For the 2014 Ford Taurus, headlight bulb fitment depends on the headlight type. Models with halogen headlights use a 9012 bulb for both the low beam and high beam. Models equipped with HID headlights use a D3S bulb for both functions. Confirm the headlight configuration before ordering, since 9012 and D3S bulbs are not interchangeable.
The front turn signals and parking lights use 3457A bulbs, while the front side markers use 168NA. Reverse lights take 921 bulbs. The brake lights, center stop light, tail lights, rear turn signals, and rear side markers are listed as LED, so no replaceable bulb size is provided for those positions. License plate lighting uses a 6418 bulb. Interior dome and map lights may use either 2825 or 98 bulbs, depending on the specific lamp setup. No fog-light bulb fitment is listed in the supplied data.