This is a common fuel tank sensor on Hunters built from the late 90s to the early 2000s. The existing sensors were not always the proper depth so please measure the height of your tank. The depth setting is adjustable: order item 196904 if the tank height is 12 inches or less. Order item 196905 if the tank height is 12 to 24 inches. The sensor comes complete with a 5 hole gasket and screws.
Please check to make sure the part you're replacing looks like the one in the photo. There may be small differences due to manufacturer upgrades and redesigns.