If you have been experiencing leaks, dripping, reduced water flow, or temperature control issues with your Delta faucet, it is likely that a worn-out cartridge is the culprit. At that moment, it will be crucial to replace it.

Now, the question arises, “How can you replace Delta single handle kitchen faucet cartridges?”

First of all, it requires a few simple tools and a bit of patience. Next, you can start the replacement by following these steps:

  • Turn off the water supply valves.
  • Remove the handle and set the screws.
  • Loosen and remove the bonnet nut.
  • Pull out the cartridge using pliers.
  • Insert the replacement cartridge.
  • Reassemble the faucet with the bonnet nut and handle.
  • Turn on the water supply and test the faucet.

For a better demonstration of the process, I will cover all the bases to ensure a successful cartridge replacement. So, grab your tools, and let’s get started!  

Delta Cartridges: What Are They?

Delta cartridges refer to the internal valve mechanisms used in Delta faucets. They are responsible for controlling the flow and temperature of the water. These essential components regulate water flow and provide smooth operation of the faucet handle.

Depending on the model and design, Delta faucets use different types of cartridges. The following are the three primary types of Delta cartridges commonly used.

  • Delta Single-handle Cartridge: This type of cartridge is used in single-handle faucets where a single lever controls both the water flow and temperature. It features a cylindrical shape with various seals, o-rings, and control mechanisms. Often, single-handle cartridges are found in kitchen faucets, bathroom sink faucets, and shower faucets.
  • Delta Dual-handle Cartridge: The dual-handle Delta faucets use this type of cartridge, where separate handles control hot and cold water. It consists of two cartridges, one for each handle. Commonly, these faucets can be found in shower faucets, widespread bathroom faucets, and older bathroom sink faucets.
  • Delta Pressure Balance Cartridge: In particular, the Delta tub and shower faucets are equipped with such faucets. The pressure balance cartridge can maintain a consistent water temperature even if there are fluctuations in water pressure.           

Why Do You Need To Replace Delta Single Handle Kitchen Faucet Cartridges?

There are several reasons why you might need to replace a Delta single-handle kitchen faucet cartridge. Among them, the following reasons are very common.

  • Like any mechanical component, a faucet cartridge can wear out over time. Continuous use, exposure to water, and mineral deposits can cause deterioration of the cartridge. In such cases, you should replace the faucet cartridge to ensure proper functionality.
  • When the cartridge gets old, it can wear out or become damaged. As a result, water may start to leak from the faucet. To restore leak-free operation, you need to replace the Delta single handle kitchen faucet cartridge.
  • A dripping faucet is not only annoying but can also waste a significant amount of water. A worn-out cartridge may cause the faucet to drip even when it is fully closed. In that case, replacing the cartridge can fix the problem.
  • Sediment or mineral buildup can clog the cartridge, restricting water flow. If you notice reduced water flow or pressure from your kitchen faucet, it could be due to a faulty cartridge. Then, you might have to change your Delta single handle kitchen faucet cartridge.
  • In some cases, a faulty cartridge can restrict the temperature of the water. You may experience difficulties adjusting the water temperature or notice that the water doesn’t get hot enough. At that point, you should replace the cartridge.

Things You Need To Replace Delta Single Handle Kitchen Faucet Cartridge

Replace Delta Single Handle Kitchen Faucet

Before you start replacing a Delta single handle kitchen faucet, make sure you have the necessary tools and a replacement cartridge specific to your Delta faucet model. Typically, you will need the following items.

  • Replacement cartridge (specific to your Delta faucet model)
  • Adjustable wrench
  • Screwdriver (Phillips or flathead, depending on your faucet model)
  • Pliers
  • Towels or rags
  • Plumber’s grease (optional)
  • Safety glasses (recommended) 

How To Replace Delta Single Handle Kitchen Faucet Cartridges: The Step-By-Step Process

Replacing a Delta single-handle kitchen faucet cartridge is easy. The process involves several steps that I have listed below. Hence, follow each step carefully to replace your Delta single-handle kitchen faucet cartridge in no time.

