TOTO ST403E Promenade II 1.28 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$170.36
TOTO ST403E Promenade II 1.28 GPF Toilet Tank

TOTO ST403E Promenade II 1.28 GPF Toilet Tank

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Model: ST403E#11
From the Promenade II Collection
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$170.36
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The TOTO Promenade II 1.28 GPF Toilet Tank is designed for use with the Promenade II bowl. The Promenade II tank includes a tank to bowl gasket, tank to bowl hardware, and toilet bolt caps. The tank features TOTO's Tornado Flush, a hole-free rim design with dual-nozzles that creates a centrifugal washing action that assists in rinsing the bowl more efficiently. This version of the tank comes equipped with a decorative left-hand chrome trip lever. The Promenade II meets the standards for EPA WaterSense, and California's CEC and CALGreen requirements. Additional items needed for installation and use must be purchased separately: toilet bowl, wax ring, toilet mounting bolts, water supply lines, and toilet seat. The Promenade II ST403E tank can be used on the following bowls: C404CUFG and C404CUF.

Manufacturer Resources

Spec Sheet

Product Specs

Product Group:
Washroom/Bath Accessories
Product Subgroup:
Parts and Accessories
Battery Included:
No
CALGreen:
Yes
Flush Valve Size:
3"
Flush lever Location:
Left
Product Type:
Tanks
WaterSense:
Yes
Collection:
Promenade II
Gallons Per Flush (GPF):
1.28
Product Material:
Vitreous China
Department:
Plumbing
Parts and Accessories Type:
Trip Lever
Application:
Toilet

TOTO ST403E#11 – Frequently Asked Questions

1) Which TOTO bowls will the ST403E Promenade II tank fit?
The ST403E tank mounts to the Promenade II bowls C404CUFG and C404CUF. It is not a universal tank, so if your bowl is a different model the tank will not bolt up or seal correctly.
2) Does the TOTO ST403E tank come with the tank to bowl gasket and bolts?
Yes. The ST403E ships with the tank to bowl gasket, the tank to bowl mounting hardware, and the toilet bolt caps, so you are not sourcing those separately.
3) What else do I need to buy to complete a Promenade II toilet install?
The tank is only half the fixture. You still need the toilet bowl (C404CUF or C404CUFG), a wax ring, floor mounting bolts, a water supply line, and a toilet seat. None of those come with the ST403E tank.
4) Which side is the flush handle on the TOTO ST403E tank?
Left-hand. The ST403E comes with a decorative chrome trip lever mounted on the left side of the tank. If your existing installation has the handle on the right, or a tight wall or vanity on the left, this is the wrong version for that opening.
5) Will a 1.28 GPF TOTO Promenade II tank meet California water rules for a multi-family remodel?
It flushes 1.28 gallons and carries EPA WaterSense along with California CEC and CALGreen compliance, which is what California specs call for on new and replacement toilets.
6) What flush valve size is in the Promenade II ST403E tank, and does that matter for replacement flappers?
It uses a 3 inch flush valve. When you service it, match flapper and seal parts to a 3 inch valve rather than the older 2 inch size, or the tank will leak past the seat.
7) What color options does the TOTO ST403E Promenade II tank come in, and how do I match an existing bowl?
Five colors: Cotton White (#01), Bone (#03), Colonial White (#11), Sedona Beige (#12), and Ebony (#51). TOTO colors are keyed by that suffix, so order the tank with the same suffix as the bowl already installed to get a match across the fixture.
8) Can I buy just the tank if a Promenade II toilet tank cracked, instead of the whole toilet?
Yes, that is exactly what the ST403E is for. It is a vitreous china replacement tank for the Promenade II, supplied with the gasket, tank to bowl hardware, and bolt caps, so a cracked tank over a sound C404CUF or C404CUFG bowl can be swapped without replacing the bowl.
9) Is the Promenade II tank electronic or does it need batteries?
No batteries and no power. The Promenade II ST403E is a straight gravity tank with a manual chrome trip lever, so there is nothing electrical to rough in.
10) How does Tornado Flush in the TOTO Promenade II tank affect bowl cleaning in high-traffic restrooms?
The Promenade II uses TOTO's Tornado Flush, a hole-free rim with dual nozzles that drives a centrifugal rinse around the bowl. Because there is no rim hole row to scale over, the flush path stays clearer than a conventional rim-hole bowl, which is the appeal for property managers maintaining a lot of units on 1.28 gallons per flush.
How fast can I get the TOTO ST403E#11 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 ST403E#11 come with a warranty?
Absolutely. The TOTO ST403E#11 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 ST403E#11?
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 ST403E#11 from ZenSupply?
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