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Moen Solutions

174290 Stem Extension Two Handle Widespread Bathroom Faucet

partial splines short with top view.png

This article is based on a stem extension with partial splines on the outside and smooth inside. Widespread valves began using this stem extension in December 2014. If you are unsure the above image is your version, see Two Handle 8" Wide Spread: Lever or Two Handle 8" Wide Spread: Knob for details.

This article explains the process of replacing the stem extension on a bathroom faucet.


  • The water supply shut off valves must be turned off- see article How to Turn Off the Water Supply to the Faucet.
  • Recommended Tools: Needle-Nose 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.

short valve breakdown.png


1. Disconnect the stem extension (#2) from the stainless steel cartridge stem by pushing on the side of the stem extension (#2) that has 5 splines. Use needle-nose pliers to pull the stem extension (#2) out.


1. Snap the stem extension (#2) onto the stainless steel cartridge stem.

2. Rotate the stem extension (#2) to the "off" position (clockwise for hot, counter clockwise for cold) until it stops. Reinstall the handle.

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

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