Ao Smith 100300397 Magnesium Anode Rod Kit 16 in Dht Nipple

Product Description

The AO SMITH 100300397 is a magnesium anode rod kit designed to protect water heater tanks from internal corrosion. The kit includes a 16-inch magnesium anode rod paired with a 5-inch dielectric heat trap (DHT) nipple, making it a complete assembly for direct installation. Magnesium anode rods work through sacrificial electrochemical action, corroding in place of the steel tank lining. This extends tank service life and is a standard maintenance component replaced by licensed plumbers during routine water heater servicing.

This anode rod kit is suited for residential storage-type water heater applications where the existing anode rod has depleted or when a water heater is being serviced for odor, reduced efficiency, or as part of a preventive maintenance schedule. The included DHT nipple simplifies the installation by combining the anode rod and heat trap nipple into a single serviceable unit, reducing overall labor time during replacement.

Key Features

• Magnesium construction provides effective sacrificial corrosion protection for steel water heater tanks
• 16-inch rod length suitable for standard residential water heater configurations
• Includes 5-inch DHT nipple for integrated heat trap functionality
• Nipple-style end type allows straightforward threaded installation
• OEM replacement part designed to restore factory-level tank protection

Compatibility

Designed as an OEM-style replacement anode rod kit for residential storage water heaters requiring a 16-inch magnesium anode with a DHT nipple assembly.

Installation Notes

Installation should be performed by a licensed plumber. Before servicing, shut off the cold water supply and power or gas to the water heater, and relieve tank pressure at a hot water faucet. A socket wrench with a 1-1/16-inch socket is typically required to remove and install the anode rod. Follow all applicable local plumbing codes and manufacturer guidelines during replacement.

Technical Specifications

• Length: 16 inches
• End Type: Nipple
• DHT Nipple Length: 5 inches
• Material: Magnesium
• Application: Replacement Part

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100300397