I have a 1990’s 126 from Poland.
The Momo boss catalogue lists the boss for a Fiat 126 as number MK4014.
I’ve sourced this boss and it doesn’t fit !
I’ve noticed there appear to be 2 types of spline on 126’s, a coarse & a fine - the difference is obvious in photos.
My car has the fine splines as does the boss but the splines don’t line up - and none of the splines appear damaged.
Could it be the Polish cars used different columns?
Any ideas anyone?