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Pressure Balance Cartridge for Mainline WC0501 RP20131

Tan plastic cartridge with light blue limit stop brass stem black ruber o-ring and blue seals.
Pressure Balance Cartridge for Mainline WC0501 RP20131 - Image 2
Pressure Balance Cartridge for Mainline WC0501 RP20131 - Image 3
Pressure Balance Cartridge for Mainline WC0501 RP20131 - Image 4
Pressure Balance Cartridge for Mainline WC0501 RP20131 - Image 5

chat iconWHAT OUR CUSTOMERS SAY…

“After trying all over my area, I couldn't find the part for the faucet in my older house. The part I needed was found on the first try on their website and ordering was very easy. It was after hours, but someone responded to my text right away. The part was shipped the next business day. After putting the new part in the faucet works better than it has for years! ”
-Mark B.
06/25/2026

$58.27

 

The Mainline WC0501 is a replacement cartridge designed for specific pressure-balanced tub and shower valves. It is primarily used to fix leaks or restore water flow control in Mainline’s shower systems.

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.

SKU: 84191 Category: Tag:

Single Handle Washerless Cartridge for Mainline

 

WC0501

 

  • For use with 458V, 458V-LS and 458V-PEX
  • 5″ length
  • 40 MM Diameter

 

This cartridges replaces the original red cartridge below. 

 

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…

“Ordered the wrong part for a faucet, texted them about and pictures of what I needed, they let me do a refund and they didn’t have the exact part but sent me a link to Kohler who did have it. They’re so helpful, I’ll totally order from them again. I’ll probably text first next time so I get the right thing in the first place :) ”
-Rachelle S.
09/14/2024
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