Model # 1017400

Internet #205400322

Blue Lightning Rod 44 in. Hex Plug Style Segmented Magnesium Anode Rod

Blue Lightning Rod

44 in. Hex Plug Style Segmented Magnesium Anode Rod

$4324 /each
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Product Overview

Every water heater has an anode rod. Water corrodes the inside of steel tank water heaters. The anode rod sacrifices itself to protect the tank. As it deteriorates it should be replaced, or the tank will corrode and eventually leak. Check your anode rod every 2 years as the anode rod's life depends on a few variables, including water quality, tank use, water temperature, and tank quality. The Water Heater Smart Blue Lightning anode rod will help avoid early tank failure. The segmented design allows for replacement in tight spaces. The anode rod can be cut in length to fit short water heaters. The Blue Lightning rod is made of environmentally-friendly Magnesium, with durable, corrosion-resistant, stainless steel links.

  • Hex plug head type
  • Made of magnesium
  • Flexible anode rod (4 section)
  • Stainless steel links
  • 44 in. long
  • Cut to fit your water heater



Product Depth (in.)
Product Height (in.)
Product Width (in.)


Finish Family
Stainless Steel
Product Type
Anode Rod
Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty
Against manufacturer defects

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Customer Questions & Answers

will this anode rod work in my Rheem model 42V50-40F hot water heater

Asked by: Jayhawk
Yes, it should work fine in your Rheem water heater.
Answered by: Autobroker
Date published: 2015-11-11

Are there any disadvantages of using a segmented Mg anode tube vs. the conventional Mg anode tube?

Asked by: WonderWoman
Not that I can think of. The advantage is that you can get a segmented anode rod into your water heater when the ceiling is't tall. If you have a tall ceiling, then you should use a solid anode rod.
Answered by: Autobroker
Date published: 2016-01-14

What is the diameter of this rod?

Asked by: Herman83
It's approx. 19 mm or 3/4"
Answered by: lightbill
Date published: 2017-03-25

Will this anode rod fit as a replacement in Bradford White Model MI5036FBN gas hot water heater??

This heater rod is located in the line where the hot water comes out of the top of the heater. It is NOT at a separate port. The clearance above my unit is only 31 inches so I need the sectioned rod.
Asked by: Jimce
This won't work in a Bradford White water heater. I have one of these at one of my rental houses and you have to use their anode rod. Here's an idea - if you remove all the water from your tank and the straps holding it in (if you have straps), then try tipping the tank to get a little more clearance. Two people recommended for this job!
Answered by: Autobroker
Date published: 2016-03-13
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Customer Reviews

