TOTO THU331S 3-Inch Toilet Flapper Valve Replacement by NuFlush
TOTO THU331S 3-Inch Toilet Flapper Valve Replacement by NuFlush
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TOTO THU331S 3-Inch Toilet Flapper Valve Replacement by NuFlush

Key item features

  • Genuine Replacement: This is a TOTO THU331S 3-inch replacement flapper valve, ensuring dependable performance as a genuine TOTO part.
  • Universal Compatibility: Designed for toilets with a 3-inch flush hole, it is compatible with most TOTO models.
  • Durable Construction: Made from flexible silicone, this flapper provides a tighter seal and prevents leaks.
  • Effortless Installation: The replacement process is a quick DIY task, requiring no special tools.
  • Enhanced Efficiency: It helps restore efficient flushing and keeps the toilet running smoothly.
  • Long-term Reliability: This replacement part reduces maintenance costs and improves flush efficiency for lasting use.
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Current price is $29.50
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  • Free shipping
  • Free 30-day returns

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Arrives between May 22 - May 29
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Sold and shipped by NuFlush
4.561904761904762 stars out of 5, based on 105 seller reviews(4.6)
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Customer ratings & reviews

4.4 out of 5 stars
stars12 ratings8 reviews
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Showing 1-3 of 8 reviews

Nov 1, 2025
Ross
Sold and shipped byNuFlush
5 out of 5 stars review

Verified Purchase

Worked for my TOTO toilet

worked as expected. it addressed the small water leak that caused the toilet to run from time to time

Incentivized Review
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Jul 21, 2020
MGM577
5 out of 5 stars review

Verified Purchase

Perfect, authentic replacement! Fast-shipping and excellent customer service.

Helpful?2WEKG0R7LDC0502535510
Aug 28, 2020
Kevin
5 out of 5 stars review

Verified Purchase

As advertised

Came quickly, priced right and works perfectly

Helpful?2WEKG0R7LDC0502535510