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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…

“Amazing! They always have what i need. If they don't have it they don't make it! ”
-Christopher H.
08/13/2026

$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…

“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
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