. Interior courtesy, dome, map, and general interior lights use 194 or 7441; the trunk light uses 158.