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Kohler K-GP77759 Pressure Balance Mixer Cap

Black plastic cartridge with brass handle connection with metal plate and stainless screws with black rubber seals.
Kohler K-GP77759 Pressure Balance Mixer Cap - Image 2

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“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

$58.47

 

The Kohler K-GP77759 (also listed as GP77759) is a genuine replacement mixer cap kit designed for Kohler Rite-Temp pressure-balancing shower valves. It is primarily used to fix leaking shower handles, ensure smooth handle rotation, and provide temperature safety through an adjustable limit stop.

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: 10124A Category: Tag:

Kohler Mixer Cap for 1/2″ Pressure Balance Shower Valve

 

K-GP77759

 

  • Designed for use with Kohler K-304 and K-11748 1/2″ pressure-balance valves. It works with most Kohler Rite-Temp shower trim.
  • Temperature limit stop provides temperature control for safety while allowing maximum water temperature
  • Designed to maintain even water temperature and prevent pressure fluctuations during use.

 

Related Documents

 

GP800820 Service Kit Instructions

 

Customer submitted images. 

 

Old shower valve for Kohler.

 

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…

“I was very happy with Noel’s Plumbing. I was searching for a fairly rare part and saw it listed on their website. After placing my order, I was informed that the item was actually on backorder. Noel’s Plumbing was upfront and honest right away, letting me know it might take some time to arrive. Throughout the wait, they consistently kept me updated, which I really appreciated. When the part finally came in, they shipped it out immediately. It arrived exactly as described and was precisely what I needed. Excellent communication, honesty, and follow-through. Thank you, Noel’s Plumbing! ”
-Dave F.
04/04/2026