Water Heater Rescue: Know-How, Solutions, Parts graphic

Products > Water Heater Rescuer Kit With Solid Combo Magnesium Anode With 4-Inch Pipe Nipple

Picture of Water Heater Rescuer kit with solid combo  magnesium anode, sediment flush kit and Water Heater Workbook


  • a .84-inch-diameter (25 percent more than a standard factory anode) solid combo magnesium anode rod (about 48 inches of overhead clearance needed). The anode is 48 inches long. It has a 4-inch plastic-lined steel nipple, meant to be used in heaters with up to 2.5 inches of insulation.
  • curved dip tube with 4-inch nipple
  • ball-valve drain assembly with cap
  • Water Heater Workbook
  • pipe thread seal tape
  • instructions
  • service sticker

This kind of anode screws into the hot-water port and can either replace another combo rod or augment a hex-head anode. Fits all residential water heaters with 3/4-inch plumbing. (Heaters of 75 gallons and greater usually have bigger plumbing, and some of these parts may not fit them. Consult before ordering).

IMPORTANT! If you have an electric water heater made after April 2015 by A.O. Smith, State, Kenmore, Reliance, American, Maytag or Whirlpool, then get SKU1 because these tanks require longer pipe nipples.

Click here to learn how to read the label to know when a water heater was made.


  • The anode will keep your tank from rusting and breaking.
  • The dip tube and drain assembly control sediment buildup by forcing water and sediment to swirl around the bottom of the tank and out.
  • The ball valve has a relatively large diameter opening and a straight path, which make it harder for big sediment chunks to clog it, and easier to clear it if they do.
  • The cap keeps the unwary from flooding the water heater space by accidentally opening the ball valve.
  • The tape will make it easier to get the anode out to check its consumption down the road.
  • The book will not only guide you to the installation of parts, but help you understand and resolve other water heater problems.
  • The sticker will help you remember when you installed the parts.


  • Pipe wrench
  • adjustable pliers
  • drill with 7/8-inch hole saw
  • basin wrench
  • hammer
  • flat-bladed screwdriver.
For further details, check out the Tools page.



Merchandise in original condition can usually be returned within 120 days for a full refund of the purchase price, not including shipping. E-mail mail@waterheaterrescue.com for instructions and authorization.


The shopping cart generates an invoice and response, but we will give you delivery date and tracking information within a few days of your order by e-mail. We try to ship within one business day. If there is any hitch, we'll let you know immediately. If you hear nothing, consult your e-mail junk file. It's not uncommon for spam blockers to reroute our e-mails.


The products offered here are designed to make water heaters last longer, or solve specific problems. Installation is potentially do-it-yourself, but if you have the least doubt about your abilities, we suggest that you obtain expert help.

Remember also that if you have difficulties with installation, odds are that a professional or handyman will know a way to do it.

Shipping is by UPS within the contiguous United States. UPS does not deliver to post boxes. Allow up to about a week for delivery. Canada, Hawaii and Alaska are only served by Priority Mail and can use a post box.


If you contemplate adding an anode to a new tank, things have gotten more complicated than they used to be. The combo anode will not work in heaters made in 2005 or later by Rheem/Ruud/Richmond/GE. Also, if there are two anodes in a tank, they need to be of the same metal. Otherwise, the magnesium rod will be consumed more rapidly in the presence of an aluminum one and you won't get as long a life. On the other hand, if the tank is five years old or more, having dissimilar metals is less of an issue, since the original one will likely be largely consumed. All the lower-end heaters by A.O. Smith, American, State, Kenmore, Whirlpool and Maytag have aluminum anodes.

Hex anodes compared: aluminum head is flat; magnesium head has bump
We've thought about stocking aluminum combo rods, but we've preached against aluminum for 15 years and won't change now just to make a buck. You still have the option of removing the aluminum hex anode that comes with the tank and installing two magnesium anodes. A plus is that ours are thicker than factory ones.

Also tell us the brand of your heater.

Measure your water heater from the top to the drain valve and send the measurement to us at mail@waterheaterrescue.com. There are a few tanks that are shorter than average that require a shorter curved dip tube.


Back to Product Index
Home | Site Map


Facebook icon Pinterest iconTwitter icon

La traducción español | Privacy Policy

La traduction française | Contact Us

News About Water Heaters | About Us

Resources | The Tank

©Copyright 1995-2018 by Water Heater Rescue
Water Heater Anodes• Smelly Water Heater Solutions