Anode rods preserve the life of a water heater by corroding themselves so the water heater doesn't.
Simply replace the 1/2" or 3/4" pipe thread head drain plug with the anode rod to protect the tank. These anode rods are custructed of either magnesium or aluminum. Use Magnesium rods for Atwood and the Aluminum rods for Suburban & Mor-Flo water heaters.
Installation and service of gas appliances must be performed by a qualified RV service technician.
Aluminum Anode Rod