0.800" x 53-3/8" Magnesium Anode Rod

Rheem AP11525W-2 Magnesium Anode Rod – OEM-Grade Tank Protection

The Rheem AP11525W-2 is a magnesium sacrificial anode rod engineered to prevent corrosion within residential water heater tanks. By mitigating internal rust and mineral scaling, this component helps extend tank integrity and maintain system performance over time.

This rod serves as a direct replacement for the AP11525W-1 and is compatible with select Rheem water heater models. It features magnesium construction for optimal electrochemical reactivity in standard water conditions and is suitable for closed-loop plumbing systems where dielectric protection is essential.

Product Specifications

• Material: Magnesium (sacrificial type)
• Diameter: 0.800 in
• Length: 53-3/8 in
• Threading: Standard 3/4 in NPT (tapered)
• OEM Part Number: AP11525W-2 (supersedes AP11525W-1)

Application Notes

Intended for use in vertical tank-type water heaters. Periodic replacement of the anode is necessary to prevent tank wall degradation due to galvanic activity. The service interval varies based on water chemistry, electrical grounding, and system usage, but visual inspection every 2–3 years is advised in standard domestic installations.

Installation Guidelines

Installation requires access to the anode port, typically located at the top of the tank. Use of a torque wrench is recommended to ensure proper seal and seating. Always depressurize the system and isolate electrical power before attempting to remove or install anode rods. An approved Teflon-based sealant should be used at the threads. Installation should be performed by a licensed plumbing contractor to comply with local codes and ensure system integrity.

Professional Use Considerations

For plumbing and HVAC professionals servicing electric and gas-fired storage tanks, the AP11525W-2 offers reliable protection against corrosion-driven failure. As an OEM component, it provides proper material compatibility and fit for supported Rheem models, reducing the likelihood of premature tank deterioration. Not recommended for high-chloride or softened water environments where aluminum/zinc alloy anodes may be more appropriate.