Cartridge for Kohler Pressure Balancing Unit GP500520

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“I spent the balance of 3 days looking locallyfor a replacement head for our Kitchen sink...only to find these guys with an exact fit and finish and lower than market pricing...I immediately ordered (an awesome website with smooth cart checkout). 20 minutes later I find a blown out gasket/ring that I was able to replace, and avoid having to replace entire spray head. I text there support line ( while the store was closed!) Requesting the order to be canceled. Within minutes and without hesitation or questions they had refunded my card and canceled the order. They have one of the largest online inventories, notably stocking harder to locate stuff and boasting a separate text line dedicated to recieve customer pics of parts/gear to ensure we are getting exactly what we need. Enough said. Bring your future plumbing problems/needs here and trust you will be taken care of...I know I will... @ Noels, thanks for continuing a tradition of honorable business practice, in a world that is littered with allot less... ”
-John M.
03/14/2026

$48.27

 

The Kohler GP500520 is a replacement Pressure Balancing Unit (PBU) designed for Rite-Temp single-handle shower valves. It maintains a constant water temperature by balancing hot and cold water pressures, preventing sudden “shower shocks” if someone elsewhere in the house flushes a toilet or runs a faucet.

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: 500520 Category: Tags: ,

This component designed to restore consistent water pressure and temperature control in your shower. Engineered for Kohler Rite-Temp 1/2″ single-handle shower valves, this cartridge helps eliminate unexpected bursts of hot or cold water caused by pressure fluctuations.

 

GP500520     A2758     500520

 

  • Fits Kohler GP500520
  • Compatible with K-304 & K-11748
  • Single lever tub & shower faucets

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…

“Thank you for exact part. Just received and replaced and worked out great! ”
-Karl D.
09/05/2025