TOTO TSU803.13-A Fill Valve for Aquia IV, Aquia IV Arc and Aquia IV Cube Toilets
Frequently Asked Questions
• What if my order arrives damaged?
While we take great care in the packaging and handling of orders, we ask that customers inspect all shipments within 48 hours of delivery, and in the rare event that your order arrives damaged, please send us an email with a photo showing the damages (so we can file a claim with the carrier), and let us know whether you prefer a free replacement or a refund.
• Why do you ask for phone numbers during checkout?
Some shipping carriers, especially those handling freight, require a phone number to coordinate your delivery. We respect your privacy and guarantee that any information you provide will never be shared with third parties, except for shipping purposes.
The TOTO TSU803.13-A Fill Valve is a genuine TOTO replacement part designed for select Aquia IV dual-flush toilets. Installed inside the toilet tank, the valve controls incoming water and refills the tank after each flush, helping restore dependable operation when the original fill valve becomes worn, damaged, or no longer shuts off properly.
The TSU803.13-A is compatible with select Aquia IV, Aquia IV Arc, and Aquia IV Cube toilet configurations that use ST436EMNA, ST436EMNR, ST446EMNA, or ST448EMNA tanks. This replacement includes the fill valve only and does not include the flush valve, tank-to-bowl hardware, supply line, push button, trip lever, or other tank components. Confirm the complete toilet or tank model before ordering to ensure proper compatibility.
TOTO TSU803.13-A Fill Valve UPC Code: 739268427044.