---
title: "Toto Toilet Flapper — $147K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/toto-toilet-flapper"
last_updated: "2026-08-08T16:36:11.970Z"
locale: en
meta:
description: "Niche score 43/100 · $147K/yr market · 57K searches/yr · $15.73 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · $147K/yr market · 57K searches/yr · $15.73 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Toto Toilet Flapper — $147K/yr Amazon US Niche (2026) - Flapen"
---
# **toto toilet flapper**
**Skip it**
A concentrated shelf (top 5 take 83% of clicks) — this niche doesn't clear our bar today.
Market size 32Growth 30Conversion 98Competition 14Returns 27Price range 76Avg price 77Brand share 29Review moat 46Quality gap 65
**Conversion**
**Incredible****16.2%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$15.73**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$7.50–$38.43**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****1,871.33**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$147K**
$147K/yr · 57K searches
**Growth**
**Okay****+3.7%**
90-day search growth — must beat 0% to launch
**Brand share**
**Okay****88%**
top-5 brand share — brands hold most of the demand
**Returns**
**Okay****4.8%**
return rate — above 5% kills the launch gate
**Competition**
**Bad****83%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, toto toilet flapper is a $147K/yr Amazon United States market (57K searches/yr). The top 5 brands hold 88% of demand. Demand peaks in Aug–Sep. Verdict: Skip it — 43/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **toto toilet flapper market data**
- **Units sold / yr**
- **8K–10K**
- avg 250–500/product
- **Revenue / yr**
- **$126K–$157K**
- units × avg price
- **Conversion rate**
- **16.2%**
- **Avg BSR**
- **#641**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **67%**
- **Out of stock**
- **8.0%**
- **Avg brand age**
- **47 months**
- **Avg seller age**
- **142 days**
## **Competition & brand share**
The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **—flat
**Sellers**
**77**
**Top-5 brand share**
**88%**
Top 20: 100%
**Top-5 click share**
**83%**
Top 20: 100%
**Open market**
**8%**
- TOTO46% - Korky17% - Essential Values14% - iFealClear6% - Hibbent5% - WELCAPAC5% - Open — no brand owns it (2 brands, 8%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +3.7% search growth over the last 90 days.
5K3KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Aug, Sep · busiest ÷ quietest = 3.5×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/toto-toilet-flapper/trend)
## **Top toto toilet flapper search terms**
- **toto flapper replacement**16K/yr-3.3%12.7% conv. - **toto toilet flapper**18K/yr-9.2%12.0% conv. - **toto toilet flapper replacement**11K/yr+33.2%13.1% conv. - **toto flapper**12K/yr+3.7%10.7% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/toto-toilet-flapper/search-terms)
## **Top toto toilet flapper products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%15%$22K30%$44K45%$66K60%$88K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**TOTO Replacement Flapper for Select TOTO 3 Inch Flush Valve Tanks - THU500S**TOTO**$20.97**4.6★3,320 rev](https://www.amazon.com/dp/B076KL3K87) [2**Essential Values Toto Toilet Replacement Parts - Compatible with 3 Toto Toilet Flapper For G-Max THU499S THU331S THU175S & 2021BP Models**Essential Values**$7.50**4.3★3,403 rev](https://www.amazon.com/dp/B075M3LXMP) [3**Korky 2021BP G-Max Flapper For TOTO Toilet Repairs - Large 3-Inch Flapper - Easy to Install - Made in USA**Korky**$11.28**4.3★3,562 rev](https://www.amazon.com/dp/B001EI7ZAU) [4**3-Inch Toilet Flapper Compatible with TOTO THU140S Flappers CST854 Toilets**iFealClear**$10.10**4.4★827 rev](https://www.amazon.com/dp/B088WBPM68) [5**Hibbent 2 Pack Large 3-Inch Toilet Flapper Replacement Compatible with TOTO flapper Model G-Max THU138S THU175S and THU331S- Oversized Sealing and Easy to Install**Hibbent**$22.17**4.4★1,295 rev](https://www.amazon.com/dp/B0834R9CR3)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**WELCAPAC TO.TO 3-Inch Toilet Flapper Replacement - Compatible with TOTO G-Max THU138S THU175S THU331S | Oversized Sealing Ring Water-Saving Design Stainless Steel Chain**WELCAPAC**$9.39**22 rev10mo