Lochinvar & A.O. Smith 100109434 Anode

The Lochinvar & A.O. Smith 100109434 Anode is a critical OEM replacement part engineered to provide galvanic corrosion protection for residential and commercial water heaters. This magnesium anode rod features a 3/4" NPT hex head connection, a 16-inch length, and a 0.84-inch diameter, making it the standard sacrificial anode for specific A.O. Smith, Lochinvar, State, and Reliance tank models. By utilizing a highly reactive magnesium alloy, this rod effectively neutralizes corrosive elements in the water supply, preventing the internal steel tank from oxidizing and eventually leaking. For technicians performing water heater maintenance, replacing a depleted water heater anode rod is the most cost-effective method to increase the service life of the equipment. This genuine component ensures a precise fit and reliable corrosion resistance, meeting the original factory specifications for 100109434, 9003721005, and 9001834 part numbers.

• Magnesium Construction: Provides superior electrochemical protection compared to aluminum in most water conditions.
• 3/4" NPT Compatibility: Standardized threading allows for straightforward anode rod replacement across multiple brands.
• OEM Precision: Genuine A.O. Smith anode rod ensures exact 0.84" diameter clearance for the internal tank space.
• Tank Longevity: Actively prevents rust-out and localized pitting in the steel lining.
• Hex Head Design: Simplifies removal and installation using a standard socket wrench.

• How do I know if this rod fits my water heater? This 16-inch rod is specifically designed for models like the GPD-40 and GPD-50. Check your manual for part number 100109434 or 9003721005 to confirm compatibility.
• Can this magnesium rod be used with a water softener? Yes, though magnesium rods may deplete faster in softened water. Regular inspection every 12 to 24 months is recommended.
• What tools are required for installation? You will typically need a 1-1/16" socket and a breaker bar to remove the existing hex head sacrificial anode.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.