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Korky Ultra Standard 2-inch Universal Rubber Toilet Flapper (100)

4.5 stars out of 581 reviews
(4.5)|
581 ratings

Key item features

  • Universal Fit: The most universal standard 2-inch flapper, compatible with all popular 2-inch toilet models.
  • Durable Material: Made from exclusive longest-lasting red rubber that resists chlorine, bacteria, and various water types.
  • Adjustable Settings: Flapper adjusts to match original toilet settings, reducing water waste by controlling the amount of water flushed.
  • Wide Compatibility: Fits tank sizes for 1.28, 1.6, 3.5, and 5 gallons per flush (gpf) toilets, including models from American Standard, Kohler, and TOTO.
  • Professional Choice: Preferred by plumbing professionals since 1954 for its reliability and performance.
  • Easy Installation: Includes one flapper and one stainless-steel chain, designed for a tight seal and simple installation.
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Customer ratings & reviews

4.5 out of 5 stars
stars581 ratings157 reviews
How item rating is calculated
  1. 5 stars76% (443)
  2. 4 stars10% (58)
  3. 3 stars5% (31)
  4. 2 stars2% (11)
  5. 1 star7% (38)

Reviews summary

Pros

  • : Installation typically takes under 5 minutes.
  • : Made with high-quality craftsmanship.
  • : Offered at an affordable cost.
  • : Accommodates most standard toilet sizes.

Neutral

  • : Can be effective at stopping leaks, but may not fit tightly or consistently.

Cons

  • : Chain length may not be adjustable or suitable for all users.
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Showing 1-3 of 157 reviews

Mar 31, 2026
Jeff
Top Reviewer
Item details
Size: 2"
5 out of 5 stars review

Verified Purchase

Perfect fit and replacement

My old flapper was letting water through and the toilet would run every few minutes, which made my water bill shoot up sky high. Found this flapper at the local Walmart and it fits perfectly. The toilet immediately stopped the extra water loss with the excellent seal provided by the flapper. Now water only goes out when I flush.

Helpful?73T5B38WA15538470903
Aug 28, 2025
Tim
Top Reviewer
Item details
Size: 2"
5 out of 5 stars review

Verified Purchase

Great little flapper

I live in a water controlled mobile home park. They set the rate as high as the state will allow so I buy these in bulk so I am never without. Easy peasy swap out once I hear that toilet kick on without flushing I swap it out. It's so easy I've done it at 3 am.

Helpful?73T5B38WA15538470903
Dec 29, 2025
Walmart customer
Top Reviewer
Item details
Size: 2"
5 out of 5 stars review

Verified Purchase

Simple Fix!

After all these years dealing with a running toilet, I can't believe that all I needed to do was replace this little thing! Had a friend tell me that I would have to replace the whole works inside the tank. I called a plumber who said he would do it for $100! So, I went online and researched it. Low and behold, a Youtube guy said that all I needed was a flapper. Installed it myself in 2 minutes.

Helpful?73T5B38WA15538470903
reply from Korky Toilet Genius

Thanks for taking the time to write a review. We are glad to hear your Korky is working well for you. If you have additional questions, our customer service team is here and happy to help. Please dial 262-763-2434 or email us at sales@lavelle.com. We are available Monday through Friday, 7:30AM to 5:00 PM CST.