Ao Smith 100108660 Magnesium Anode Rod 3/4 Inch Hex

Product Description

The AO SMITH 100108660 is a standard magnesium anode rod designed to protect water heater tank interiors from corrosion through electrochemical action. The rod attracts corrosive elements in the water supply, sacrificing itself over time so the tank lining is preserved. At 32 inches in length and 0.84 inches in diameter, this rod fits standard residential tank-style water heaters. The 3/4-inch hex connection provides a direct, wrench-accessible install point at the top or side port of the heater. Licensed plumbers and experienced service techs handle this replacement as routine preventive maintenance.

This anode rod is used in residential tank-style water heaters where the original or previously installed rod has been depleted. Anode rod replacement is a standard service interval task, typically performed every three to five years depending on water chemistry. Hard water and softened water conditions both accelerate rod consumption. This rod is suited for installations where magnesium material is appropriate for the local water supply and heater manufacturer specifications.

Key Features

• Magnesium construction provides active electrochemical corrosion protection for tank interiors
• 32-inch length fits standard residential water heater tank configurations
• 0.84-inch diameter rod body for proper fit in standard anode port openings
• 3/4-inch hex end connection for straightforward socket or wrench installation
• Replacement-grade part suitable for routine preventive maintenance service calls

Compatibility

Designed as an OEM-style replacement anode rod for residential tank-style water heaters equipped with a 3/4-inch hex anode port.

Installation Notes

A licensed plumber or qualified service technician should perform anode rod replacement. Before service, shut off the cold water supply and disconnect power to the heater or set a gas unit to the pilot position, then relieve tank pressure at a relief valve or hot water faucet. A 1-1/16-inch socket and breaker bar or torque wrench is typically required to break the hex fitting loose. Apply thread sealant tape to the threads before reinstalling and do not overtighten, as the port threads are often cast into a plastic or composite fitting.

Technical Specifications

• Material: Magnesium
• Length: 32 inches
• Diameter: 0.84 inches
• Connection Size: 3/4 inch
• End Type: Hex
• Application: Replacement Part

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100108660