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42 in. Anode Rod with 3 in. Nipple Fitting

  • Prevents the corrosion of water heater tanks
  • 4 Sections for flexible installation
  • 3/4 in. x 3 in. nipple fitting
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Product Overview

The 42 in. Eastman Flexible Aluminum/Zinc Anode Rod helps prolong the life of your water heater tank by attracting corrosion to Itself. The rod corrodes through electrolysis, a process that protects the steel walls of the water heater by attracting corrosion to a more noble metal. The anode rod is built with a carbon steel cable and 4-sections of aluminum/zinc links. It features a durable stainless steel 3/4 in. x 3 in. NPT nipple connection. Easy to install by attaching it to the top of the tank to keep it steady. The anode rod should be inspected every 2-years and replaced as needed.
  • Aluminum/zinc construction with flexible carbon steel cable and durable corrosion-resistant stainless steel nipple
  • Helps prevent the rotten egg smell of sulfur
  • 42 in. long with a diameter of 5/8 in.
  • Can be cut to fit your water heater
  • Installation is easy at the top of the water heater tank
  • 12 in. minimum clearance required for installation
  • Recommended to check the life of your anode rod every 2-years and replace as needed
  • Lead-free compliant
  • For use in residential water heater tanks
  • Fits most brands of water heaters
  • California residents

Info & Guides

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Product Depth (in.)
18.5 in
Product Height (in.)
3 in
Product Width (in.)
4.75 in


Water Heater
Compatible Brand/Model
Compatible with most brands
Finish Family
Pack Size
Product Weight (lb.)
2.09 lb

Warranty / Certifications

Manufacturer Warranty
1 Year Limited Warranty

Questions & Answers

Typical questions asked about products:

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Customer Reviews

  • 5
    out of 5 reviews
  • 100%recommend this product
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Showing 1-5 of 5 reviews
Eastman 42 in. Anode Rod with 3 in. Nipple Fitting
The Eastman 42 in. Anode Rod with 3 in. Nipple Fitting is a product that you need to help prolong the life of your water heater. First off, the directions are very easy to follow and make sure that you do in fact follow those instructions correctly. Make sure the water supply is turned off and when you begin installation you will soon realize how important this replacement product is because your old product is going to look very corroded. Rule of thumb is to replace these every two years.
  • Recommended
Great for tight spots
This flexible anode rod is specifically designed for water heaters that don’t have a lot of room above the heater that will allow for the removal of a 42-45 inch anode rod. If your ceiling is within the 45 inch limit, you’ll have to bend or cut the old rod in order to get it out. That will be messy as the old rod will be coated with lose debris. This rod eliminates that hassle. With this rod, be sure that you need one that has this 3 inch nipple which is a water inlet.
  • Recommended
Easy to install anode rods
Eastman 42 in. Anode Rod with 3 in. Nipple Fitting Having to replace your water heater is never an easy or inexpensive home repair, and it usually happens as an emergency following a water leak and big mess! The typical water heater lasts only 4-8 years. The lifespan is so low due to a lack of preventive maintenance. That maintenance has two key parts: flush the tank once a year, and check/replace the anode rods every 2 years. Flushing removes sediment that reduces efficiency, and the anode rods help to keep the tank itself from rusting out and causing leaks. Doing these tasks can easily double the life of your water heater. Be sure to buy the correct anode rods. Those made from aluminum work great with hard water, while magnesium is best for soft water situations. Adding zinc can reduce the smell of sulfur in your water. The Eastman anode rods are a great choice, as they are available in both magnesium and aluminum. They are also made in connected segments that allow easy installation and removal- something that comes in handy if you have low ceilings. Be sure to check your water heater to verify if you need a nipple fitting or hex-head model.
  • Recommended
Make sure you need the nipple end version; I really needed the hex head plug end version.
The water heater in my house had gone without replacing the anode and started to leak right at the supply line joint on the water heater and was puddling water on the ground. This is about 1.5 year ago. I had to buy a whole new water heater instead. When I researched and pulled out the old anode from the rusted tank, all it had left was the metal rod stem, all the anode material was gone. That was a hard $$$$ lesson to purchase a new water heater rather than doing the proper maintenance of 2-3 years replacing the anode rod which is much cheaper $ to do. My challenge with this replacement anode rod is that it has a steel nipple end rather than a hex cap nut end, which would be easier to install. See my pic of the current anode rod in place that has a hex head plug end. So be careful because most likey your water heater uses the one with the hex head plug end. I think I have to do similar like the other reviewer and go get a brass cap to put on the open end of the 3 inch nipple. So if you are like me, you don't have everything to install it right away now. Be sure to check this on your water heater which version you need. See pic of the diagram on the back of the packaging that shows this type of rod is used in connecting directly to the water supply line, but my water heater has a separate connection point for the anode rod. I will have to see if I can get my pipe wrench on the nipple pipe to get a good grip so that I can tighten it on the water heater. I think I need to use two pipe wrenchs so that I can tighten the cap onto the nipple pipe thread before I install and tighten onto the water heater too...so it's going to be a bit challenging to do this. What is good about this anode rod is that it is linked like sausage links, makes it much easier to install rather than a solid rod piece which you may not have enough head room to install. You should also consider there are also the type of anode material. This one is aluminum anode but there is also anode rod made with magnesium. Eastman makes both types, so read about the pros and cons and decide for yourself too. Overall, its well made. Made in China. Flexible links, but need to check on your water heater first do you need the hex head version or the straight 3 inch nipple verion. My current
  • Recommended
Replace anode rod every 3 years
Our anode rods degrade about every three years in our electric water heater in central Texas. We have a water softener in line, but the anode rod still keeps the inside of the water heater from degrading. When I received this version of the Eastman anode rod I noticed that the end was different. My previous anode rod had a hex head. This new one had an open-threaded head. I learned that some water heaters attach the pressure relief valve to the top of the anode rod. Mine doesn't. So I had to attach a brass cap to the end of the anode rod. Also, my water heater is in a closet which is why I select the jointed and flexible Eastman anode rod. It allows me to fish the anode rod into the tub. I added a blue thread goop that prevents leaks like teflon tape or pipe dope. The process is simple. Turn off the power, turn off the water, release the pressure, attach a hose to drain some (hot) water, and remove the old rod. Then repeat the process to install the new anode rod. See attached video. I decided to do a quick flush of the water heater also. My previous water heaters lasted 14 years. I change anode rods. Most of my neighbors lasted 7-8 years. Their tanks rusted. This is a good product from Eastman.
  • Recommended
Showing 1-5 of 5 reviews