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TANK LID - ST405M
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 TCU405CR#01 – Frequently Asked Questions
1) What toilet does the TOTO TCU405CR#01 tank lid fit?
The TCU405CR#01 is the replacement tank lid for the TOTO Promenade II two-piece toilet, and it is the lid that goes with the ST405M tank. If the tank on your fixture is a different TOTO model number, this lid will not seat correctly, since TOTO lids are matched to a specific tank casting rather than being universal.
2) I cracked the lid on my Promenade II toilet. Is this just the lid or does it come with the tank?
Lid only. The TCU405CR#01 is the porcelain cover for the Promenade II tank, sold as a standalone replacement part. No tank, no flush valve, no fill valve, no trim comes with it. Property managers replacing a dropped or cracked cover only need this piece.
3) What does the #01 suffix mean on TOTO part number TCU405CR#01?
On TOTO part numbers the code after the hash is the finish. #01 is TOTO's Cotton White. Order the suffix that matches the rest of the fixture, because a lid in a different finish will read as an obvious mismatch against the tank and bowl.
4) Is a Promenade II tank lid interchangeable with the original Promenade lid?
Treat them as separate parts. The TCU405CR#01 is specified for the Promenade II and the ST405M tank; TOTO changed tank castings between generations, so a lid from an earlier Promenade tank is not a safe substitute. Read the model number stamped inside your existing tank before ordering.
5) We standardize on TOTO toilets across a property. Can I stock one tank lid for all of them?
No. Tank lids are model-specific, and the TCU405CR#01 covers the Promenade II only. If your buildings mix TOTO series, you need the lid that matches each tank, so build your spares list off the tank model numbers rather than the brand.
6) Do I need any hardware or sealant to install a TOTO tank lid?
No hardware. The Promenade II lid sets loose onto the rim of the tank under its own weight, so installation is lifting it into place. Nothing is fastened, glued, or gasketed. That also means it is a one-minute swap for maintenance staff, with no water shutoff required.
How fast can I get the TOTO TCU405CR#01 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 TCU405CR#01 come with a warranty?
Absolutely. The TOTO TCU405CR#01 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 TCU405CR#01?
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 TCU405CR#01 from ZenSupply?
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