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Single Handle Faucet Cartridge for Glacier Bay & Allen + Roth RP20124

Tan cartridge body with light blue limit stop brass stem handle connection black o-ring and blue bottom seal.
Single Handle Faucet Cartridge for Glacier Bay & Allen + Roth RP20124 - Image 2
Single Handle Faucet Cartridge for Glacier Bay & Allen + Roth RP20124 - Image 3
Single Handle Faucet Cartridge for Glacier Bay & Allen + Roth RP20124 - Image 4
Single Handle Faucet Cartridge for Glacier Bay & Allen + Roth RP20124 - Image 5

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

$87.47

 

The RP20124 is a single-handle ceramic cartridge used in various Peerless, Glacier Bay, and Allen + Roth faucets. It is a replacement part used to fix leaks or restore proper function to a single-handle tub and shower faucet.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, asknoel@noelsplumbingsupply.com, or via the text widget on this screen.

Is a dripping showerhead or inconsistent water temperature ruining your morning? The RP20124 Single-Handle Ceramic Cartridge is the ultimate DIY solution designed to stop annoying leaks, fix temperature-mixing issues, and restore smooth handle operation. Engineered with a durable 40mm ceramic disc system, this replacement valve cartridge acts as an exact fit for a wide variety of popular residential tub and shower fixtures.

 

RP20124

 

  • It is a replacement cartridge for single-handle tub and shower faucets. Replacing the cartridge is a common DIY fix for leaky faucets, which can save water and energy.
  • 4 1/4″ length
  • 40 MM Diameter

 

The tan cartridge has replaced the red & black cartridge.

 

 

 

Customer submitted images. 

 

Common questions about this product

Will this item replace the original OEM part? chevron-icon

Yes, this aftermarket part will replace your OEM 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.

 

 

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

Yes, this is the OEM recommended part.

chat iconWHAT OUR CUSTOMERS SAY…

“The vacuum breaker on my outdoor spigot failed and Noel's Plumbing was the only placeI could find that had the appropriate mfr. part. I sent a text with photos on Wednesday evening to make sure the part I found was correct. In less than 2 hours later, I had a reply confirming it was the correct part. Placed my order that evening and received the part on Saturday afternoon (about 2.75 days) and my plumbing issue was resolved! I highly recommend - I really appreciated the prompt and pleasant response. ”
-Kimberly S.
04/25/2026
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