Looks like it didn't.
1. Go to
http://www.tousleyfordparts.com/
2. Select your Year
3. Select you Make (Ford)
4. Select your Model (Focus)
5. Once the next page loads with a list of items on the left, select "Front lamps"
6. Select "Headlamp components" once that selection expands.
7. Select "Socket"
8. Select "Signal Lamp Bulb"
Doesn't give you the part number, but that's how you can order a new one.