---
title: "5221er1003s — $53K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/appliances/5221er1003s"
last_updated: "2026-08-09T05:16:54.274Z"
locale: en
meta:
description: "Niche score 45/100 · $53K/yr market · 12K searches/yr · $32.26 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $53K/yr market · 12K searches/yr · $32.26 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "5221er1003s — $53K/yr Amazon US Niche (2026) - Flapen"
---
# **5221er1003s**
**Skip it**
A small market ($53K/yr) — this niche doesn't clear our bar today.
Market size 13Growth 35Conversion 96Competition 13Returns 30Price range 95Avg price 95Brand share 29Review moat 80Quality gap 73
**Conversion**
**Incredible****13.3%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$32.26**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$20.32–$76.85**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****390.5**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+7.7%**
90-day search growth — must beat 0% to launch
**Returns**
**Okay****4.6%**
return rate — above 5% kills the launch gate
**Brand share**
**Okay****88%**
top-5 brand share — brands hold most of the demand
**Market size**
**Bad****$53K**
$53K/yr · 12K searches
**Competition**
**Bad****85%**
top-5 click share — a locked-up shelf
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, 5221er1003s is a $53K/yr Amazon United States market (12K searches/yr). The top 5 brands hold 88% of demand. Verdict: Skip it — 45/100.
Data updated Jul 5, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **5221er1003s market data**
- **Units sold / yr**
- **2K–2K**
- avg 100–250/product
- **Revenue / yr**
- **$48K–$65K**
- units × avg price
- **Conversion rate**
- **13.3%**
- **Avg BSR**
- **#2,922**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **80%**
- **Out of stock**
- **5.1%**
- **Avg brand age**
- **17 months**
- **Avg seller age**
- **176 days**
## **Competition & brand share**
The top 5 products capture 85% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**9 **▼falling
**Sellers**
**28**
**Top-5 brand share**
**88%**
Top 20: 100%
**Top-5 click share**
**85%**
Top 20: 100%
**Open market**
**7%**
- Gartu42% - LG25% - inruwo8% - Cusvivid7% - LinkEZ6% - BTROVIA5% - Open — no brand owns it (3 brands, 7%)
## **Demand**
Weekly Amazon search volume, last 43 weeks — +7.7% search growth over the last 90 days.
400300Spike '25Holiday '25Spike '26Prime Day '26Oct '25Nov '25Jan '26Mar '26Apr '26Jun '26
[**Open Trend **](https://flapen.com/research/us/appliances/5221er1003s/trend)
## **Top 5221er1003s 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%$8K30%$16K45%$24K60%$32K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**5221ER1003S Washer Water Inlet Valve Compatible with kenmore: WKE100HVA WM4000HBA WM3400CW WM4000HWA WM3470CW etc Replace 4869496 AP6798394 PS12587936 EAP12587936 PD00057211 etc**Gartu**$23.51**4.1★52 rev](https://www.amazon.com/dp/B0FDJQL2W9) [2**LG 5221ER1003S Washer Water Inlet Valve Assembly**LG**$76.85**4.4★58 rev](https://www.amazon.com/dp/B09XJHNW72) [3**5221ER1003S Washing Machine Cold Water Inlet Valve fit for LG Washer Replace 4869496 AP6798394 PS12587936 EAP12587936 PD00057211**inruwo**$22.14**3.4★11 rev](https://www.amazon.com/dp/B0FJ8G12GC) [4**5221ER1003S Washer Water Inlet Valve Assembly for LG Kenmore**Cusvivid**$26.40**0.0★0 rev](https://www.amazon.com/dp/B0GYDJ9QVX) [5**LG Valve 5221ER1003A and 5220FR2075L**LinkEZ**$24.30**4.6★1,302 rev](https://www.amazon.com/dp/B00DNCHMDA)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**5221ER1003S Washer Water Inlet Valve Assembly for LG Kenmore**Cusvivid**$26.40**0 rev2mo ago](https://www.amazon.com/dp/B0GYDJ9QVX) [**5221ER1003S Washer Water Inlet Valve Assembly Compatible with LG Kenmore Washing Machines Replace for 4869496 AP6798394 PS12587936 EAP12587936 PD00057211**Lmkai**$25.58**4 rev10mo ago](https://www.amazon.com/dp/B0FM8G6HJ8) [**AIYOYOLIFE Washer Water Inlet Valve Compatible with LG Washing Machine WM3400CW WM3460CV WM3500CW