You may also like
CHINA LID FOR CST646E
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 TCU646CRE#51 – Frequently Asked Questions
1) Which TOTO toilet does the TCU646CRE#51 china tank lid fit?
The TCU646CRE#51 is the vitreous china tank lid for the TOTO CST646E toilet. It is a replacement lid only, not a tank, so it has to go on a CST646E tank to seat correctly.
2) My TOTO tank lid is cracked. Do I have to replace the whole toilet tank?
No. A cracked lid alone is a parts replacement. For a CST646E, order the TCU646CRE#51 china lid and the existing tank stays in place. Lids are not interchangeable across TOTO models, so match the tank model, not just the look.
3) Does the TOTO TCU646CRE#51 lid come with a trip lever or tank hardware?
It is the china lid by itself. No trip lever, flush valve, fill valve, or tank-to-bowl hardware is part of it. If the flush mechanism is also failing, those are separate TOTO repair parts.
4) What is the #51 on the TOTO TCU646CRE#51 part number?
On TOTO china, the digits after the hash are the color code, so TCU646CRE#51 is the CST646E lid in TOTO's #51 Ebony. Matching that code matters because a lid in a different color code fits the same tank but will not match the bowl.
5) I manage a building with several TOTO toilets. How do I know which lid to order?
Order by the tank model, not the room. Lift the lid and read the model stamped inside the tank; if it reads CST646E, the lid is TCU646CRE in the color code that matches the bowl (#51 for Ebony). Toilets that look identical across a property often carry different tank models, so check each one before you buy a batch.
6) Is any installation or tool work needed to fit this TOTO tank lid?
None. The china lid rests on the tank rim under its own weight, with no screws, gaskets, or sealant. Set it down square and keep it level; vitreous china chips at the edges if it is dropped onto the rim.
How fast can I get the TOTO TCU646CRE#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 TCU646CRE#51 come with a warranty?
Absolutely. The TOTO TCU646CRE#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 TCU646CRE#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 TCU646CRE#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.