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Kohler K-1237539 Fill Valve Service Kit

Black plastic fill valave with yellow cap white plastic nuts and black rubber washers.
Kohler K-1237539 Fill Valve Service Kit - 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

$27.17

 

The Kohler K-1237539 is a genuine fill valve service kit used for repairing specific Kohler one-piece toilets.

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: 54539 Category: Tag:

Kohler Fill Valve 

 

K-1237539

 

  • The fill valve is a critical component in a toilet tank that controls the flow of water to refill the tank after flushing. This service kit allows the user to repair the existing fill valve by replacing internal components like the diaphragm and O-ring.
  • This genuine Kohler part is specifically designed for use with certain one-piece toilets, including the San Souci K-5172, K-4007, K-4000, and K-8687 models. It is compatible with various Kohler toilets produced between 1990 and 2001.

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…

“Hello, I was in the shop on Tuesday and was greeted and helped by a gentleman named Jackson. He was extremely helpful, friendly and it was really a pleasure to see a young man working in this industry with knowledge and kindness. I run my my own small business and was a first time customer at Noel’s, being greeted and cared for in that manner will definitely bring about my return. I want to send me sincerest gratitude to your team. Thanks again! ”
-Jimmy M.
10/21/2022