---
title: "Toto Toilet Replacement Parts — $291K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/toto-toilet-replacement-parts"
last_updated: "2026-08-08T11:51:40.229Z"
locale: en
meta:
description: "Niche score 49/100 · $291K/yr market · 156K searches/yr · $23.77 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $291K/yr market · 156K searches/yr · $23.77 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Toto Toilet Replacement Parts — $291K/yr Amazon US Niche (2026) - Flapen"
---
# **toto toilet replacement parts**
**Skip it**
Soft demand (-2.4% this quarter) — this niche doesn't clear our bar today.
Market size 51Growth 24Conversion 78Competition 28Returns 54Price range 82Avg price 95Brand share 36Review moat 55Quality gap 55
**Avg price**
**Incredible****$23.77**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$7.50–$55.06**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****7.8%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****1,307.59**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Good****2.8%**
return rate — above 5% kills the launch gate
**Market size**
**Good****$291K**
$291K/yr · 156K searches
**Brand share**
**Okay****84%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****68%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Bad****-2.4%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, toto toilet replacement parts is a $291K/yr Amazon United States market (156K searches/yr). The top 5 brands hold 84% of demand. Verdict: Skip it — 49/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **toto toilet replacement parts market data**
- **Units sold / yr**
- **13K–15K**
- avg 500–750/product
- **Revenue / yr**
- **$297K–$357K**
- units × avg price
- **Conversion rate**
- **7.8%**
- **Avg BSR**
- **#1,906**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **65%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **31 months**
- **Avg seller age**
- **142 days**
## **Competition & brand share**
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **—flat
**Sellers**
**74**
**Top-5 brand share**
**84%**
Top 20: 100%
**Top-5 click share**
**68%**
Top 20: 100%
**Open market**
**13%**
- TOTO47% - Dincerpen13% - Korky12% - Ancable8% - Lychee Light3% - TOILTOBLE3% - Open — no brand owns it (6 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -2.4% search growth over the last 90 days.
5K4K seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/toto-toilet-replacement-parts/trend)
## **Top toto toilet replacement parts search terms**
- **toto toilet replacement parts**67K/yr-18.8%9.6% conv. - **toto toilet parts**38K/yr+21.5%4.7% conv. - **toto flush valve replacement**9K/yr-1.5%5.3% conv. - **toto flush valve**7K/yr+44.3%4.6% conv. - **toto toilet replacement parts kit**6K/yr+9.4%3.5% conv. - **toto replacement parts toilet**5K/yr-30.9%5.4% conv. - **toto replacement parts**4K/yr+22.9%4.2% conv. - **toto st743s replacement parts**4K/yr+2.2%4.2% conv. - **toto parts**3K/yr+24.6%4.9% conv. - **toto 1.6 gpf toilet replacement parts**4K/yr-14.3%5.8% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/toto-toilet-replacement-parts/search-terms)
## **Top toto toilet replacement parts 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%$29K20%$58K30%$87K40%$116K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**TOTO Adjustable Replacement Fill Valve Assembly for Toilet Tanks**TOTO**$35.32**4.6★708 rev](https://www.amazon.com/dp/B0C3NB83Y2) [2**for TOTO Toilet Handle Replacement Parts Kit Side Mount Toilet Flush Handle for TOTO Kohler Toilet Tank Universal THU068#CP Trip Lvr for St743S (Zinc Alloy & Copper Lever)**Dincerpen**$13.13**4.6★167 rev](https://www.amazon.com/dp/B0DS8V3N1P) [3**TOTO Combo Kit - Universal Flapper (Replaces THU499S) & Fill Valve**TOTO**$55.06**4.5★628 rev](https://www.amazon.com/dp/B013TH1VHG) [4**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) [5**for TOTO Toilet Handle Replacement Parts Kit Universal THU068#CP Trip Lvr for St743S Side Mount Toilet Flush Tank Lever Handle for TOTO Kohler Toilet Tank 1-Pack Copper Lever**Ancable**$14.03**4.5★1,239 rev](https://www.amazon.com/dp/B0BHKMCM8P)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**THU224 Toilet Flush Valve Assembly with Mounting Nut Fit for TOTO Two Piece Aquia Toilet Tank #ST412M**TOILTOBLE**$34.64**45 rev1y ago](https://www.amazon.com/dp/B0F8NMV5Y8) [**Nereusfwater