50 amp generator plug
Skip itSoft demand (-57.3% this quarter) — this niche doesn't clear our bar today.
Avg price
Great$48.86avg listing price — sweet spot $15–$100
Price range
Great$16.09–$122.68cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great454.13avg incumbent reviews — the moat a new listing must climb
Brand share
Good62%top-5 brand share — brands hold most of the demand
Returns
Good2.5%return rate — above 5% kills the launch gate
Conversion
Okay3.8%search→purchase rate — share of searches ending in a sale
Competition
Okay59%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$44K$44K/yr · 24K searches
Growth
Bad-57.3%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, 50 amp generator plug is a $44K/yr Amazon United States market (24K searches/yr). The top 5 brands hold 62% of demand. Demand peaks in Jan–Aug–Oct. Verdict: Skip it — 41/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
50 amp generator plug market data
- Units sold / yr
- 1K–1K
- avg 0–100/product
- Revenue / yr
- $49K–$61K
- units × avg price
- Conversion rate
- 3.8%
- Avg BSR
- #64
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 92%
- Out of stock
- 3.4%
- Avg brand age
- 49 months
- Avg seller age
- 189 days
Competition & brand share
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.Brands
22 flat
Sellers
35
Top-5 brand share
62%
Top 20: 98%
Top-5 click share
59%
Top 20: 96%
Open market
32%
- RVMATE19%
- Ficstar15%
- LANDNOR13%
- Sintron8%
- SURAIELEC7%
- CircleRiver6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -57.3% search growth over the last 90 days.Peak months: Jan, Aug, Oct · busiest ÷ quietest = 4.3×
Top 50 amp generator plug 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
RVMATE Pre-Drilling 50 Amp Generator Inlet Box NEMA SS2-50P Inlet Box
RVMATE$31.334.7★575 rev
Ficstar 15FT 50 Amp Generator Cord and Power Inlet Box Kit NEMA 14-50P to SS2-50R Generator Cord Pre-Drilled 50 Amp Generator Inlet Box with 6/3+8/1 AWG STW Wire 125/250V 12500W UL&ETL Listed
Ficstar$87.984.8★194 rev
50AMP 15Feet Generator Cord with Pre-drilled Power Inlet Box 4 Prong 125V/250V NEMA 14-50P Male to SS2-50R STW 6/3+8/1 AWG Twist Locking with Inlet Box for Generator to House UL&ETL Listed
LANDNOR$68.384.9★660 rev
SURAIELEC 50 Amp Generator Power Inlet Box NEMA SS2-50P Generator Box for 3-Prong Generator Cord 120/240V 12000W Weatherproof Outdoor Outlet Receptacle
SURAIELEC$68.024.8★134 rev
Sintron Generator Connector 50 Amp NEMA SS2-50R USA/Canada Marine Shore 4-Pin Straight Blade Connector 3 Pole 4 Wire Grounding 125V/250V ETL Listed Twist Locking Connector 50A CS6364 12500 Watts
Sintron$22.854.7★154 rev
Newest
by launch date
VHBW 50 Amp Generator Plug NEMA SS2-50R Female Twist Lock Connector - 125/250V 50A 3-Pole 4-Wire Locking Plug with Protective Boot for RV/Marine/Shore Power - ETL Listed
vhbw$20.4029 rev
Ficstar 15FT 50 Amp Generator Cord and Power Inlet Box Kit NEMA 14-50P to SS2-50R Generator Cord Pre-Drilled 50 Amp Generator Inlet Box with 6/3+8/1 AWG STW Wire 125/250V 12500W UL&ETL Listed
Ficstar$87.98194 rev
Ficstar 10FT 50 Amp Generator Cord and Power Inlet Box Kit NEMA 14-50P to SS2-50R Generator Extension Cord Pre-Drilled 50 Amp Generator Inlet Box with STW Wire 125/250V 12500W;UL&ETL Listed
Ficstar$74.92194 rev
SURAIELEC 50 Amp Generator Power Inlet Box NEMA SS2-50P Generator Box for 3-Prong Generator Cord 120/240V 12000W Weatherproof Outdoor Outlet Receptacle
SURAIELEC$68.02134 rev
15FT 50 Amp Generator Cord with Pre-Drilled Power Inlet Box Heavy Duty Generator Power Cord 4 Prong 125/250V NEMA 14-50P Male to SS2-50R & CS6364 Waterproof ETL Listed Home/RV Power Supply
Filluck$77.8643 rev
Trending
90-day click momentumVHBW 50 Amp Generator Plug NEMA SS2-50R Female Twist Lock Connector - 125/250V 50A 3-Pole 4-Wire Locking Plug with Protective Boot for RV/Marine/Shore Power - ETL Listed
vhbw$20.404.6★
Ficstar 10FT 50 Amp Generator Cord and Power Inlet Box Kit NEMA 14-50P to SS2-50R Generator Extension Cord Pre-Drilled 50 Amp Generator Inlet Box with STW Wire 125/250V 12500W;UL&ETL Listed
Ficstar$74.924.8★
CircleRiver 50 Amp 15Feet Generator Cord and Power Inlet Box Combo Kit NEMA 14-50P Male to SS2-50R STW 6/3+8/1 AWG 125/250V Twist Locking with Inlet Box for Generator to House
CircleRiver$90.454.8★
islewire 50 Amp Generator Power Inlet Box Pre-drilled NEMA SS2-50P Box 4-Prong Twist Lock Plug 125/250V 12500W Weatherproof NEMA 3R for Outdoor Use LED Indicator Emergency Ready ETL Listed
islewire$24.934.5★
Rophor 50 Amp Generator Power Inlet Box NEMA SS2-50P for 3 Prong Generator Cord 125/250 Volt 12500 Watts Weatherproof Outdoor Use ETL Listed
Rophor$34.014.6★
What buyers say about 50 amp generator plug
What buyers praise and complain about, mined from review topics.What buyers love
“Good Quality Box”
“Installed professionally”
“As advertised”
“Great value”
“Fit great”
“everything connects easily”
“Strong box”
“HEAVY DUTY”
“Generator power cord”
“Great design”
What buyers complain about
“Poor quality”
“Doesn't fit”
“Box will rust”
“didn't work for my set up”
“While the receptacle is well made youll note the plug pictured shows a hole”
“The box that mounts on the house is poor quality”
“The lugs are a terrible design”
“Only lasted a few uses”
“-2 more stars for not being steel as advertised”
“The water resistant membrane part in the new plug seems like it won't last very long before it ages”
Top return reasons
Common questions
- Is 50 amp generator plug profitable to sell on Amazon United States?
- The niche generates $44K/yr across 24 tracked products. 90-day search growth is -57.3%. Flapen's verdict: Skip it (41/100).
- How competitive is the 50 amp generator plug niche?
- 22 brands and 35 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 62% of demand.
- What do buyers complain about in 50 amp generator plug?
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Rusts/Corrodes. The return rate is 2.5%.
- When does demand for 50 amp generator plug peak?
- Demand peaks in Jan–Aug–Oct; the busiest month runs 4.3× the quietest.
- What does it cost to enter the 50 amp generator plug niche?
- Listings span $16.09–$122.68; the average listing price is $48.86 (sweet spot $15–$100). The average incumbent carries 454 reviews — the moat a new listing must climb.