Moen 103674 Thermostatic Cartridge

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White plastic cartridge with brass top black rubber o-rings and metal spring.

WHAT OUR CUSTOMERS SAY…

“These people were extremely helpful in taking me through replacing a 25 year old hard water frozen cartridge on my Philrich sink faucet. They were able to identify the correct part I needed from a photo I sent (I had it figured out wrong). I was pleasantly surprised they had an obscure part like this, but they also told me how to extract the old one when I couldn’t get it out. They said to unscrew it after I had concluded from YouTube the old cartridge was supposed to just slide out. It threaded out as they said and saved me buying a cartridge extractor and a hernia. The whole experience has been excellent. ”

-Pete L.

03/10/2026

$358.27

The Moen 103674 is a replacement thermostatic cartridge kit specifically designed for the Moen 1/2″ ExactTemp valve system. This cartridge is used to maintain a precise water temperature in high-end shower or vertical spa configurations.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

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Restore the precise, comfortable temperature control of your shower with the Genuine Moen 103674 Thermostatic Cartridge. Designed specifically for Moen ExactTemp 1/2″ thermostatic tub and shower rough-in valves (models 3301 and 3321), this replacement cartridge ensures seamless, reliable performance, eliminating temperature fluctuations.

103674

Primarily for the 3301 and 3321 ExactTemp rough-in valves, which were introduced in 2000 and retired in 2006.
Works with the Moen Asceri 1/2″ ExactTemp Vertical Spa systems.