wd21x10519
Skip itA concentrated shelf (top 5 take 96% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible21.2%search→purchase rate — share of searches ending in a sale
Avg price
Great$17.02avg listing price — sweet spot $15–$100
Price range
Great$9.78–$31.79cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good562.83avg incumbent reviews — the moat a new listing must climb
Returns
Okay4.6%return rate — above 5% kills the launch gate
Growth
Bad-11.7%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$58K$58K/yr · 16K searches
Brand share
Bad96%top-5 brand share — brand-locked demand
Competition
Bad96%top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, wd21x10519 is a $58K/yr Amazon United States market (16K searches/yr). The top 5 brands hold 96% of demand. Verdict: Skip it — 33/100.
Data updated Jul 5, 2026 · scored weekly · How we score niches
wd21x10519 market data
- Units sold / yr
- 3K–4K
- avg 500–750/product
- Revenue / yr
- $51K–$68K
- units × avg price
- Conversion rate
- 21.2%
- Avg BSR
- #2,866
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 67%
- Out of stock
- 25.3%
- Avg brand age
- 34 months
- Avg seller age
- 200 days
Competition & brand share
The top 5 products capture 96% of clicks — a locked-up shelf that new listings rarely crack.Brands
6 flat
Sellers
14
Top-5 brand share
96%
Top 20: 100%
Top-5 click share
96%
Top 20: 100%
Open market
0%
- NOVINO30%
- Parzuozenney30%
- GYOFFULL21%
- TOVEN-RV8%
- GE7%
- KYEKYE4%
Demand & seasonality
Weekly Amazon search volume, last 109 weeks — -11.7% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.6×
Top wd21x10519 search terms
- wd21x105197K/yr
- ge dishwasher flood switch4K/yr
- wd21x10519 ge flood switch3K/yr
- ge dishwasher float switch2K/yr
Top wd21x10519 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.
All 6 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
WD21X10519 GE Dishwasher Flood Switch Replacement for GDT GDF PDT Series
NOVINO$15.474.8★237 rev
WD21X10519 Dishwasher Flood Switch for GE Dishwasher/Thermistor Assembly
Parzuozenney$15.664.6★443 rev
GYOFFULL WD21X10519 Dishwasher Flood Switch
GYOFFULL$9.784.6★125 rev
Upgraded WD21X10519 Dishwasher Flood Switch and Thermistor Assembly
TOVEN-RV$16.404.6★178 rev
GE WD21X10519 Dishwasher Flood Switch and Thermistor Assembly
GE$31.794.8★2,389 rev
Newest
by launch date
WD21X10519 Dishwasher Flood Switch for GE Dishwasher/Thermistor Assembly
KYEKYE$13.015 rev
Upgraded WD21X10519 Dishwasher Flood Switch and Thermistor Assembly
TOVEN-RV$16.40178 rev
WD21X10519 GE Dishwasher Flood Switch Replacement for GDT GDF PDT Series
NOVINO$15.47237 rev
WD21X10519 Dishwasher Flood Switch for GE Dishwasher/Thermistor Assembly
Parzuozenney$15.66443 rev
GYOFFULL WD21X10519 Dishwasher Flood Switch
GYOFFULL$9.78125 rev
Trending
90-day click momentumGE WD21X10519 Dishwasher Flood Switch and Thermistor Assembly
GE$31.794.8★
WD21X10519 Dishwasher Flood Switch for GE Dishwasher/Thermistor Assembly
KYEKYE$13.015.0★
GYOFFULL WD21X10519 Dishwasher Flood Switch
GYOFFULL$9.784.6★
WD21X10519 GE Dishwasher Flood Switch Replacement for GDT GDF PDT Series
NOVINO$15.474.8★
WD21X10519 Dishwasher Flood Switch for GE Dishwasher/Thermistor Assembly
Parzuozenney$15.664.6★
What buyers say about wd21x10519
What buyers praise and complain about, mined from review topics.What buyers love
“It fits”
“Great price”
“Worked as advertised”
“now the dry heater works”
“it's pretty easy”
“Quick and easy fix”
“Very well made compared to the OEM”
“No leakage”
“Did the job”
“It was easy to install”
What buyers complain about
“Not the heating element”
“It was a little time consuming only because I wanted to clean all the parts before putting them back in”
“Broke and flooded our kitchen after just two years”
“they have little to no quality control”
“The connector would not fit prior to this modification”
“and the dishwasher would no longer boost water temperature”
“I was about to spend $600 on a new dishwasher”
“The old one was clearly clogged and when you shook it the insides didn't make a noise and nothing moved”
“Made the mistake of calling out a repair company that essentially told us the reason the water wasn't getting hot”
Top return reasons
Common questions
- Is wd21x10519 profitable to sell on Amazon United States?
- The niche generates $58K/yr across 6 tracked products. 90-day search growth is -11.7%. Flapen's verdict: Skip it (33/100).
- How competitive is the wd21x10519 niche?
- 6 brands and 14 sellers compete. The top 5 products take 96% of clicks and top 5 brands hold 96% of demand.
- What do buyers complain about in wd21x10519?
- Top complaints mined from reviews: Heating, Ease Of Cleaning, Durability. The return rate is 4.6%.
- When does demand for wd21x10519 peak?
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- What does it cost to enter the wd21x10519 niche?
- Listings span $9.78–$31.79; the average listing price is $17.02 (sweet spot $15–$100). The average incumbent carries 563 reviews — the moat a new listing must climb.