Toto THU854-A Toilet Tank Drain Valve Assembly for 1-Piece Toilet

The Toto THU854-A is a replacement drain valve assembly (also called a toilet flush valve) for Toto one-piece toilets. It sits at the bottom of the tank and opens to release water into the bowl when you flush. It also seals the tank between flushes.

Key Features:

• Genuine Toto drain valve assembly, part number THU854-A
• Replacement part for Toto one-piece toilets
• Replaces the older Toto part number THU451.10A-A

Replace this valve if your tank leaks into the bowl or fails to flush properly.