3/4" Thermostatic Cartridge for Kohler 78913

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Bright brass cartridge with metal c clip black rubber o-rings stainless screen and copper thermo.

3/4" Thermostatic Cartridge for Kohler 78913 - Image 2

3/4" Thermostatic Cartridge for Kohler 78913 - Image 3

3/4" Thermostatic Cartridge for Kohler 78913 - Image 4

WHAT 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

$306.47

The Kohler 78913 (often listed as K-78913) is a 3/4-inch high-flow thermostatic valve cartridge. It is primarily designed for Kohler MasterShower systems and K-400/K-401 rough-in valves manufactured prior to 2006, ensuring precise water temperature control and preventing scalding.

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.

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Ensure a safe, comfortable, and reliable shower experience with the genuine Kohler 78913 Thermostatic Valve Cartridge. A replacement for 3/4-inch rough-in valves (including models K400, K-400-K and K-401-K), this high-flow cartridge restores smooth, dependable water regulation to your luxury bath or shower system.

78913

It regulates both water temperature and flow concurrently).
3/4-inch valve profile engineered for high-flow rate luxury shower applications manufactured prior to 2006.
Built with high-quality brass components and a specialized memory-alloy spiral temperature sensing probe.

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Kohler K-400 Series Thermostatic Mixing Valve Specs

Common questions about this product

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.

Yes, this aftermarket part will replace your OEM part.

WHAT OUR CUSTOMERS SAY…

“Do you need a vintage plumbing part and nobody seems to be able to find it in your area? Save yourself time and hassle and go to Noel's Plumbing website. You can text them a photo of the part and they will find it in minutes and give you the link to order it, all at a competitive price. My plumbers seem incapable of doing this and hand the job off to me. What can you do? But Noel's always has the 1930s parts I need or the aftermarket part that will get the job done. If I need it fast I can get it in 2-3 days from them and they know exactly what they are doing. It's a good old-fashioned plumbing store with all the parts you could possibly need and people who know how to get them. The service is top level. The staff pick up the phone after one or two rings. They are polite and KNOWLEDGABLE. I'm so tired of dealing with folks who can't find a chicken in a hen house. LOL. ”

-Bry W.

06/23/2026