ago](https://www.amazon.com/dp/B0FS1TFSN3) [**1 Pack 3-Inch Toilet Flapper Replacement Compatible with TOTO Flapper Model G-Max THU138S THU175S and THU331S**OasisFlow**$10.01**47 rev1y ago](https://www.amazon.com/dp/B0DDXXNBQ9) [**3-Inch Toilet Flapper Compatible with TOTO THU140S Flappers CST854 Toilets**iFealClear**$10.10**827 rev6y ago](https://www.amazon.com/dp/B088WBPM68) [**Hibbent 2 Pack Large 3-Inch Toilet Flapper Replacement Compatible with TOTO flapper Model G-Max THU138S THU175S and THU331S- Oversized Sealing and Easy to Install**Hibbent**$22.17**1,295 rev6y ago](https://www.amazon.com/dp/B0834R9CR3) [**TOTO Replacement Flapper for Select TOTO 3 Inch Flush Valve Tanks - THU500S**TOTO**$20.97**3,320 rev8y ago](https://www.amazon.com/dp/B076KL3K87)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**WELCAPAC TO.TO 3-Inch Toilet Flapper Replacement - Compatible with TOTO G-Max THU138S THU175S THU331S | Oversized Sealing Ring Water-Saving Design Stainless Steel Chain**WELCAPAC**$9.39**4.1★**▲ 251%**](https://www.amazon.com/dp/B0FS1TFSN3) [**TOTO Replacement Flapper for Select TOTO 3 Inch Flush Valve Tanks - THU500S**TOTO**$20.97**4.6★**▲ 120%**](https://www.amazon.com/dp/B076KL3K87) [**1 Pack 3-Inch Toilet Flapper Replacement Compatible with TOTO Flapper Model G-Max THU138S THU175S and THU331S**OasisFlow**$10.01**4.3★**— 9%**](https://www.amazon.com/dp/B0DDXXNBQ9) [**Essential Values Toto Toilet Replacement Parts - Compatible with 3 Toto Toilet Flapper For G-Max THU499S THU331S THU175S & 2021BP Models**Essential Values**$7.50**4.3★**▼ 24%**](https://www.amazon.com/dp/B075M3LXMP) [**Hibbent 2 Pack Large 3-Inch Toilet Flapper Replacement Compatible with TOTO flapper Model G-Max THU138S THU175S and THU331S- Oversized Sealing and Easy to Install**Hibbent**$22.17**4.4★**▼ 28%**](https://www.amazon.com/dp/B0834R9CR3)
**~~View all trending →~~**
## **What buyers say about toto toilet flapper**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**20%
*“Easy install”*
**Size-Overall**16%
*“Exact fit”*
**Quality-Overall**14%
*“Excellent Quality”*
**Advertised Vs Actual Product**12%
*“As advertised”*
**Value For Money**9%
*“Reasonably priced”*
**Efficiency**6%
*“Works great”*
**Leak-Proof**3%
*“has not leaked once”*
**Instructions/User Manual/Troubleshooting**2%
*“Works well, make sure you have the complete instructions”*
**Durability**2%
*“its held up great”*
**Ease Of Use**1%
*“is easy to do”*
### **What buyers complain about **
**Leak-Proof**23%
*“leaked a bit”*
**Size-Overall**15%
*“it is too big”*
**Durability**9%
*“Broken”*
**Quality-Overall**7%
*“This flapper is junk”*
**Assembly/Installation**6%
*“Did not install it”*
**Value For Money**5%
*“it's definitely not as good as the Korky replacements at twice the price”*
**Compatibility-Overall**4%
*“I checked the compatibility and it was THU175S”*
**Maintenance And Repair**3%
*“much cheaper than hiring a plumber to fix”*
**Spray/Flow**3%
*“Does not stop the water flow”*
**Strength**2%
*“it isn't built as sturdy as toto”*
### **Top return reasons **
**Size-Overall**77%
**Defective Material/Parts**5%
**Compatibility-Overall**5%
**Leak-Proof**3%
**Advertised Vs Actual Product**3%
**Functionality-Overall**2%
**Material Quality**1%
**Value For Money**1%
**Add-Ons/Attachments**1%
**Product Condition**1%
## **Common questions**
- **Is toto toilet flapper profitable to sell on Amazon United States?**
- The niche generates $147K/yr across 9 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +3.7%. Flapen's verdict: Skip it (43/100).
- **How competitive is the toto toilet flapper niche?**
- 8 brands and 77 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 88% of demand.
- **What do buyers complain about in toto toilet flapper?**
- Top complaints mined from reviews: Leak-Proof, Size-Overall, Durability. The return rate is 4.8%.
- **When does demand for toto toilet flapper peak?**
- Demand peaks in Aug–Sep; the busiest month runs 3.5× the quietest.
- **What does it cost to enter the toto toilet flapper niche?**
- Listings span $7.50–$38.43; the average listing price is $15.73 (sweet spot $15–$100). The average incumbent carries 1,871 reviews — the moat a new listing must climb.
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