Toilet Flush Valve Replacement Kit Universally for 3-Inch One-Piece Toilets Includes Chain & Rubber Seal Compatible with TOTO American Standard and Other WC Tank Repair Parts**Nereusfwater**$25.38**40 rev1y ago](https://www.amazon.com/dp/B0DW7YYYGJ) [**3 Toilet Flush Valve Replacement Parts Fit for Toto THU Two Piece Toilets**daydmaly**$30.46**14 rev1y ago](https://www.amazon.com/dp/B0DTDDS4GK) [**for TOTO Toilet Handle Replacement Parts Kit Side Mount Toilet Flush Handle for TOTO Kohler Toilet Tank Universal THU068#CP Trip Lvr for St743S (Zinc Alloy & Copper Lever)**Dincerpen**$13.13**167 rev1y ago](https://www.amazon.com/dp/B0DS8V3N1P) [**Lychee Light Toilet Flush Valve Replacement Parts for One-Piece Toilets Compatible with Toto THU Series Fits 3-Inch Flush Hole Includes Repair Kit with Two Silicone Gaskets**Lychee Light**$38.54**34 rev1y ago](https://www.amazon.com/dp/B0DL33F87B)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**TOTO Replacement Flapper for Select TOTO 3 Inch Flush Valve Tanks - THU500S**TOTO**$20.97**4.6★**▲ 126%**](https://www.amazon.com/dp/B076KL3K87) [**3 Toilet Flush Valve Replacement Parts Fit for Toto THU Two Piece Toilets**daydmaly**$30.46**5.0★**▲ 30%**](https://www.amazon.com/dp/B0DTDDS4GK) [**TOTO Adjustable Replacement Fill Valve Assembly for Toilet Tanks**TOTO**$35.32**4.6★**▲ 20%**](https://www.amazon.com/dp/B0C3NB83Y2) [**for TOTO Toilet Handle Replacement Parts Kit Side Mount Toilet Flush Handle for TOTO Kohler Toilet Tank Universal THU068#CP Trip Lvr for St743S (Zinc Alloy & Copper Lever)**Dincerpen**$13.13**4.6★**▲ 17%**](https://www.amazon.com/dp/B0DS8V3N1P) [**Nereusfwater Toilet Flush Valve Replacement Kit Universally for 3-Inch One-Piece Toilets Includes Chain & Rubber Seal Compatible with TOTO American Standard and Other WC Tank Repair Parts**Nereusfwater**$25.38**4.3★**▲ 11%**](https://www.amazon.com/dp/B0DW7YYYGJ)
**~~View all trending →~~**
## **What buyers say about toto toilet replacement parts**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**24%
*“Exact fit”*
**Assembly/Installation**11%
*“set up was a great experience”*
**Quality-Overall**9%
*“Excellent Quality”*
**Advertised Vs Actual Product**8%
*“As described”*
**Efficiency**7%
*“works great”*
**Value For Money**7%
*“Good price”*
**Leak-Proof**5%
*“has not leaked once”*
**Ease Of Use**4%
*“Quick and easy”*
**Adjustability/Rotatability/Reclining**3%
*“Works great and love how its adjustable”*
**Durability**2%
*“Durable and Easy to Install”*
### **What buyers complain about **
**Leak-Proof**18%
*“it leaks”*
**Size-Overall**12%
*“Did not fit”*
**Quality-Overall**10%
*“Poor quality”*
**Durability**8%
*“they does not seem to be durable”*
**Functionality-Overall**5%
*“didn't work correctly”*
**Assembly/Installation**4%
*“Weird flush after installing”*
**Compatibility-Overall**4%
*“Beware the Flapper is Not Universal”*
**Instructions/User Manual/Troubleshooting**3%
*“The instructions are pathetic”*
**Defective Material/Parts**3%
*“cheap parts that are universal Worked perfectly”*
**Spray/Flow**3%
*“I had really bad water flow when the tank was filling”*
### **Top return reasons **
**Size-Overall**50%
**Leak-Proof**9%
**Compatibility-Overall**9%
**Defective Material/Parts**8%
**Functionality-Overall**5%
**Advertised Vs Actual Product**4%
**Value For Money**3%
**Assembly/Installation**2%
**Product Condition**1%
**Material Quality**1%
## **Common questions**
- **Is toto toilet replacement parts profitable to sell on Amazon United States?**
- The niche generates $291K/yr across 17 tracked products. 90-day search growth is -2.4%. Flapen's verdict: Skip it (49/100).
- **How competitive is the toto toilet replacement parts niche?**
- 12 brands and 74 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 84% of demand.
- **What do buyers complain about in toto toilet replacement parts?**
- Top complaints mined from reviews: Leak-Proof, Size-Overall, Quality-Overall. The return rate is 2.8%.
- **When does demand for toto toilet replacement parts peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the toto toilet replacement parts niche?**
- Listings span $7.50–$55.06; the average listing price is $23.77 (sweet spot $15–$100). The average incumbent carries 1,308 reviews — the moat a new listing must climb.
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