Beware of non-titanium heaters (Watkins knock-off heaters). Titanium makes the heater 10 times more resisent to heat and water, prolinging the life of your heater element.
The Watkins part number of this heater is 73790. Used on all 1995 to Current, 110 volt (heater runs at 1.5kw) and 220 Volt (heater run