---
title: "Toilet Flapper Replacement Kit — $147K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/toilet-flapper-replacement-kit"
last_updated: "2026-08-08T12:29:14.590Z"
locale: en
meta:
description: "Niche score 45/100 · $147K/yr market · 90K searches/yr · $17.04 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $147K/yr market · 90K searches/yr · $17.04 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Toilet Flapper Replacement Kit — $147K/yr Amazon US Niche (2026) - Flapen"
---
# **toilet flapper replacement kit**
**Skip it**
Soft demand (+0.5% this quarter) — this niche doesn't clear our bar today.
Market size 32Growth 26Conversion 85Competition 38Returns 47Price range 81Avg price 80Brand share 27Review moat 47Quality gap 40
**Conversion**
**Great****9.5%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****$6.91–$54.78**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$17.04**
avg listing price — sweet spot $15–$100
**Review moat**
**Okay****1,753.4**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Okay****3.3%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****62%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****$147K**
$147K/yr · 90K searches
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Growth**
**Okay****+0.5%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, toilet flapper replacement kit is a $147K/yr Amazon United States market (90K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Aug–Sep. Verdict: Skip it — 45/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **toilet flapper replacement kit market data**
- **Units sold / yr**
- **8K–10K**
- avg 250–500/product
- **Revenue / yr**
- **$136K–$170K**
- units × avg price
- **Conversion rate**
- **9.5%**
- **Avg BSR**
- **#2,216**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **65%**
- **Out of stock**
- **2.6%**
- **Avg brand age**
- **36 months**
- **Avg seller age**
- **127 days**
## **Competition & brand share**
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▼falling
**Sellers**
**147**
**Top-5 brand share**
**89%**
Top 20: 100%
**Top-5 click share**
**62%**
Top 20: 100%
**Open market**
**9%**
- American Standard56% - Korky15% - Hidnvefen12% - R1L3X1NG3% - senylanhxy3% - Fluidmaster2% - Open — no brand owns it (5 brands, 9%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +0.5% search growth over the last 90 days.
30K20KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Aug, Sep · busiest ÷ quietest = 13.7×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/toilet-flapper-replacement-kit/trend)
## **Top toilet flapper replacement kit search terms**
- **american standard toilet flapper**69K/yr+0.1%8.0% conv. - **american standard flapper**9K/yr+1.8%7.3% conv. - **american standard toilet flapper replacement**5K/yr-10.9%6.5% conv. - **american standard flapper replacement**4K/yr+35.4%6.2% conv. - **toilet flapper american standard**3K/yr-8.4%8.1% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/toilet-flapper-replacement-kit/search-terms)
## **Top toilet flapper replacement kit 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%10%$15K20%$29K30%$44K40%$59K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 20 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**American Standard Toilet Tank Seal Champion Flush Valve Gasket Replacement**American Standard**$17.89**4.5★415 rev](https://www.amazon.com/dp/B004J5QEXE) [2**American Standard 7381129-200.0070A Universal Flapper and Chain with Float for 2-Inch Flush Valves Black**American Standard**$16.91**4.3★1,375 rev](https://www.amazon.com/dp/B004XVO6ZC) [3**Korky Ultra Standard 2-Inch Universal Toilet Flapper - Long Lasting Rubber - Easy to Install - Made in USA 100BP**Korky**$6.91**4.5★15,115 rev](https://www.amazon.com/dp/B00E5ICW0E) [4**American Standard 7381193-200.0070A 3-Inch Toilet Tank Flapper Valve Set**American Standard**$9.58**4.4★685 rev](https://www.amazon.com/dp/B00BYG5UMW) [5**Flush Valve Seal for American Standard & Eljer Toilets Upgraded Silicone Material 7301111-0070A American Standard Toilet Parts Replacement with O Rings for Champion 4 and Eljer Titan 4 2Pcs**Hidnvefen**$8.02**4.6★669 rev](https://www.amazon.com/dp/B0CNTBFM5W)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**American Standard 7381657-200.0070A Toilet Flapper Replacement Kit**UAOPL**$22.83**7 