Ao Smith 100110784 Flexible Plug Anode Rod Magnesium 48 in

Product Description

The AO SMITH 100110784 is a flexible plug anode rod constructed from magnesium and designed to protect water heater tanks from corrosion. The rod measures 48 inches in length and connects via a 3/4 inch hex fitting, making it compatible with standard water heater ports where access is restricted. Magnesium anode rods are the standard choice for areas with hard water and for tanks that require active electrochemical protection. The flexible design allows installation in low-clearance spaces where a rigid rod cannot be maneuvered into position. Plumbers and water heater service technicians use this rod as a direct replacement part during routine maintenance or when an existing anode rod has been depleted.

This anode rod is intended for residential and light commercial water heater applications where the sacrificial anode must be replaced to extend tank service life. The flexible construction is particularly useful in installations where the water heater sits in a closet, alcove, or under a low ceiling, and the full rod length cannot be inserted straight down. It fits water heaters equipped with a 3/4 inch hex anode port, which is common across a wide range of storage-tank water heater configurations.

Key Features

• Magnesium construction provides active electrochemical corrosion protection for the tank lining
• Flexible design allows installation in low-clearance and confined spaces
• 48 inches total length for full-depth tank coverage
• 3/4 inch hex plug connection matches standard water heater anode ports
• Direct replacement part for routine water heater maintenance

Compatibility

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

Installation Notes

Installation is typically performed by a licensed plumber. Before servicing, shut off the cold water supply and disconnect power to electric units or set gas units to the pilot position to avoid heating an empty or low tank. A 1-1/16 inch socket and breaker bar or impact wrench is commonly required to break loose the existing anode port plug. Do not overtighten the replacement rod; snug plus a quarter turn with thread-seal tape on the threads is standard practice per manufacturer guidance and applicable plumbing codes.

Technical Specifications

• Material: Magnesium
• Length: 48 inches
• Connection Size: 3/4 inch
• End Type: Hex
• Application: Replacement Part

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100110784