44 in. Hex Plug Style Segmented Magnesium Anode Rod is rated 4.7 out of 5 by 13.
Rated 5 out of 5 by from EASY INSTALL I received the segmented anode rod today it was packed well and had no damage. I turned off the gas at the control and shut the water to the heater off, then drained about 5 gallons of water out. You will need a 1 - 1/16” socket to remove it and a breaker bar or a long ratchet. You can use a ratchet with a piece of pipe for leverage, I have changed a few with that method. When I removed the old anode rod it was pretty much used up (I had changed it 2 years ago) I wraped Teflon tape around the threads and put a little pipe dope on the new anode rod and fed it into the water heater, tightened it then refilled and lit the pilot. This is a cheap fix to extend the life of your water heater.
Date published: 2017-03-20
Rated 5 out of 5 by from worked very well, water heater 1 year old and was gurgling and started to have an odor. I used an... worked very well, water heater 1 year old and was gurgling and started to have an odor. I used an impact wrench, tough location to reach. Worked great , use a ratchet to tighten, have no feel using a impact tool. I could not believe how corroded existing rod was. Would highly recommend! A tip, if you have a magnet to lift the existing plug will help greatly with the recessed location. It sits down about 1/2 inch ,could not get my fingers on it.
Date published: 2017-07-04
Rated 4 out of 5 by from This segmented anode bailed me out of a tight spot. I wish it had been manufactured to an overal... This segmented anode bailed me out of a tight spot. I wish it had been manufactured to an overall length of 30" but ot was easy enough to cut down. I'll buy it again in another 5 years.
Date published: 2017-08-09
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-08-16
Rated 5 out of 5 by from Perfect for low headroom installation This review is for the Water Heater Smart 44 in. Hex Plug Style Segmented Magnesium Anode Rod Model #1017400. This product has an excellent segmented design with stainless steel links between magnesium rods. I installed the product in a 17 year old A.O. Smith 75 gallon water heater. The old rod was fairly disintegrated so I was able to remove it by bending it as it came out since I have only a few feet between the top of the tank and the ceiling. Putting in a new one piece rod would be impossible. The Water Heater Smart product worked perfectly. It dropped into the tank easily and screwed in tightly. I hope it will give my water heater many more years of life. Some things to know about changing your anode rod. All rods have the same hex nut on top which is 1 and 1/16 inches. Because of how tightly they are installed and the corrosion you must use a 6 point impact socket or you risk rounding off the nut. I didn't have a 1 and 1/16 socket but I did have a 27mm socket and it worked perfectly. It was so tight I had to use a breaker bar and a pipe on the ended of it to increase leverage. You do not want to hit it with a hammer as this could damage the tank interior. Make sure you turn off the water and gas/electric feeds first then drain a couple of gallons of water out of the tank to relieve pressure and prevent water from escaping when the rod is removed. The last thing you want is to have your tank turn as you try to break the anode rod free. This could damage you water pipe connections so have someone hold the tank as you break the anode free. As you pull out the old rod if there is not enough room and it wont bend, cut it into sections to get it out. Clean the port threads before you drop in the new anode rod. It may be difficult to get the threads started if the rod is moving around too much. If you run into this, drain out all of the water so the rod cannot float around. Tighten the anode securely but do not over tighten. I recommend about 6 turns of pipe tape on the threads before installation. Open a hot faucet on a tub then slowly open the water valve to fill the tank. Let the water run in the tub until air is out of the lines. You may find some sediment in the water for a while. I found letting the tank sit overnight with no hot water usage helped the sediment to stop coming through the lines. You may wonder, do I need an aluminum or magnesium rod. Either will work. You can tell which you currently have by looking at the hex nut of the anode. If it is a flat top, it is aluminum. If there is a bump in the center, it is magnesium. Aluminum tends to be less aggressive so it degrades slower (but your tank could be degrading faster). It also tends to flake causing a gritty feel in your water and in some cases it can become covered in calcium which prevents it from doing its job. Magnesium is more aggressive so it degrades faster but at the benefit of protecting your tank better. It also doesn't have the grit release like aluminum. I prefer using magnesium but remember to change the anode more often.
Date published: 2015-07-25
Rated 4 out of 5 by from right product at the right price The segmented nature of this anode rod made it the perfect fit for my water heater under a low ceiling.
Date published: 2014-10-21
Rated 4 out of 5 by from Nice design Out water heater is 7 years old and we just now learned about changing the anode rod. The closet where it sits is a bit cramped, so we went with the segmented style to help with installation. Our well water is corrosive anyway, and no amount of prying or pounding will get our old anode rod out. For us, installation isn't going to happen. However, our water heater is likely limited in its lifespan and we will keep up on the anode rod replacement when we get a new one. This is the perfect design for our cramped closet.
Date published: 2016-04-11
Rated 5 out of 5 by from Vital to Sustain Your Water Heater's Life (and easy to fit in with low ceilings too) The segmented design makes it effortless to fit into your heater, even with low ceilings. The magnesium is more reactive than aluminum rods, so it does a more aggressive job of protecting your tank's metal from corrosion. Just change it every five years, or maybe check it yearly. If eaten up, simply replace it again, and your heater will last nearly indefinitely. Probably best to use pipe dope for optimal electrical contact to facilitate the electrolytic action of the rod.
Date published: 2015-04-28
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