Text or Call: 513-721-5286 | 1-888-Ask-Noel

Store Hours: Mon.-Fri. 8am - 5pm

View Shopping cart 9 View Cart
View Shopping cart 9

Pressure Balance Tub & Shower Cartridge for Mainline

White plastic cartridge with red and blue limit stops square brass stem and black o-ring and bottom washer.
Pressure Balance Tub & Shower Cartridge for Mainline - Image 2
Pressure Balance Tub & Shower Cartridge for Mainline - Image 3
Pressure Balance Tub & Shower Cartridge for Mainline - Image 4
Pressure Balance Tub & Shower Cartridge for Mainline - Image 5
Pressure Balance Tub & Shower Cartridge for Mainline - Image 6

chat iconWHAT OUR CUSTOMERS SAY…

“The cartridge in my kitchen sink broke last week so I've been without that sink for a whole week. I ordered a replacement from Noel's, which I could not find anywhere else and it worked perfectly. Thank you! You saved me! ”
-Matt F.
09/19/2025

$50.27

 

The Mainline A507902 is a replacement pressure balance faucet cartridge designed for tub and shower valves. It is specifically used with Mainline “Generation 3” 410-CP and 410-PEX rough-in valves manufactured between late 2008 and mid-2014.

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: 21560-1 Category: Tag:

Pressure Balance Cartridge for Mainline

 

A507902    

 

  • It is a pressure balance cartridge for single-handle faucets/shower valves, which helps regulate water pressure and temperature.
  • Designed for Mainline 410-CP (Gen 3) valves; also compatible with certain Gerber, Danze, Glacier Bay, and AquaSource models.
  • 5″ length
  • 40 MM diameter

 

Customer submitted image. 

 

Common questions about this product

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.

 

 

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

Yes, this aftermarket part will replace your OEM part. 

chat iconWHAT OUR CUSTOMERS SAY…

“Order received and installed. Thank you very much (spoken mentally in my best Elvis voice). Really is nice to know that there is still a business out there that's got their act together! Appreciate the quick service and correct parts shipping. Thanks again.. jP ”
-Jack P.
04/02/2026