Ao Smith 100112446 KA-90 Aluminum-zinc Outlet Anode 29 in

Product Description

The AO SMITH 100112446 is a KA-90 aluminum-zinc outlet anode rod designed to protect the inner lining of water heater tanks from corrosion. Anode rods work through electrochemical action, sacrificing themselves over time so the tank walls are not attacked by corrosive water chemistry. This outlet-style anode installs through the hot water outlet port, combining the function of a standard anode with the outlet connection. At 29 inches in length, it is sized for full-size residential and light commercial water heater tanks. Licensed plumbers handle this replacement as part of routine water heater maintenance.

Outlet anode rods are a standard replacement item in residential and light commercial water heater service. The aluminum-zinc alloy formulation is suited for water conditions where magnesium anodes may produce odor issues. This rod is intended as a direct replacement part for compatible AO SMITH water heater models where the anode is accessed through the hot water outlet fitting. Regular inspection and replacement of the anode rod is a key maintenance step in extending tank service life.

Key Features

• Aluminum-zinc alloy construction provides sacrificial corrosion protection for the tank interior
• Outlet-style design combines hot water outlet connection with anode rod function
• 29-inch length sized for full-size residential and light commercial tanks
• OEM replacement part for compatible AO SMITH water heaters
• Aluminum-zinc formulation is a common alternative where magnesium anodes cause sulfur odor

Compatibility

Designed as an OEM-style replacement outlet anode rod for compatible AO SMITH water heater models. Consult the unit nameplate and service documentation to confirm fitment before installation.

Installation Notes

Outlet anode rod replacement is performed by a licensed plumber. Shut off the cold water supply and disconnect power or close the gas valve before beginning service. Relieve tank pressure through a hot water faucet before removing the outlet fitting. Apply thread sealant rated for potable water systems per local plumbing code requirements.

Technical Specifications

• Material: Aluminum-Zinc Alloy
• Length: 29 inches
• Application: Replacement Part

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100112446