Originally Posted by bigdesignmachine
You are correct.
Found this on their site after altering my search.
Ford Focus ST225 M66 Quaife ATB Helical LSD differential
The ST225 isnt the 2013 ST though if I am not mistaken so this differential is not made for the new ST
That sounds like it was for the MK2 Focus ST which used a volvo engine and gearbox, the 2013 Focus ST uses the MMT6 gearbox, not an M66, so it wouldn't likely work at all.
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