B & K Proline Frost Free Cartridge 889-581

Brass cartrdige with black rubber o-rings.

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

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

$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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