Moen 121549 Commercial 1 Handle Ceramic Cartridge K40B 170619

Bright blue and white plastic cartridge with bright brass bonnet nut black rubber o-ring and black rubber seals.

Bright blue plastic cartridge with grey plast limit stop with white square handle connection, white bottom with black o-ring and black bottom seal.

Moen 121549 Commercial 1 Handle Ceramic Cartridge K40B 170619 - Image 3

Moen 121549 Commercial 1 Handle Ceramic Cartridge K40B 170619 - Image 4

WHAT OUR CUSTOMERS SAY…

“The staff knew exactly what I needed and where to find it. Quick in and out. ”

-Andre W.

06/15/2026

$34.71

The Moen 121549 is a single-handle ceramic disc cartridge designed primarily for Moen 8413 series commercial and residential faucets. It is a critical repair part used to fix leaking or dripping faucets by ensuring smooth water flow and temperature control.

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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Moen Single Handle Faucet Ceramic Cartridge

121549 K40B 170619

Specifically fits Moen Commercial 8413 series, including models 8417, 8419, and 8419BC.
3 1/4″ length
40 MM Diameter

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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…

“Y'all are amazing. I live in Texas and it's faster to order express from Noel's than go to local parts stores. Customers can text Noel's a picture of the part they need and Noel's will find that part or the equivalent and text the link. They have 2-3 day shipping available. The staff answers the phone quickly, politely and they know their stuff! The unit I needed plumbing parts for was built in the 30s. No matter, Noels has me covered. I highly recommend them. Thank you Noel's for your efficient, old school excellence combined with current technology! You have saved me so much time, money, and aggravation! A++++++ ”

-Thalia,

07/03/2026