B & K Proline 889-581 Frost Free Faucet Cartridge

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Brass cartrdige with black rubber o-rings.

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

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

WHAT OUR CUSTOMERS SAY…

“After trying all over my area, I couldn't find the part for the faucet in my older house. The part I needed was found on the first try on their website and ordering was very easy. It was after hours, but someone responded to my text right away. The part was shipped the next business day. After putting the new part in the faucet works better than it has for years! ”

-Mark B.

06/25/2026

$28.47

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

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

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Repair your outdoor faucet with the authentic B&K Proline 889-581 ceramic cartridge. Designed specifically for older “old style” ProLine frost-free faucets (not compatible with new models), this 3-13/16 inch cartridge restores 1/4-turn, leak-free operation to your wall hydrant.

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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