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ST786 TANK LID ASSEMBLY
Manufacturer Resources
Product Specs
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- Tank Lid
- Parts and Accessories Type:
- Tank Lid
- Department:
- Plumbing
- Application:
- Toilet
TOTO TCU786CR#12 – Frequently Asked Questions
1) What exactly is the TOTO TCU786CR#12 part, and does it include the flush handle or any internal tank parts?
It's the tank lid assembly for the TOTO ST786 toilet tank, a replacement cover for the tank only. It is not a fill valve, flush valve, or trim kit, so nothing inside the tank comes with it. If you cracked or chipped the ceramic lid on an ST786 tank, this is the piece that replaces it.
2) Will the ST786 tank lid fit my other TOTO toilets, or only the ST786 tank?
Only the ST786 tank. TOTO tank lids are model-specific castings, and this one is built for the ST786. Match the model number molded or stamped inside your existing tank before you order a lid, because a lid from a different TOTO tank will not seat correctly even if the tank looks the same size from the outside.
3) I manage a building with several TOTO toilets and need a replacement lid. How do I confirm the ST786 is the right tank?
Lift the existing lid and look inside the tank wall, usually near the back or on the underside of the lid itself, for the tank model number. If it reads ST786, the TCU786CR#12 lid assembly is the correct replacement. Ordering by the bowl or the one-piece model name alone gets people the wrong lid more often than anything else, since one tank casting can serve several complete toilet models.
4) What is the #12 at the end of TCU786CR#12?
In TOTO's part numbering, the code after the # is the finish. On the TCU786CR#12 tank lid that suffix identifies the colored finish variant, so the lid matches a tank ordered in that same TOTO color code. If your tank is a different TOTO color, you need the lid in that color's suffix, not this one.
5) Can I order just the tank lid, or do I have to buy a whole new TOTO tank?
Just the lid. TOTO sells the ST786 lid as its own replacement part, so a chipped or broken cover doesn't force you into a new tank or a new toilet. Handy for hotels, schools, and multifamily where a dropped lid is routine damage and the rest of the fixture is fine.
6) Does a TOTO tank lid need any hardware or sealant to install?
No. A tank lid sets into the rim of the tank under its own weight, with no fasteners, gasket, or sealant. Set it down square and check that it sits flat all the way around; a lid that rocks is usually a sign the tank model doesn't match the lid.
How fast can I get the TOTO TCU786CR#12 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the TOTO TCU786CR#12 come with a warranty?
Absolutely. The TOTO TCU786CR#12 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the TOTO TCU786CR#12?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
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