[AlanD]

Ah, I thought that you were asking about a Mondeo rather than the Focus your sig identifies.

The reason for the absence of a respose from the calculator might result from entering a 2011 date into the "year" field. Ford only allow a 7 year history (I think), but I would not expect there to be to much variation from the figures that I provided. You might get a better cost result from a mobile mechanic. As we have seen the job can be done "in vehicle" and you might save some expense by sourcing and supplying the hardware yourself.

Cheers