Repair your water heater rather than replace it with the Rheem PROTECH Electric Water Heater Tune-Up Kit. This OEM quality Electric Water Heater Tune-Up Kit provides a quick and easy way to repair the most common items on an electric water heater. The tune up kit helps prolong the life of your water heater by renewing the key electrical components of your water heater. The kit includes two 4,500-watt, 240-volt water heater High Watt Density 1" screw-in elements with gaskets, one Therm-O-Disk 240-volt lower thermostats and one Therm-O-Disc upper thermostat. This kit is for units that have 1" screw in water heater elements. They will not fit Rheem Marathon or Eclipse water heaters.