B & K Proline 888-558 12" Frost Free Sillcock Stem

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Bright brass stem with brass screw black rubber washers stainless spring and metal washers.

WHAT OUR CUSTOMERS SAY…

“Order received and installed. Thank you very much (spoken mentally in my best Elvis voice). Really is nice to know that there is still a business out there that's got their act together! Appreciate the quick service and correct parts shipping. Thanks again.. jP ”

-Jack P.

04/02/2026

$26.47

The Mueller 888-558 is a replacement stem assembly for anti-siphon, frost-free sillcock (outdoor faucet) valves.

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: 21558 Category: Hydrant Hose Faucet Parts Tag: B & K Products

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B & K Products Frost Free Sillcock Stem

888-558

This product is a replacement stem assembly used to repair single-control, anti-siphon, and frost-free sillcock valves. It helps fix issues like constant dripping or a faucet that won’t shut off completely.
For 12″ faucet
Stem measures 15 1/2″ to 16″

UPC: 032888148604