B & K Proline Frost Free Cartridge 889-581

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Brass cartrdige with black rubber o-rings.

B & K Proline Frost Free Cartridge 889-581 - Image 2

B & K Proline Frost Free Cartridge 889-581 - Image 3

WHAT OUR CUSTOMERS SAY…

“Thank you for exact part. Just received and replaced and worked out great! ”

-Karl D.

09/05/2025

$27.17

The ProLine 889-581 is a specific ceramic cartridge used for repairing old-style frost-free outdoor faucets (sillcocks) made by B&K Mueller.

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.

SKU: 23205 Category: Hydrant Hose Faucet Parts Tag: B & K Products

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B & K Products Frost Free Sillcock

889-581

It is specifically for the “old style” B&K Mueller ProLine frost-free faucets and not compatible with the newer models.
It is a 1/4-turn cartridge, meaning the water flow goes from off to on with a quarter turn of the handle.
The cartridge provides key internal flow control and a water-tight connection within the sillcock valve body.
3 13/16″ Length

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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…

“The cartridge in my kitchen sink broke last week so I've been without that sink for a whole week. I ordered a replacement from Noel's, which I could not find anywhere else and it worked perfectly. Thank you! You saved me! ”

-Matt F.

09/19/2025