If your Dash looks like this one, this mount plate will fit.
This mount fits the Ranger 522D.
If you have smaller units that are not listed in the drop down menu for GPS/Sonar, then go to 522D Boat Dual Mounts
Note: If your Boat does not have tilt wheel, then you will need a 1-1/2" steering spacer. These are available in the Other Custom Accessories section.