What is this part (from gas tank)

[CDW6212R]

Try this site to check on Ford prices, they list most Ford parts. It's good to see first what the parts will cost, generally the lowest price available. I use it to double check pricing form dealers and Torrie there.
http://www.directfordparts.com/partlocator/index.cfm?siteid=214290

 

[Cobraguy]

I'm having trouble finding an aftermarket alternative. But don't be surprised if this sensor spreads across different lines. Pick-ups...Broncos...cars...these may use the same sensor.