For the 2016 Ford Flex, headlight bulb fitment depends on the factory headlight type. Models with halogen headlights use an H13 bulb for both the low beam and high beam. Models with HID headlights use a D3S bulb for both functions.
Fog light fitment is listed as either H11 LED or H16 LED. The front turn signal and parking light use 3457A bulbs. Reverse lights use 921 bulbs, while the center stop light uses an LED assembly.
Additional rear lighting varies with the headlight configuration. With halogen headlights, the brake light uses 4157R, the rear turn signal uses 4157, and the side markers use 168NA at the front and 194NA at the rear. HID-equipped models use LED lighting for these listed functions. Tail light listings include 168 and 917 for halogen configurations, LED for HID configurations, and 4157R as an additional listed fitment. The license plate light uses 6418.
Interior fitments include 578 for the dome and trunk lights, 161 for the glove box, and 2825 or 98 for the map lights.