Mansfield by Prier M-123-0095 500 Series 12" Stem Assembly

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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-123-0095 500 Series 12" Stem Assembly - Image 2

Mansfield by Prier M-123-0095 500 Series 12" Stem Assembly - Image 3

Mansfield by Prier M-123-0095 500 Series 12" Stem Assembly - Image 4

WHAT OUR CUSTOMERS SAY…

“I texted him a picture of the shower part from the 50’s I needed and he was able to identify it immediately. I ordered it and it showed up in two days! Very knowledgeable and friendly! ”

-Jim F.

02/04/2026

$58.47

The Mansfield M-123-0095 (also known as Prier M-123-0095) is a replacement stem assembly for “Old Style” Mansfield 500 series frost-proof wall hydrants manufactured between 1970 and 2006.

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Mansfield Stem Assembly for 12″ Series 500 Hydrant

M-123-0095

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 16 inches and is designed for an 12-inch freeze-proof sillcock.

Related Documents

500 Series Faucet Parts Breakdown

UPC:670210370042

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…

“I have been here a few times. And I have found it the most helpful and best place I've been to in this area. They explain to me what I need not what I'm trying to tell them what I want. Would recommend to anybody who needed help and plumbing parts. ”

-Joey F