For the 2001 Ford F-250, both the low-beam and high-beam headlights use a 9007 bulb. The supplied fitment data does not identify a projector or non-projector headlight distinction, so no headlight-type variation is listed here.
The fog lights use 9145 LED bulbs. Front turn signals, parking lights, brake lights, tail lights, and rear turn signals use 3157 bulbs. The front side markers use 194 bulbs, while the reverse lights use 3156. License plate and courtesy lights use 168 bulbs.
- Dome light: 578 or 912
- Engine light: 912
- Glove box light: 161
- Trunk light: 906
- Instrument lighting: PC194
- Indicator and warning lamps: PC74
Verify the existing bulb and socket before ordering, especially for interior applications where multiple listed sizes may apply.