The TOTO Adjustable Replacement Fill Valve Assembly (TSU99A.XR) for toilet tanks is compatible for all current TOTO toilet models. The height and refill volume can be adjusted according to your toilet tank settings, bringing your toilet back to optimal performance. The fill valve has a standard 7/8 inch inlet connection. Includes valve, refill tube, and cone washer with nut.

Product Information

• Adjustable for all TOTO toilet tanks
• Resets your tank back to optimal performance
• Includes valve, refill tube and clamp, cone washer and nut
• Standard 7/8 inch inlet connection

Since 1917, TOTO has been a global leader in bathroom innovation, known for superior quality, comfort, and design. 

Additional Details

• Brand: TOTO
• MPN: TSU99A.XR
• Thread Type: NPT
• Connector Type: Threaded

To learn more about this fill valve, read our article How to Easily Find the Toilet Model Number and our Step-by-Step Guide to Replace a Fill Valve!

TOTO Adjustable Replacement Fill Valve Assembly FAQ

Does Toto Adjustable Replacement Fill Valve come with everything needed for installation?

Yes, the assembly includes the key components needed for a standard replacement installation: the fill valve, refill tube, clamp, cone washer, and nut

It's recommended to replace the existing supply line during installation, even if the current line appears to be in good condition. The compatible replacement is the 3/8" x 12" Stainless Closet Supply Line.

Is the TOTO TSU99A.XR part compatible with my toilet?

This part is designed to be universal and compatible with most TOTO toilet models. However, if you’re unsure or would like confirmation for your specific toilet, please contact our customer service team via the chat bot, email, or phone.

How do I replace the fill valve on my Toto toilet?

Turn off the water supply and flush the toilet to empty the tank. Disconnect the supply line, then remove the old fill valve from inside the tank. Install the new fill valve in its place, adjust it to the correct height, reconnect the supply line, and turn the water back on. Finally, test the flush and adjust the water level if needed.

How do I choose the right universal fill valve for my toilet?

Look for a fill valve that is compatible with your toilet brand and tank type, with adjustable height and refill settings. Universal-style fill valves are designed to fit most standard toilet tanks, but it’s still important to confirm tank space, connection size, and manufacturer recommendations before purchasing. 

When should I replace my toilet fill valve instead of repairing it?

You should replace the fill valve if you notice constant running water, slow or inconsistent tank filling, noisy operation, or if adjustments no longer resolve performance issues. In most cases, replacement is more reliable and cost-effective than attempting repairs.

Can the height and water level be adjusted on the Adjustable Replacement Fill Valve Assembly?

Yes, TOTO's assembly kit allows for both height and water level adjustments. This makes it easy to set the correct fill volume for your specific toilet tank to ensure proper flushing performance.