If your bow looks like this this mount will fit.
If you have a question concerning the graphs you want to mount, call the shop and ask - 706-217-6161
NOTE: This mount is made to mount of top of your factory Bow Plate. The screw holes will NOT match up to the holes in your Factory Plate. The reason is that does not have a set place for where they drill Holes to mount the plate at the factory. They just choose where ever they want to put their holes.
Disclaimer: Nitro Boats are now using 2 different height plates on the bow of the Z18, Z19, Z20, Z21. To be sure we send the correct size, please choose the height of your current plastic plate. It will be one of these 2 measurements, measure up and down in about the middle of your plate .