
TOTO THU500S Flapper
Score: 75/100
iFealClear Toilet Flapper
Score: 72/100Rankings

The TOTO THU500S is a 3-inch OEM replacement flapper designed exclusively for select TOTO toilets with 3-inch flush valves. It features a polypropylene body with a rubber sealing surface and includes an attached chain for straightforward installation. Ideal for DIY tank maintenance in residential bathrooms to fix leaks or inconsistent flushing.

The iFealClear 3-inch Toilet Flapper is a high-efficiency, water-saving rubber replacement part designed specifically for Gerber 99-788 flush valves in high-efficiency toilets. It features a 3-inch diameter with a single large hole in the cone, blue coloring for visibility, and an adjustable chain with dot markers for easy installation without tools. Ideal for DIY residential bathroom repairs, water conservation upgrades, and quick replacements requiring an exact OEM fit.
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|---|---|---|
3 inchesbest | 3 inchesbest | |
1 countbest | 1 countbest |
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| Attribute | ![]() | ![]() |
|---|---|---|
Material & Durability(2) | ||
Material | Polypropylene/Rubber | Rubber |
Seal Type | Rubber | Standard |
Design & Features(3) | ||
Chain Material | Standard | Nylon/Plastic |
Installation Type | Tool-Free | Tool-free |
Flapper Type | OEM Flapper | Standard Flapper |
Packaging & Support(1) | ||
Warranty Period | 1 Year | None |
Compatibility & Fit(3) | ||
Flush Valve Compatibility | TOTO 3-Inch | Gerber 99-788 |
Toilet Type Compatibility | TOTO Specific | High-Efficiency Toilets (HET) |
GPF Compatibility | null | Water Saving |

Products in the top-left offer the best value (high score, low price).

Product descriptions characterize it as a quiet, dependable OEM upgrade that transforms frustration into reliable performance, emphasizing its adjustability and precise fit for TOTO tanks.
There is no available consumer feedback, testimonials, or forum discussion data for this product.




Parts suppliers and video tutorials emphasize its exact compatibility with Gerber 99-788 valves, ease of tool-free installation, and water-saving benefits for high-efficiency toilets. It is highlighted as a genuine equivalent replacement without variances.
Users commonly praise the product as a quick fix for running toilets with a reliable seal and easy chain adjustment. Recurring complaints are not prominently noted, though phantom flushes are mentioned as a pre-replacement issue.