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Moen Solutions

1224 Cartridge: Two Handle 4" Centerset Bathroom Faucets

This article will walk you through the process of replacing the internal water flow cartridge(s) in a small two handle 4" spread faucet. The 4" spread pertains to the measurement  between the hot and cold handles. The information will include details about the tools needed and the method of removal.


  • The water supply shut off valves must be turned off- see article How to Turn Off the Water Supply to the Faucet.
  • Recommended Tools: Pliers
  • The following instructions assume the handle and associated handle pieces have been removed. For additional details, visit and select the type you are repairing. The faucet guide will contain specific information on handle assemblies associated with that style of product.


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  1. Using pliers, unscrew the cartridge nut (#1) to remove. 
  2. Using pliers, grab the white stem of the cartridge (#2)  and pull the cartridge (#2) out.

It is recommended to clean and flush the valve body (#3) prior to installing the new cartridge (#2). See Valve Body Cleaning and Flushing for additional details.


  1. Align the tab on the side of the cartridge (#2) with the notch in the brass valve body (#3) and slide the cartridge (#2) into the valve body.
  2. Install the cartridge nut (#1) by threading clockwise.

For additional information on Moen products visit and select the type of product you are repairing. The guide will contain repair details, troubleshooting and specific information on assembling handles associated with that style of product.

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