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…

“This place is amazing. I live in San Antonio, Texas and there are a few plumbing stores with vintage parts but they never have what I need and the ordering process takes them weeks. I found a rare part at Noels by reverse image search but they will do it for you. I've used them 3 times. Their agents are knowledgable and polite. They will find you the same part or the after market part and get you going on your way. They have 2-3 day shipping. My house was built in the 30's and they know exactly what the after market parts are that I need. I save money and time going to them. I sure wish they were in San Antonio! I will just go directly to Noel's next time - they are LEGENDS! ”

-BP W.

06/21/2026

$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…

“Stop in Noel's , the counter man was very friendly, knowledgeable, and handled me the part I needed with in 2 minutes. I also got some professional advice. I will buy all of my plumbing needs here in the future. We home owners need business like this . ”

-Eric O.

02/29/2020