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Internet # 339176159

Model # 3020CM

Store SKU # 1015034842

New

Fit-All Universal 2 in. and 3 in. Premium Toilet Flapper

$15.98
  • Easily converts to fit both standard 2" and large 3" flush valves
  • Fixes leaking and worn-out flappers, running toilets double flush
  • Fits all major toilet brands
  • View More Details

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Product Details

About This Product

Didn't measure, The Korky Fit-All Universal 2 in. and 3 in. Premium Toilet Flapper is designed to fit both flush valve sizes, so you don't have to worry about measuring. It quickly converts from a large 3 in. to a standard 2 in. and fits more toilet models than any flapper in the marketplace. The adjustable design lets you match your toilet's original performance, while the exclusive long-lasting red rubber resists chlorine and harsh chemicals. The universal flapper fits all major brands like American Standard, Kohler, Mansfield, TOTO, and all others. Easy to install, the Fit-All Flapper includes (1) Large 3 in. Assembly, (1) Standard 2 in. Assembly, (1) Leg adapter for specific brands, (1) Stainless Steel Chain, and (1) Set of Instructions.

Highlights

  • Easily converts in seconds to fit both standard 2 in. and large 3 in. flush valves
  • Fixes: leaking and worn-out flappers, running toilets, and toilets that flush twice
  • Fits all major toilet brands like American standard, kohler, mansfield, toto, and all others
  • Exclusive longest-lasting red rubber resists chlorine
  • The preferred flapper brand of plumbing pros since 1954
  • Includes: (1) large 3 in. flapper assembly, (1) standard 2 in. components, (1) leg adaptor for specific models, (1) stainless steel chain, and (1) set of instructions
  • Return Policy

Product Information

Internet # 339176159

Model # 3020CM

Store SKU # 1015034842

Additional Resources

Shop All Korky
From the Manufacturer

Specifications

Dimensions: H 7.5 in, W 6 in, D 3 in

Dimensions

Product Depth (in.)

3 in

Product Height (in.)

7.5 in

Product Width (in.)

6 in

Details

Color/Finish Family

Red

Features

Universal Fit

Included

Chain Included

Material

Rubber

Pack Size

1

Plumbing Part Type

Toilet Flapper

Returnable

90-Day

Toilet Replacement Parts Type

Toilet Flapper

Warranty / Certifications

Manufacturer Warranty

5 year

Questions & Answers

How does this fit on a Mansfield toilet flapper ?
ByJun 6, 2026
1 Answer | 
Answer This Question

Thank you for contacting Korky products. I do have further questions for you, so if you can contact us direct. 1800-528-3553 Thank you!

By|Jun 8, 2026


    Viewing 1-1 of 1

    Customer Reviews

    4 out of 5

    • 4 out of 28 reviews
    • 100% recommend this product
    Filter by:
    Showing 1-10 of 28 reviews
    Korky Universal Toilet Flapper
    Great product. Korky has always been my go-to manufacturer for toilet products, and this one is excellent because it fits both 2" (Standard) and 3" (Large) openings. I recently had to go back a second time to Home Depot for a flapper, as I mistakenly thought I had a Standard opening, but in fact had the Large- had I purchased this product initially, then I'd have saved myself the trip. The package includes everything needed for replacement/installation, and even includes a complete, and easy to understand instruction set. Installation is easy and straighforward- about a 5-min operation. Topping that all off, this product has a five-year warranty (make sure and keep your receipt).
    by
    • Recommended
    Will do the job it appears.
    I asked for this product since I live in New Mexico and we have to be careful with our water. A dripping, running or leaking toilet can become very costly very quickly. So it is good to have a replacement flapper on hand. I have noticed over the years that these toilet maintenance products vary vastly in quality. I have learned to buy the better stuff and this seems to qualify.
    by
    • Recommended
    Very handy item to keep on the shelf with the price of water nowadays
    This is the handiest item to install; it is all assembled with all the pieces to fit a three-inch flush hole and by removing a few pieces that just snap off it will work with a two-inch flush hole with everything to mount the valve for either size. The rubber seal is firm but flexible enough to make a very good seal with no drips or leaks. The flush chain is very strong and long enough for any toilet tank. It took about fifteen minutes to install from start to turn the water back on.
    by
    • Recommended
    Fit-All Fits All.
    The Korky Fit-All replacement for your toilet’s flapper takes the guesswork out of purchasing a replacement flapper. Installation is simple once you commit to swapping the parts. It’s really not that difficult: Pull off the cone (takes a wee bit of force -it’s not going to break), change the flapper seal, remove and re-install the mounting arms at the proper width, and then install the flapper and flush chain. There is also an adjustment on the cone that involves twisting the cone to the proper setting for your brand. I got to admit, I was skeptic at first, but it works and once works nicely. Seals perfectly! You may need to adjust your flushing routine, holding the handle down a couple of seconds while the flapper balances in an upright position to allow complete emptying of your toilet tank, but that’s a minimal sacrifice. By the way, the flapper I replaced was a Korky and has probably been on the job for over 30 years.
    by
    Response from Korky Toilet GeniusJul 23, 2026
    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. Korky
    • Recommended
    1 found this review helpful
    Very Clever Design for a Toilet Repair Part
    I am a loyal Korky customer, and have always used the 2001 2" flappers. This is a great flapper to keep in your service kit since it fits either 2" or 3" Flush Valve. I had an ancient Eljer toilet that the flapper needed replacement so out comes the Korky. The adjustable flapper is cleverly designed- you change the red seal and dome depending on the required size. The forks that attach to the base of the valve can be snapped into place for either 2 or 3" spacing. I'll still buy the 2001 3 pacs, but it is great to have the universal flapper if I need it for a repair.
    by
    • Recommended
    Multi use Flapper that works.
    I received the product in good condition. Upon unpacking I laid out the instructions and noticed that this flapper comes preset with the 3-in cone and seal. For my toilet I needed to convert this to a 2 in which was relatively simple to do by removing the plastic valve swapping out the 2-in ring in place of the 3-in Ring and using the small 2-in half cone. It has a list of available toilet manufacturers and models. You can adjust the dial on the bottom of that cone to regulate flow as needed. The reason I chose this was that I had a toilet that would leak water in to the bowl about once an hour so it wasn't a drastic amount but it needed to be changed out for efficiency. As mine is an older toilet it was only listed under the 3-in configuration table, so I didn't bother adjusting any of the dial settings on the cone but just left it as is. The width of the arms have different setting to accommodate wider flapper stems. I installed and after a few test runs it functions perfectly. I think that this is a viable option for fixes that do not requirs changing out the internal components.
    by
    • Recommended
    Works awsome and easy set up
    by
    • Verified Purchase
    This customer chose to rate the product and not provide text.
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    • Verified Purchase
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    • Verified Purchase
    Showing 1-10 of 28 reviews

    Compare Key Features

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    Product Snapshot

    Ideal for customers who want universal fit and chemical resistance, ensuring long-lasting performance.
    Ideal for TOTO toilet owners seeking a reliable, adjustable flapper with a 5-year warranty for leak-free performance.
    Ideal for water-conscious homeowners seeking adjustable flush volume and a long-lasting silicone seal, ensuring optimal water savings.
    Ideal for American Standard toilets, this durable rubber flapper ensures reliable performance and easy installation.

    Flush Volume

    Adjustable dial for flush performance and water savings

    Adjustability

    Seal Quality

    Fixes leaking, long-lasting
    Tight seal
    Long lasting silicone seal
    Durable and long-lasting

    Chemical Resistance

    Universal Fit