The anode rod in your Rheem water heater is located on top of your tank. More precisely, your magnesium or aluminum sacrificial anode is visible through a hexagonal head located in the center of your tank under a plastic cover. Refer to your water heater’s user guide for more information.


  1. Brian on September 4, 2020 at 10:52 am

    I have a newer rheum electric water heater and looks like there is insulation above, do I remove to get to the anode rod. The water heater is 50 gallons.

    • Corro-Protec on September 8, 2020 at 11:48 am

      Hello Brian,
      Yes, it’s possible that you need to remove some insulation on the top of the tank in order to change the anode.

  2. Danny on August 24, 2020 at 12:39 pm

    I can’t seem to find the Anode rod or hex nut on top of my Rheem water heater, model # XE40M06ST45U0.
    Is it really under one of the rubber caps and beneath the insulation?

    • Corro-Protec on August 24, 2020 at 1:47 pm

      Yes, the anode rod on this Rheem water heater is located under the plastic cap just in front of the cold water inlet.

    • Paul Kovach on September 20, 2020 at 12:36 pm

      I found mine in the tank under the supply line to the house. It was not under any clear plug as they say. I probed 8 inches into the insulation at all three plugs and found nothing. Should have found it under the insulation about 2 inches at most. It was a special order rod. Home Depot does not stock this type of rod.

  3. jim on July 18, 2020 at 2:11 pm

    I have a 40 gal electric rheem water heater took both plastic plugs out no rod where else could it be

    • Corro-Protec on July 27, 2020 at 11:46 am

      Hello Jim,

      It should be under one of those plastic cap. Sometime, you will see some insulation on the top of the anode.

  4. Scott Current on June 28, 2020 at 3:45 pm

    I’m looking for the anode rod location on my Rheem Model 21VP50E. I took two plastic covers off and removed (dug out) the insulation I was looking for and did not see the hex head I was expecting.

    • Corro-Protec on July 2, 2020 at 7:52 am

      Hello Scott,

      Do you have any other plastic cap on the top? The anode should be under!


  5. Karen Winchester on January 22, 2020 at 4:39 pm

    I have a Rheem 30 gal electric water heater… 12 years old. Would like to change the anode, but no hex nut on top. There are 2 plastic covers (with insulation under them ??). Is the hex nut under that?? Model # 82SV30-2

    • Corro-Protec on January 22, 2020 at 9:01 pm

      Hello Karen,

      Yes, the anode rod in your Rheem water heater should be located under the plastic cover.


  6. Ray Hammons on November 19, 2019 at 6:27 pm

    I have 2 hexagonal heads on my heater. One on each side of pressure valve. How do know which one it is or do I have 2? Also one is packed with fiber insulation and one is foam. Pls help.

    • Corro-Protec on November 20, 2019 at 9:10 am

      Hello Ray,

      To know where is the Anode rod on your Rheem water heater, I would like to know the model number of the tank.

      Thank you,

      • Ralph Crawford on November 26, 2019 at 5:36 pm

        I have the same question. My unit is a model 82v52-2. Also the dip tube part #SP13763M for it seems to be made of unobtainium. No one has one. Thank you.

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