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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…

“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

$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…

“Hey these guys are awesome! If you need a part for a fixture they have it send a picture and they can tell you what it is, they know their stuff, they have the weird obscure things you can't find unless you get a whole trim kit or whatever. Worth the trip and the money. They save you tons of time definitely visit ”
-Justin H.
06/05/2026
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