Your RV water heater tank is constantly exposed to corrosive minerals in the water supply. This magnesium anode rod sacrifices itself to protect the steel tank lining from galvanic corrosion, extending the service life of your Atwood water heater. Replacing a worn-out anode rod is one of the cheapest, fastest preventive maintenance steps an RV owner can take -- and one of the most overlooked.
Galvanic corrosion occurs when dissimilar metals interact through a conductive liquid. Inside your Atwood water heater, that liquid is your fresh water supply -- loaded with minerals, salts, and dissolved oxygen that attack the steel tank from the inside out. The magnesium anode rod (also called a sacrificial anode) is engineered to corrode first, drawing those corrosive elements away from the tank walls and heating element.
Camco part 11593 (SKU 09-0149) is sized specifically for Atwood 10-gallon water heater tanks. At 9.5 inches long and 0.6 inches in diameter with a standard 1/2-inch thread, it threads directly into the drain plug port -- no adapters required for compatible Atwood units.
Pure magnesium construction corrodes preferentially, shielding your tank lining and anode fitting from galvanic attack.
Designed for Atwood 10-gallon RV water heaters. Threads into the existing drain plug opening with no modification.
1/2" NPT thread installs with a standard socket wrench -- a straightforward DIY task requiring no special tools.
Backed by Camco's limited 1-year warranty. Camco is the leading supplier of RV maintenance accessories in North America.
An anode rod that has been depleted past 50% of its original mass provides dramatically reduced protection. Once the magnesium core is gone, the tank itself becomes the sacrificial element -- leading to rust, sediment buildup, leaks, and ultimately a failed water heater. Atwood water heater tanks are steel-lined, making anode rod maintenance especially important compared to glass-lined alternatives.
Camco recommends inspecting your anode rod at least monthly and replacing it when less than half of the rod remains. In areas with particularly hard or aggressive water, the rod may deplete faster -- plan for more frequent checks if you notice rusty water, a sulfur odor, or sediment in your hot water supply.