* How to Find Toto Toilet Model Number

When it comes to popular and iconic toilet brands, Toto is one of the most popular out there. It is well known for producing some of the very best toilets and bathroom hardware in the world. With that being said, things can and do go wrong sometimes. Maybe your toilet is broken, it needs a replacement part, or whatever else.

Well, in most cases, what you will need is the model number of the toilet. What we are going to do right now is to teach you how to find your Toto toilet model number.

How to Find Toto Toilet Model Number

In What Situations Will You Need the Model Number?

In case you don’t know why you would ever need the model number for your Toto toilet, there are actually a few reasons why this may be the case.

1. For Replacements

One of the main reasons why you might need to find the model number for your Toto toilet is because you might need replacement parts. Although not always the case, there are many toilet parts that are specifically designed for one toilet or for a specific line of toilets. So if you have broken components and you need them replaced, you will need to know the model number in order to find the right replacement components.

Without the model number, finding the right replacement components came very difficult. And of course, if you get the wrong replacement components, your toilet is not going to function properly or at all.

2. For Repairs

Another reason why you might need your Toto toilet number is in order to perform repairs on the toilet. Broken toilets don’t always need replacement parts. Sometimes a broken toilet can be repaired. However, there are many different types of toilets out there, as well as sizes of toilets. So exactly how a broken toilet needs to be repaired depends on the model and exactly how it functions.

To figure out exactly how your toilet functions, you first need to know exactly which toilet it is, and the only way to find that out is with the model number. Even if you call a plumber, they will still likely need to know the model number in order to fix your toilet properly.

3. For Warranty Info

Another one of the main reasons why you might need your Toto toilet model number is to find out what kind of warranty it has. In case you lost your receipt and all of your documentation when you purchased the toilet using your model number can in fact provide you with all of the warranty information that you need.

This way, in case you need the company to replace or come repair the toilet for you, you can easily find the warranty info for your specific model.

4. For New Purchases

The other reason why you might need to have the Toto toilet number on hand is in case you want to buy a new toilet. If you want a new toilet and you want it to be the exact same one as the one you already have, then you will need to find the toilet model number.

Toto Toilet

5 Ways to Find Your Toto Toilet Model Number

Now that you know why you might need the model number for your Toto toilet, let’s tell you how to find it.

1. Under the Lid

One of the most common places to find the model number on Toto toilets is under the lid of the tank. In many cases, all you have to do is flip up the lid of the tank and look on the underside. This model or serial number will be either stamped or engraved into the lid.

2. In the Tank

In some Toto toilets, the model number may not be on the underside of the lid, but in the actual tank itself. If this is the case, try looking at the top of the tank either at the rear of the tank or on the right-hand side of the tank.

3. Deeper Down

Although not often, there are some Toto toilets where the model number may be stamped or engraved deeper down inside of the tank. If you cannot find the model number on the underside of the lid or at the top of the tank, use a flashlight to look down into the toilet tank.

4. The Rim

Although also not often the case, some Toto toilets may also have the model number printed on the underside or the inside of the rim of the bowl.

5. Documentation

If you still have your original receipt or any of the documentation that you got with your toilet, such as the owner’s manual, then this should also contain the model number. In fact, if you don’t want to go looking around in your toilet, the owner’s manual is where you want to look.

Sample Toto Toilet Model Numbers

To help make your life a little easier, here we have a list of some of the most common Toto toilets and their model numbers.

  • Toto Aimes Toilet: #CST626
  • Toto Aquia Toilet: #CST654
  • Toto Aquia II Toilet: #CST416M
  • Toto Bristol Toilet: #MS866114
  • Toto Carlyle Toilet: #MS874114
  • Toto Carolina Toilet: #MS884114
  • Toto Clayton: #CST784
  • Toto Dalton Toilets: #CST733
  • Toto Dartmouth: #CST754 and CST754E
  • Toto Drake: #CST743


There you have it folks everything you need to know about where to find your Toto toilet model number as well as why you might need it.