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…

“Ordered the wrong part for a faucet, texted them about and pictures of what I needed, they let me do a refund and they didn’t have the exact part but sent me a link to Kohler who did have it. They’re so helpful, I’ll totally order from them again. I’ll probably text first next time so I get the right thing in the first place :) ”

-Rachelle S.

09/14/2024

$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…

“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