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CHINA LID FOR CST646U
Manufacturer Resources
Product Specs
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- china lid
- Parts and Accessories Type:
- Tank Lid
- Department:
- Plumbing
- Application:
- Toilet
TOTO TCU646CRU#51 – Frequently Asked Questions
1) Will the Toto TCU646CRU#51 tank lid fit my toilet?
The TCU646CRU#51 is a vitreous china tank lid made specifically for the Toto CST646U toilet. Toto tank lids are model-specific, so it will not drop onto other Toto tanks even if they look similar in size. Confirm the model number stamped inside your existing tank or lid reads CST646U before ordering.
2) Is the Toto TCU646CRU#51 just the lid, or does it include tank trim?
Lid only. The TCU646CRU#51 is the china tank cover for the CST646U, with no flush valve, fill valve, trip lever or gasket included. If your repair involves the flush mechanism, you'll need those parts separately.
3) What does the #51 suffix mean on a Toto tank lid part number?
On Toto part numbers the code after the hash is the finish. TCU646CRU#51 is the single finish this china lid is offered in, so the color is fixed by the part number itself. Match the suffix on your toilet to be sure the lid matches the bowl and tank.
4) My property has several Toto CST646U toilets with cracked tank lids - can I order replacements by part number?
Yes. For a fleet of CST646U toilets, TCU646CRU#51 is the china tank cover to standardize on, and it's sold as a single-part replacement so you can stock a few as spares. Because the lid is tied to the CST646U tank, any CST646U in the building takes the same part.
5) Do I need any tools or hardware to install a Toto china tank lid?
No hardware. A Toto china tank lid like the TCU646CRU#51 sits loose on the rim of the CST646U tank, so installation is lifting the broken lid off and setting the new one in place. There are no screws, bolts or gaskets involved for the cover itself.
How fast can I get the TOTO TCU646CRU#51 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 TCU646CRU#51 come with a warranty?
Absolutely. The TOTO TCU646CRU#51 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 TCU646CRU#51?
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
Why buy the TOTO TCU646CRU#51 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.