WKEX200HBA WKEX200HWA Replace#:5221ER1003S 4869496 AP6798394 PS12587936 EAP12587936 PD00057211**AIYOYOLIFE**$20.32**9 rev12mo ago](https://www.amazon.com/dp/B0FH1YNH1W) [**5221ER1003S Washer Water Inlet Valve Compatible with kenmore: WKE100HVA WM4000HBA WM3400CW WM4000HWA WM3470CW etc Replace 4869496 AP6798394 PS12587936 EAP12587936 PD00057211 etc**Gartu**$23.51**52 rev1y ago](https://www.amazon.com/dp/B0FDJQL2W9) [**5221ER1003S Washer Water Inlet Valve Fits for LG**BTROVIA**$21.32**4 rev1y ago](https://www.amazon.com/dp/B0F2F2W6N4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**5221ER1003S Washer Water Inlet Valve Assembly for LG Kenmore**Cusvivid**$26.40**0.0★**▲ 235%**](https://www.amazon.com/dp/B0GYDJ9QVX) [**TOMOON 5221ER1003A 5220FR2075L Water Inlet Valve Fit for LG &Ken.more Front**TOMOON**$29.16**4.5★**▲ 115%**](https://www.amazon.com/dp/B08P35PHLF) [**LG 5221ER1003A Genuine OEM Water Inlet Valve Assembly for LG Washing Machines**LG**$53.01**4.7★**▲ 90%**](https://www.amazon.com/dp/B00M25QLQS) [**5221ER1003S Washing Machine Cold Water Inlet Valve fit for LG Washer Replace 4869496 AP6798394 PS12587936 EAP12587936 PD00057211**inruwo**$22.14**3.4★**▲ 38%**](https://www.amazon.com/dp/B0FJ8G12GC) [**5221ER1003S Washer Water Inlet Valve Assembly Compatible with LG Kenmore Washing Machines Replace for 4869496 AP6798394 PS12587936 EAP12587936 PD00057211**Lmkai**$25.58**4.6★**▲ 29%**](https://www.amazon.com/dp/B0FM8G6HJ8)
**~~View all trending →~~**
## **What buyers say about 5221er1003s**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**27%
*“Perfect Fit”*
**Value For Money**13%
*“Good price”*
**Quality-Overall**10%
*“Great quality,, easy installation, it fit great on my LG washer, and the best part, the price fits perfectly within anyone's budget”*
**Leak-Proof**7%
*“No leaks”*
**Functionality-Overall**7%
*“Direct replacement works good so far”*
**Ease Of Use**6%
*“Easy and quick”*
**Maintenance And Repair**6%
*“Easy replacement”*
**Efficiency**4%
*“Works well”*
**Compatibility-Overall**3%
*“compatible with original part number”*
**Advertised Vs Actual Product**3%
*“Works great as expected”*
### **What buyers complain about **
**Durability**18%
*“It doesnt last a week”*
**Size-Overall**13%
*“This didn't fit my washing machine”*
**Leak-Proof**9%
*“was in a pickle, as the OEM failed and leaking, found a replacement which also failed at install”*
**Defective Material/Parts**7%
*“Product was damaged”*
**Advertised Vs Actual Product**7%
*“The manufacturer's listing on Amazon even said it would fit my model. It didn't”*
**Socket/Port/Plug**6%
*“Part does not fit electrical connectors or water connectors”*
**Water Resistance**5%
*“This product does not regulate water”*
**Compatibility-Overall**3%
*“it was not compatible with my newer machine”*
**Functionality-Overall**3%
*“didn't work”*
**Noise Level**3%
*“It has a VERY LOUD high pitch shrill sound when water is running through it”*
### **Top return reasons **
**Size-Overall**34%
**Defective Material/Parts**19%
**Advertised Vs Actual Product**11%
**Compatibility-Overall**11%
**Leak-Proof**5%
**Functionality-Overall**5%
**Connectivity-Overall**3%
**Product Condition**3%
**Value For Money**2%
**Assembly/Installation**2%
## **Common questions**
- **Is 5221er1003s profitable to sell on Amazon United States?**
- The niche generates $53K/yr across 10 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +7.7%. Flapen's verdict: Skip it (45/100).
- **How competitive is the 5221er1003s niche?**
- 9 brands and 28 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 88% of demand.
- **What do buyers complain about in 5221er1003s?**
- Top complaints mined from reviews: Durability, Size-Overall, Leak-Proof. The return rate is 4.6%.
- **What does it cost to enter the 5221er1003s niche?**
- Listings span $20.32–$76.85; the average listing price is $32.26 (sweet spot $15–$100). The average incumbent carries 391 reviews — the moat a new listing must climb.
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