This light has an Exposed Shaft of 10 1/2" and a Center to Center of 16"
You will also need a 189 installation kit for driver side mount on a 2016 Ford Fusion.
Exposed shaft – the amount of tubing visible between the head housing and handle housing when the spotlight is assembled.
Center to center – the distance between where the gears mesh in the handle and where the gears mesh in the head when the spotlight is assembled.