[Lifetime Warranty] 3-Inch Toto Toilet Flapper Replacement - Pack of 2

3" Toto Toilet Flapper - Pack of 2

Key Features

• Fits standard 3-inch toilet flush valves
• Durable, chlorine-resistant rubber construction
• Includes stainless steel chain and hook
• Adjustable design allows for water volume control
• Package contains two flappers

Replaces / Cross-Reference Part Numbers

• THU138S
• THU175S
• THU331S
• THU499S
• THU500S

Compatibility & Fitment

• Designed for TOTO brand toilets with 3-inch flush valves
• Compatible with TOTO G-Max systems
• Fits TOTO models including: CST854, CST864, CST866, CST884

When to Replace

• Toilet runs constantly or intermittently
• Water audibly leaks from the tank into the bowl
• A weak or incomplete flush occurs
• Visible signs of warping, decay, or damage on the existing flapper

Installation Tips

• Shut off the water supply and flush to empty the tank before installation.
• Ensure the flush valve seat is clean and free of debris for a proper seal.
• Adjust the chain to have approximately 1/2 inch of slack when the flapper is closed.
• After installation, turn the water supply on and test the flush.
• Installation typically requires no tools.