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Tank Conversion Kit 1B1X for Kohler K-84499

Plastic flushvalve & ballcock with rubber flapper gasket and supply tube.

chat iconWHAT OUR CUSTOMERS SAY…

“Sent Noel’s plumbing and image of what was needed, not being able to find it. They had it sent to me within a week and fitment was perfect. 👍 ”
-Lorenzo H.
03/12/2026

$121.47

 

The 1B1X Tank Conversion Kit (Part #K-84499) is a kit engineered specifically to completely overhaul the internal mechanics of older, “low boy” style one-piece Kohler toilets.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, asknoel@noelsplumbingsupply.com, or via the text widget on this screen.

SKU: 12760 Category: Tag:

Stop dealing with a constantly running toilet and restore its original, high-performance flush with the 1B1X Tank Conversion Kit (K-84499). Specially designed for older, low-profile, one-piece toilets, this complete rebuild package includes every internal mechanism needed to refresh your toilet tank.

 

K-84499

 

  • Replaces all vital internal tank mechanisms at once to ensure seamlessly synchronized performance.
  • Resolves common issues such as slow tank filling, continuous running water, and faulty seals.
  • Tailored for quick, trouble-free installation by professional plumbers or DIY homeowners alike.

Common questions about this product

Will this item replace the original OEM part? chevron-icon

Yes, this aftermarket part will replace your OEM 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…

“These people were extremely helpful in taking me through replacing a 25 year old hard water frozen cartridge on my Philrich sink faucet. They were able to identify the correct part I needed from a photo I sent (I had it figured out wrong). I was pleasantly surprised they had an obscure part like this, but they also told me how to extract the old one when I couldn’t get it out. They said to unscrew it after I had concluded from YouTube the old cartridge was supposed to just slide out. It threaded out as they said and saved me buying a cartridge extractor and a hernia. The whole experience has been excellent. ”
-Pete L.
03/10/2026
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