Depending on the condition of your original faucet you may have to use multiple methods to identify the correct parts.
Bathroom faucet cartridge identification.
Observing this part of your faucet is often a good way to at least narrow down the brand possibilities as different companies have different broach sizes and shapes.
Faucets used a 1224 b prior to 3 2014.
Cartridge length and shape.
Pay attention to the length tier of your cartridge lengths range from 1 12.
In order to determine the type of cartridge your faucet will use remove the handle.
Manufacturer logo or model number.
The duralast 1234 cartridge is a black cartridge with a stainless steel stem.
The model number or part number is typically preceded by p n in the image above the model number is 6227 v3 aa.
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The model number is printed on a tag that is attached to the cold water supply line of the faucet.
Do this by measuring from the base to the tip from seat to splines.
The 1224 is a white cartridge with a white stem.
Identify delta faucets by their d shaped broach.
These cartridges are not interchangeable.
How to use a faucet valve stem cartridge identification chart use a caliper or ruler and measure the cartridge.
Spline teeth count on broach.