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Best OverallA universal rubber toilet flapper made for two inch flush valves, with an adjustable frame. It does not fit other valve sizes, so check your flush valve before buying.
A repair kit that replaces a worn fill valve and flapper on a toilet with a three inch flush valve. It does not suit toilets with other flush valve sizes, so measure the opening first.
A repair kit that swaps three worn toilet parts in one purchase. Confirm the flush valve size and the supply line fit before ordering.
A universal replacement flapper with a water-saving dial. It does not suit smaller valves, so measure the flush valve first.
A replacement flapper for select TOTO tanks with a three inch flush valve. Match your tank model against the part numbers it replaces before buying, because it only fits that range.
A flapper and fill valve combo from Toto, for a toilet repair where both parts are worn. The listing leaves out tank fit and flush valve size, so confirm those before ordering.
A smart two-part fix for a running toilet with a matching flush valve and a Fluidmaster fill valve. It fits only the flush valve size it lists.
A replacement flapper and a chrome trip lever from TOTO for repairing select tanks. Few details are listed, so match the part numbers and the tank model before you order.
A simple adjustable rubber flapper for fixing running toilets, with mounting flexibility and a five-year warranty. The flush valve size is not stated.
A genuine Kohler blue flapper with a float. Exact toilet models are not named, so match the part before ordering.
A genuine Kohler flapper for two-piece Class Five toilets across several popular lines. Confirm your tank model, since the part is model-specific.
Popular PickA two-part repair kit for a toilet that runs on or fills slowly, replacing the fill valve and flapper together. Check that your flush valve opening matches the flapper size before ordering.
A genuine Kohler hinge flapper. Exact toilet models are not named, and the material is only called multi.
A genuine Kohler flapper with chain for a long list of older one-piece toilets. It fits only the listed models, so match your model number first.
A three-pack of adjustable Fluidmaster flappers for most two inch flush valves, with a dial for water use. They do not fit three inch valves, so measure the flush valve first.
A red rubber Korky flapper in one piece, made for a common valve size. The listing gives no flush volume or fit list beyond the universal label.
A universal rubber toilet flapper made in the USA for two inch plastic flush valves. It does not cover other valve sizes, and the color field and title disagree.
A red rubber replacement flapper for toilets that use the common wide flush opening. The listing claims easy installation and anti-clogging behavior but shows no steps.
A blue three inch toilet flapper kit listed as a match for a named Gerber model, with a stainless chain and clip hooks. Check your valve size before ordering.
A blue rubber replacement flapper for toilets with a three inch flush valve, listed as compatible with a Gerber model. The listing mentions no hardware or detailed fit guidance.
A model specific repair kit for VorMax toilets, not a universal flapper. Check your toilet line before ordering.
A genuine Kohler shark-fin flapper for a set list of one-piece toilets. It will not fit other brands or models, so confirm your toilet model first.
A replacement toilet flapper with a chain and float for flush valves of one stated size. The listing offers no other valve sizes, so measure the existing opening first.
Two red rubber flappers sized for 2-inch flush valves, worth it once you've confirmed that's your valve size and want a spare in reserve.
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Fluidmaster 502P21 PerforMAX Universal Toilet Flapper 2 InchModel 502P21Fluidmaster 5403 Universal Toilet Flapper 3 InchModel 5403TOTO THU500S Replacement Flapper 3 InchModel THU500SKohler GP85160 Toilet Flapper with Float 2 InchModel GP85160KOHLER GP1078441 Flapper for Two-Piece ToiletsModel GP1078441Fluidmaster K-400H-039 Fill Valve and Flapper Repair KitModel K-400H-039KOHLER K-GP84995 Hinge Toilet Flapper 2 InchModel K-GP84995Kohler GP83064 Flapper for One-Piece ToiletsModel GP83064Fluidmaster 502 Universal Toilet Flapper 3-PackModel 502These 9 toilet flappers are the most searched brands and models among the established products in this category (monthly searches for each brand and model); on a tie, the one with more owner ratings ranks first. Product data comes from public Amazon listings (updated 2 days ago). We do not test products ourselves.
Fluidmaster, Kohler, Korky, Toto, Gerber lead this category among the 12 brands that passed our curation checks.
A listing appears only when it has a recorded price, a minimum customer rating, and enough ratings or monthly sales. Generic and unbranded listings are left out, while every real brand stays, including brands sold only on Amazon. The ones that pass are ordered by how many people search for that brand and model each month; review counts only break ties.
Toilet flappers come with fixed or adjustable closing behavior, and with attachment designs that fit different flush valves. An adjustable version lets you tune when the flapper drops, but neither format solves a mismatch with the valve opening or mounting points. Start by identifying the flush valve inside your tank, since a replacement valve fitted during an earlier repair may differ from the toilet’s original equipment.
Fit determines whether the flapper can sit squarely over the drain opening and pivot freely after the handle is released. With the water supply shut off and the tank drained, compare the existing flapper’s attachment arrangement and the valve opening with the replacement’s dimension drawing. Some flappers attach to side pegs; others use a ring around the overflow tube, so follow the replacement’s mounting instructions. Among the 19 products that list item weight, most fall between 0 and 0.3 pounds, and 0.1 pounds is typical.. Use the opening size and mounting geometry to judge compatibility; weight cannot tell you whether the sealing edge will land in the right place.
Next, match closing behavior to the toilet’s flushing requirements. A flapper that drops too soon can interrupt the flush, while one that stays raised too long can release unnecessary water. For an adjustable design, look for instructions that explain how to set it for your toilet, since the setting and tank water level affect the water released. The handle linkage also matters: the chain needs enough slack for the flapper to close fully, yet must lift it clear when the handle moves. Compare the replacement’s chain length and attachment options with your existing lever arrangement.
Before ordering, inspect the valve’s sealing surface for deposits, damage or distortion; a new flapper may not cure leakage caused by a damaged seat. In listings marked Rubber or Plastic, identify the material of the flexible sealing edge, because the label may describe another component. If you use an in-tank cleaning product, read the flapper maker’s care instructions for permitted chemicals, as some treatments can shorten seal life. Confirm whether the chain, hook and any required mounting adapter are supplied or sold separately.
How we list products: every listing here has a recorded price, a minimum customer rating and enough ratings or monthly sales. Generic and unbranded listings are left out; every real brand stays, including brands sold only on Amazon. Products are ordered by monthly searches for their brand and model on every page.Editorial policy