rev3mo ago](https://www.amazon.com/dp/B0GWLHF5WM) [**American Standard Toilet Flapper Replacement Kit 7381657-200.0070A**RMYSTIEAO**$22.87**25 rev7mo ago](https://www.amazon.com/dp/B0G6KPM3KJ) [**American Standard 4 Champion Universal Flush Valve Kit Genuine OEM Part Fits All 2-Piece Champion Toilets Includes Wrench Lock Nut & Extra Flapper (Model 7382106-100.0070A)**American Standard**$54.78**46 rev7mo ago](https://www.amazon.com/dp/B0G4ZF2VK3) [**738042-0070A Toilet Flush Valve Compatible with American Standard ACTUATING UNIT not provided Toilet Flush Valve Flapper Replacement Kits**UCDETD**$28.62**8 rev9mo ago](https://www.amazon.com/dp/B0FYDMQQCR) [**Toilet Flapper Replacement Kit for Vormax Compatible with American Standard Vormax Toilets Black**R1L3X1NG**$23.10**102 rev1y ago](https://www.amazon.com/dp/B0F6N7HXNQ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**American Standard 7381657-200.0070A Toilet Flapper Replacement Kit**UAOPL**$22.83**5.0★**▲ 287%**](https://www.amazon.com/dp/B0GWLHF5WM) [**American Standard Toilet Flapper Replacement Kit 7381657-200.0070A**RMYSTIEAO**$22.87**4.3★**▲ 232%**](https://www.amazon.com/dp/B0G6KPM3KJ) [**American Standard 4 Champion Universal Flush Valve Kit Genuine OEM Part Fits All 2-Piece Champion Toilets Includes Wrench Lock Nut & Extra Flapper (Model 7382106-100.0070A)**American Standard**$54.78**4.5★**▲ 149%**](https://www.amazon.com/dp/B0G4ZF2VK3) [**American Standard Fluidmaster Flapper Assembly (7381008-400.0070A)**American Standard**$9.66**4.2★**▲ 73%**](https://www.amazon.com/dp/B0073PPMIU) [**738042-0070A Toilet Flush Valve Compatible with American Standard ACTUATING UNIT not provided Toilet Flush Valve Flapper Replacement Kits**UCDETD**$28.62**4.8★**▲ 44%**](https://www.amazon.com/dp/B0FYDMQQCR)
**~~View all trending →~~**
## **What buyers say about toilet flapper replacement kit**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**21%
*“EASY TO INSTALL”*
**Size-Overall**14%
*“Fit perfect”*
**Advertised Vs Actual Product**10%
*“As advertised”*
**Leak-Proof**10%
*“This one does not leak”*
**Quality-Overall**8%
*“Excellent product”*
**Value For Money**7%
*“Great Deal”*
**Efficiency**6%
*“Works great”*
**Ease Of Use**5%
*“Easy peasy”*
**Maintenance And Repair**3%
*“reducing future repairs”*
**Durability**2%
*“Reliable performance and great durability—definitely recommend”*
### **What buyers complain about **
**Leak-Proof**23%
*“It leaks”*
**Size-Overall**11%
*“Very small”*
**Durability**9%
*“Not durable”*
**Functionality-Overall**6%
*“Not likely to work”*
**Assembly/Installation**5%
*“took a little time to install”*
**Quality-Overall**4%
*“Very bad quality”*
**Value For Money**3%
*“WASTE OF MONEY”*
**Design-Overall**2%
*“The original design is a poor attempt at water conservation”*
**Product Condition**2%
*“Item looks new but disappointed it came in this condition. It was in a larger box with other items. It looks to have previously cut open. Taped closed.”*
**Water Resistance**2%
*“The original design is a poor attempt at water conservation”*
### **Top return reasons **
**Size-Overall**78%
**Compatibility-Overall**4%
**Defective Material/Parts**4%
**Advertised Vs Actual Product**3%
**Functionality-Overall**3%
**Leak-Proof**3%
**Value For Money**1%
**Assembly/Installation**1%
**Product Condition**1%
**Material Quality**1%
## **Common questions**
- **Is toilet flapper replacement kit profitable to sell on Amazon United States?**
- The niche generates $147K/yr across 20 tracked products. 2 of 4 products launched in the last 360 days are still selling. 90-day search growth is +0.5%. Flapen's verdict: Skip it (45/100).
- **How competitive is the toilet flapper replacement kit niche?**
- 11 brands and 147 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in toilet flapper replacement kit?**
- Top complaints mined from reviews: Leak-Proof, Size-Overall, Durability. The return rate is 3.3%.
- **When does demand for toilet flapper replacement kit peak?**
- Demand peaks in Aug–Sep; the busiest month runs 13.7× the quietest.
- **What does it cost to enter the toilet flapper replacement kit niche?**
- Listings span $6.91–$54.78; the average listing price is $17.04 (sweet spot $15–$100). The average incumbent carries 1,753 reviews — the moat a new listing must climb.
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