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83143 Toilet Fill Valve Seal Replacement Part – Compatible with Kohler 83143, Fluidmaster 242, 400, 747 – Durable Rubber Diaphragm Seal for Toilet Tank Fill Valve (2-Pack)

4.5 (1) Write Review
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$8.99

$ 4 .99 $4.99

In Stock
  • 1.Universal Compatibility: Specifically designed for Kohler 83143 and compatible with Fluidmaster 242, 400, 747 toilet fill valves, ensuring a precise fit without the need for full valve replacement.
  • 2.Premium Durability: Crafted from high-grade, corrosion-resistant rubber to withstand constant water exposure, prevent leaks, and extend the lifespan of your toilet fill valve system.
  • 3.Effortless Installation: DIY-friendly design allows quick replacement in minutes—simply remove the old seal and insert the new one, no professional tools or expertise required.
  • 4.Water-Saving Solution: Forms a tight, reliable seal to eliminate tank leaks and running water, reducing water waste and helping lower your utility bills.
  • 5.Value Pack & Long-Lasting Performance: Includes 2 seals for future replacements or multiple toilets; engineered for consistent performance, ensuring every flush is efficient and hassle-free.


Product Description

83143 Toilet Fill Valve Seal

83143 Toilet Fill Valve Seal

Upgrade your toilet’s performance with the Zanfyxil 83143 Toilet Fill Valve Seal Replacement Part, a reliable solution designed to restore your toilet tank’s functionality. This precision-engineered seal is compatible with Kohler 83143 and popular Fluidmaster models 242, 400, and 747, making it an ideal choice for repairing common fill valve leaks without costly replacements.


Richard A. Tait
Reviewed in the United States on April 28, 2025
A few months ago I noticed that the toilet in the master bathroom of my house was making a squeak as the water in the tank was almost up to the fill line. It got noticeably louder and louder until I decided to change the fill valve. It was an easy enough job and I thought nothing of it until another toilet in the house started to make the same noise. I was getting ready to change the fill valve again when I realized that I couldn't shut the water to the toilet off because the lock off valve had gone bad. I couldn't tackle that problem (I need special tools) so I started wondering if I could change the washer in the fill valve. I did a search on YouTube and found that I was in luck. I have Fluidmaster 400 fill valves and the washer in them is super easy to change. I know what you are thinking: But these cost the same as the entire fill valve does. That is true, however, hear me out. This price gets you two washers. Each washer takes seconds to change with no tools necessary and you really don't even need to turn the water off to do the job. And of course this serves two fill valves. For me, that is a win-win situation. It is a bit pricey, but for the convenience and the lack of trash to dispose of when I'm done, I think this is a good investment.