There are different ones for different type motors. That one looks like it is a good bit longer than the one on my Terrova. The tradional cable drive motors have a bigger base than the electric steer. If I was to guess, I would think it was for one of them, but should be able to get a part number off the mount and then you can look it up.
That is a good price, no matter which one it fits.
SeaRay