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

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

chat iconWHAT OUR CUSTOMERS SAY…

“Do you need a vintage plumbing part and nobody seems to be able to find it in your area? Save yourself time and hassle and go to Noel's Plumbing website. You can text them a photo of the part and they will find it in minutes and give you the link to order it, all at a competitive price. My plumbers seem incapable of doing this and hand the job off to me. What can you do? But Noel's always has the 1930s parts I need or the aftermarket part that will get the job done. If I need it fast I can get it in 2-3 days from them and they know exactly what they are doing. It's a good old-fashioned plumbing store with all the parts you could possibly need and people who know how to get them. The service is top level. The staff pick up the phone after one or two rings. They are polite and KNOWLEDGABLE. I'm so tired of dealing with folks who can't find a chicken in a hen house. LOL. ”
-Bry W.
06/23/2026

$27.17

 

The B&K Proline 888-557 is a 14-inch overall length replacement stem assembly designed for 10-inch anti-siphon, frost-free outdoor sillcocks. It is used to restore proper water flow control and prevent water back-siphoning in outdoor spigots, hydrants, or hose bibbs.

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: Tag:

Stop outdoor faucet leaks and prevent winter freeze-ups with the B&K ProLine 888-557 Replacement Stem Assembly. Designed specifically for 10-inch anti-siphon frost-free sillcocks (compatible with B&K model series 104-511 through 104-619), this OEM replacement part ensures reliable, leak-free water control for your garden hose and outdoor faucet.

 

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

Is this item the original manufacturer's recommended replacement part? chevron-icon

Yes, this is the OEM recommended part.

Is this the correct item for my application? chevron-icon

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.

 

 

chat iconWHAT OUR CUSTOMERS SAY…

“Just want to say THANK YOU for your help with this! I couldn't believe the handle arrived Thursday (after ordering Wednesday). I brought it up to my dad's house Friday and just looking at it I didn't think it was going to fit....but it fit perfectly. So appreciative for your expertise and quick shipping! ”
-Ashley K.
02/04/2023
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