TOTO THU500S Flapper and Trip Lever Kit
- 3 inch flush valve replacement flapper, select tanks
- Red flapper, 1 pack
- Chrome trip lever THU068#CP for the ST743S tank
Last refreshed Sep 28, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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.
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ASIN: B0CDCJQ8GVModel: THU500SCategory: Toilet Flappers
Overview
Not a universal flapper, this TOTO kit pairs the THU500S red flapper, made for select tanks with a three inch flush valve, with a chrome THU068#CP trip lever listed for the ST743S.
A brand-matched repair in one order, a fresh flapper plus a matching chrome lever, is the reason to consider it. The limit is information: tank compatibility is given only as select tanks, and only the lever names a model.
Who it's for
Homeowners and plumbers replacing a worn flapper and lever on a matching tank get both parts in one listing. Fit is stated only for select tanks, so confirm your own model before ordering.
Pros and cons
- Two repair parts in one order
- Chrome finish on the trip lever
- Brand-matched TOTO part numbers
- Fit limited to select tanks
- Only the lever names a tank model
- Materials and dimensions not described
Performance notes
A flapper seals the flush valve opening, so a close match to the valve size decides how well the tank holds water. The trip lever is the handle that starts the flush. Rubber type and hardness are not described, so lifespan cannot be judged from the listing.
Specifications
| Brand | Toto |
|---|---|
| Model | THU500S |
| Dimensions & fit | |
| Flush valve size | 3 inches |
| Construction & materials | |
| Flapper color | Red |
| Trip lever finish | Chrome |
| Compatibility & installation | |
| Lever tank model | ST743S |
| Included components | |
| Number Of Packs | 1 |
| Other details | |
| Flapper part | THU500S |
| Trip lever part | THU068#CP |
| Product 1 | Size: 3 Inch.3 inch sealing surface |
| Product 2 | Superior quality backed by over 90 years of experience creates many benefits |
Frequently asked questions
What is included with the TOTO THU500S?
Per the title, one red THU500S flapper and a THU068#CP chrome trip lever. No chain, bolts or other hardware are mentioned.
Will the TOTO THU500S fit my toilet?
The listing says select tanks with a 3 inch flush valve. Check your tank model and valve size, since the lever is the only part tied to a named tank, the ST743S.
Is the THU500S a universal flapper?
No. It is described for select 3 inch flush valve tanks, not for every toilet.