Similar threads seem to be making the "rounds" on other Fiesta sites, and I suspect Ford has added to the confusion by showing an FL number that we cannot get in the States. I double checked with my parts guy at my dealer and he confirmed the FL910S is the correct number for our cars. He had a theory that since our engines are sourced from the UK, then the FL2057 is a European fitment for the car. Maybe one of our UK members can confirm this?