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RIGHT HAND TRIP LEVER
Manufacturer Resources
Product Specs
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- right hand trip
- Parts and Accessories Type:
- Trip Lever
- Department:
- Plumbing
- Application:
- Toilet
TOTO THU399#CP-A – Frequently Asked Questions
1) What is the TOTO THU399 and what does it do on a toilet?
It's a replacement trip lever, the handle assembly that mounts through the tank and actuates the flush valve on a TOTO toilet. The part number to order is THU399#CP-A. It's a repair part only, so it does not include a tank, flush valve, or fill valve.
2) Is the TOTO THU399 a universal trip lever or does it only fit TOTO tanks?
Treat it as a TOTO service part. THU399#CP-A is TOTO's own trip lever for its toilets, and the tank hole location, lever arm length, and flapper chain hookup are matched to TOTO tanks. Match the THU number called out for your specific toilet model before ordering rather than substituting a generic hardware store lever.
3) Do I need any tools or extra parts to swap a TOTO trip lever?
No extra parts are supplied or needed in most cases. The lever threads into the tank through the existing hole and is held by a nut on the inside, which on TOTO tanks is reverse threaded, so it loosens clockwise from inside the tank. Unclip the flapper chain from the old arm, shut off and drain the tank, swap the lever, then reattach the chain with the same slack you had before.
4) For a property with several TOTO toilets, can I stock one trip lever part number for all of them?
Not reliably. TOTO uses a range of THU trip lever part numbers keyed to tank style and handle position, and THU399#CP-A is one of them. If your buildings run the same toilet model throughout, stocking that single number works; mixed models need the lever that matches each tank. Pull the model number off the inside of the tank lid or the back of the bowl to confirm which one you need.
5) My TOTO toilet handle turns but nothing flushes. Will a new trip lever fix it?
Usually yes if the lever arm is cracked, the handle is spinning free, or the mounting nut has stripped. THU399#CP-A replaces that whole handle and arm assembly. If the lever moves the chain normally and the tank still won't empty, the problem is downstream at the flapper or flush valve seal instead, and a new lever won't help.
How fast can I get the TOTO THU399#CP-A 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 THU399#CP-A come with a warranty?
Absolutely. The TOTO THU399#CP-A 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 THU399#CP-A?
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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