Mansfield 8" Stem 123-0093 | Noels Plumbing Supply

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Copper hydrant stem with bright brass threaded end with brass screw black rubber washers stainless spring with graphite packing and metal washer.

Mansfield by Prier M-123-0090 500 Series 4" Stem Assembly - Image 2

Mansfield by Prier M-123-0090 500 Series 4" Stem Assembly - Image 3

Mansfield by Prier M-123-0090 500 Series 4" Stem Assembly - Image 4

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

$43.27

The Mansfield M-123-0090 (also known as Prier M-123-0090) is a replacement stem assembly for “Old Style” Mansfield 500 series frost-proof wall hydrants manufactured between 1970 and 2006.

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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Mansfield Stem Assembly for 4″ Series 500 Hydrant

M-123-0090

This is a replacement stem assembly used to repair leaking issues behind the handle of a compatible wall hydrant without needing to replace the entire unit. It is a “cold” function stem.
It is designed for the “Old Style” full-turn Mansfield 500 series hydrants only and is not interchangeable with other models. It works with specific models like the 578-08 or 579-08 hydrants.
The stem has an overall length (OAL) of 8 inches and is designed for an 4-inch freeze-proof sillcock.

Related Documents

500 Series Faucet Parts Breakdown

UPC:670210370028

Customer submitted images.

Common questions about this product

Yes, this is the OEM recommended part.

If you’re not sure text us a picture 1-888-275-6635 or email us a picture at noelsplumbingsupply@fuse.net.

We will make sure you have the right part.

WHAT OUR CUSTOMERS SAY…

“Noel's Plumbing Supply found this place on Google maps. In and out service. The person I was speaking to the desk offered me a selection knew exactly what I needed price was really reasonable. You don't know how much it means to a homeowner to be able to come in without any run around trying to sell you something you don't need. I recommend this establishment to all my family and friends. ”

-Steve C