B & K Proline 888-557 10" Frost Free Sillcock Stem

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

WHAT OUR CUSTOMERS SAY…

“I am a very small customer (a homeowner) but I will continue to purchase from you! Thank you again! ”

-James V.

12/28/2022

$24.87

The Mueller 888-557 is a ProLine replacement stem assembly for a 10-inch anti-siphon frost-free sillcock (outdoor faucet).

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: 21557 Category: Hydrant Hose Faucet Parts Tag: B & K Products

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B & K Products Frost Free Sillcock Stem

888-557

This is a replacement stem assembly used to control water flow in the anti-siphon frost-free sillcocks (also known as outdoor hydrants, hose bibbs, or spigots).
It is an integral part of the valve body, designed to provide key internal flow control and prevent back siphoning.
For 10″ faucet
Stem measures 13 1/2″ to 14″

UPC: 032888148598

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…

“Just before an event, we had a 9 7/8" round drain cover snap in half. It was an odd size and Noel's was the only place that seemed to have one that would fit. We couldn't leave the hole exposed during the event, and Noel's was kind enough to make sure it was overnighted to us. Their effort was truly appreciated and the cover fit perfectly! I highly recommend them! ”

-Linda C.

03/27/2026