Step 1: Turn Off the Water Supply

First of all, locate the water supply valves beneath the sink. Then, turn them off by rotating the handles clockwise. This will shut off the water flow to the faucet.

Step 2: Relieve Pressure

Turn on the faucet handle to release any remaining water pressure. This is needed to prevent any potential spraying when you remove the cartridge.

Step 3: Remove the Handle

Usually, a set of screws is located at the base or underneath the handle. Once you find these screws, use a screwdriver to loosen and remove them. Lift the handle off the faucet after removing the set screws.

Step 4: Remove the Bonnet Nut

Using an adjustable wrench, loosen and remove the bonnet nut. Turn it counterclockwise until it is loose enough to remove by hand. The bonnet nut may be tight and require some force to loosen. So, be cautious while removing it.

Step 5: Remove the Cartridge

With the bonnet nut removed, you can now access the cartridge. Grab the cartridge stem with pliers and pull it straight out. If the cartridge is stuck, you may need to gently twist it back and forth while pulling to loosen it. Once the cartridge is free, remove it completely.

Step 6: Install the Replacement Cartridge

Take the replacement cartridge and align it with the opening. Make sure it is inserted in the correct orientation. Push the cartridge straight into the valve body until it is fully seated. While doing this, you may need to apply gentle pressure.

Step 7: Reassemble the Faucet

Reinstall the bonnet nut by hand and then tighten it with an adjustable wrench. However, don’t overtighten, as it may damage the cartridge or the faucet. Place the handle back on the faucet and secure it with the set screw. Use the screwdriver to tighten the set screw.

Step 8: Turn on the Water Supply

In Step 1, you turned off the water supply. Now, it is time to turn it on. By rotating the handles counterclockwise, you will open the water supply valves. This will restore the water flow to the faucet.

Step 9: Test the Faucet

Turn on the faucet and check for any leaks or irregularities in the water flow. Double-check if the cartridge is properly seated or if the bonnet nut is securely tightened. For major issues, consult a professional plumber.

That’s it! You have successfully replaced the Delta single-handle kitchen faucet cartridge. I highly suggest watching the following video if you have any confusion with the words or any steps.


Without knowing the following queries, it may not be enough to know the process of how to replace Delta single handle kitchen faucet cartridges alone. These are some common questions asked by people. So, let’s take a look.

What is the cartridge in a kitchen faucet?

The cartridge in a kitchen faucet is the internal valve mechanism that controls the water flow and its temperature. It is a crucial component of the faucet. It enables you to adjust the water flow. For this component, you can also mix hot and cold water by turning the faucet handle.

How do I identify a Delta kitchen faucet?

Since 2012, Delta faucets have been adding model identification tags for all models. Usually, it can be found on the faucet. You can also look for the Delta logo on the faucet body or handle. Check for a model number stamped on top of the package box or near the UPC code.

How do I know what Delta cartridge I need?

Determine the Delta cartridge you need by checking the model number on the faucet or using the product identification resources available on the Delta Faucet website. If needed, contact Delta customer support for assistance in identifying the faucet model.

Final Words

If you have come this far, I bet you have found an answer to the question, “How to replace Delta single handle kitchen faucet cartridges?” By following the steps, you can successfully address common issues like leaks, dripping, and poor water flow. So, you have learned a practical DIY task that can restore the functionality of your faucet.

Don’t forget to maintain your faucet and replace its cartridges on a schedule. It is essential to make your Delta single handle kitchen faucet last longer. If you encounter any challenges, it is always advisable to seek professional assistance.


Oliver aka Arannyk Monon is a versatile content writer, editor, and content strategist. He has been writing for the last 10 years to help people get the actual information that they are searching for on Search Engines. He has proven expertise in Kitchen, automotive, camera, hosting, and other technical topics.

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