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🚽 Upgrade your throne with TOTO’s precision fill valve!
The TOTO TSU99A.XR Fill Valve is a durable, adjustable replacement part designed to restore optimal performance to all TOTO toilet tanks. Featuring a standard 7/8 inch inlet connection and a complete installation kit, it ensures easy DIY upgrades with reliable brass and stainless steel construction. Trusted by thousands with a 4.6-star rating, it’s the smart choice for efficient, long-lasting toilet maintenance.









| ASIN | B0C3NB83Y2 |
| Brand | TOTO |
| Brand Name | TOTO |
| Customer Reviews | 4.6 out of 5 stars 729 Reviews |
| Exterior Finish | Brass or Stainless Steel |
| Exterior finish | Brass or Stainless Steel |
| Included Components | Fill Valve |
| Inlet Connection Size | 0.88 Inches |
| Inlet Connection Type | 7/8 inch |
| Inlet connection size | 0.88 Inches |
| Inlet connection type | 7/8 inch |
| Item Dimensions | 10.2 x 5.1 x 25.4 centimeters |
| Item Type Name | Fill Valve |
| Item dimensions L x W x H | 10.2 x 5.1 x 25.4 centimeters |
| Manufacturer | TOTO |
| Manufacturer Part Number | TSU99A.XR |
| Material | Brass , Stainless Steel |
| Material Type | Brass, Stainless Steel |
| Model Number | TS999A |
| Number of Items | 1 |
| Number of Pieces | 5 |
| Number of Ports | 1 |
| Outlet Connection Size | 0.87 Inches |
| Outlet Connection Type | Clamp |
| Size | 80 cubic inches |
| Specification Met | NSF |
| Thread Size | 7/8 inch |
| UPC | 739268433205 |
| Unit Count | 1 Count |
M**I
Good replacement with one caveat
This assembly was identical to the one I replaced. The old one still worked, but made weird noises and took a while to fully shut off, probably due to scale build-up on internal surfaces. The height of the unit is adjustable to accommodate many different Toto toilets. The instructions contain a table that lists the height setting for each model. If I had used the setting listed for mine, the water level would have been much too low. I ignored the table and set the height to match that of the old unit, and that worked fine. Build quality is good, and the new unit should last a decade or more. Don't be afraid to use a different height setting than instructed if your situation so dictates.
D**S
Works
Excellent
G**N
Toto Toilet repair
Perfect repair kit for our 20 year old Toto toilets. Very good instructions included...a quick fix at a fair price.
K**R
TOTO fill valve. Great purchase
This saved me so much money. A plumber quoted me double the price for the same part and we were able to avoid the labor cost. Quality replacement part!
B**H
Works
Hey it works and easy instal. It was harder to take the old one out.
Trustpilot
1 week ago
1 month ago