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Arrowhead Brass PK2004 420 Series 4″ Frost Proof Wall Hydrant Stem

Copper stem with brass end with black rubber seals polished chrome handle connection.

chat iconWHAT 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

$48.27

 

The Arrowhead Brass PK2004 is a genuine replacement stem assembly designed for the 4-inch 420 Series frost-proof wall hydrant. It measures 8 inches in overall length and includes the packing nut, seals, and O-ring needed for repair.

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: 9pk2004 Category: Tag:

Fix leaky outdoor faucets instantly with the Arrowhead Brass PK2004 Replacement Stem Assembly. Designed specifically for 4-inch Arrowhead 420 Series frost-proof wall hydrants (420BFP), this genuine OEM replacement part ensures a perfect fit and reliable performance.

 

  • Designed for use with the Arrowhead Brass 420 Series Anti-Siphon Wall Hydrant (specifically the 420BFP model).
  • 420 Series stem assembly- 4″ hydrant (measures 8″ end to end).
  • Anti-siphon series with built in check assembly (PK2016).
  • 12-pt handle spline.

 

PK2004

 

UPC:690043001418

 

Customer submitted image. 

 

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…

“Hey these guys are awesome! If you need a part for a fixture they have it send a picture and they can tell you what it is, they know their stuff, they have the weird obscure things you can't find unless you get a whole trim kit or whatever. Worth the trip and the money. They save you tons of time definitely visit ”
-Justin H.
06/05/2026
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