Is rcj6y spark plug profitable to sell on Amazon United States?

The niche generates $37K/yr across 16 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +112.6%. Flapen's verdict: Worth a look (52/100).

How competitive is the rcj6y spark plug niche?

12 brands and 62 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 79% of demand.

What do buyers complain about in rcj6y spark plug?

Top complaints mined from reviews: Socket/Port/Plug, Heating, Size-Overall. The return rate is 1.1%.

When does demand for rcj6y spark plug peak?

Demand peaks in Apr–May; the busiest month runs 3.5× the quietest.

What does it cost to enter the rcj6y spark plug niche?

Listings span $3.92–$16.44; the average listing price is $8.43 (sweet spot $15–$100). The average incumbent carries 611 reviews — the moat a new listing must climb.

rcj6y spark plug

Worth a look

Shows searches that convert (16.7% search→purchase), but a small market ($37K/yr) keeps it on the watch list.

Conversion

Incredible16.7%

search→purchase rate — share of searches ending in a sale

Growth

Incredible+112.6%

90-day search growth — must beat 0% to launch

Returns

Great1.1%

return rate — above 5% kills the launch gate

Review moat

Good611.25

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay79%

top-5 brand share — brands hold most of the demand

Competition

Okay66%

top-5 click share — leaders hold, buyers still browse

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Avg price

Bad$8.43

avg listing price — sweet spot $15–$100

Price range

Bad$3.92–$16.44

cheapest to priciest tracked listing — scored on the share inside $15–$100

Market size

Bad$37K

$37K/yr · 26K searches

Signals Trending

According to Flapen's Amazon United States niche tracking, rcj6y spark plug is a $37K/yr Amazon United States market (26K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Apr–May. Verdict: Worth a look — 52/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

rcj6y spark plug market data

Units sold / yr: 5K–6K; avg 250–500/product
Revenue / yr: $42K–$51K; units × avg price
Conversion rate: 16.7%
Avg BSR: #258
Page quality: 0%
Prime: 94%
Sponsored: 75%
Out of stock: 3.9%
Avg brand age: 50 months
Avg seller age: 170 days

Competition & brand share

The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 rising

Sellers

Top-5 brand share

79%

Top 20: 100%

Top-5 click share

66%

Top 20: 100%

Open market

17%

Champion45%
Hipa12%
Adefol9%
LEFITPA9%
Yistiun4%
GULUANT4%
Open — no brand owns it (6 brands, 17%)

Demand & seasonality

Weekly Amazon search volume, last 56 weeks — +112.6% search growth over the last 90 days.

Peak months: Apr, May · busiest ÷ quietest = 3.5×

Open Trend

Top rcj6y spark plug search terms

rcj6y spark plug10K/yr +110.3%14.6% conv.
champion rcj6y spark plug9K/yr +118.2%18.5% conv.
champion rcj6y4K/yr +108.1%14.3% conv.
rcj6y4K/yr +110.9%14.9% conv.

All search terms

Top rcj6y spark 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 16 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Champion Copper Plus Small Engine 852 (RCJ6Y) Pack of 4 (UPC 037551151714)

Champion$15.034.7★1,021 rev

Champion Copper Plus Small Engine 852 (RCJ6Y) Pack of 1 (UPC 037551001040)

Champion$4.944.7★1,021 rev

Hipa BPMR7A Spark Plug for NGK 6703 Champion RCJ6Y RCJ7Y Copper (4 Pack)

Hipa$9.084.6★142 rev

Spark Plug Replacement for NGK BPMR7A L7T and for Champion CJ8 RCJ6Y RCJ7Y & More Types Sparkplug Adefol Spark Plugs Fit for Stihl & Husqvarna Chainsaw Lawnmower Engines

Adefol$5.014.6★2,103 rev

LEFITPA 2 Pack Replacement RCJ6Y Spark Plug for Champion Lawn Mower Models

LEFITPA$8.614.4★58 rev

Newest

by launch date

Yistiun BPMR7A Spark Plug for NGK BPMR7A BPM7A 6703;For Champion RCJ6Y RCJ7Y CJ7Y For Torch LR7TC For Carlton: SPCA6 SPCAR7 For Champion 859 For Dolmar 965603021 For Husqvarna 503235011 503235111

Yistiun$3.924 rev

5mo ago

BPMR7A Spark Plug for NGK BPMR7A BPM7A Champion RCJ6Y RCJ7Y Torch LR7TC Sthil MS170 MS180 026 MS250 MS240 MS260 MS361 MS290 Chainsaw 4 PACK

Wetenex$9.9387 rev

1y ago

GULUANT Replacement RCJ6Y Spark Plug for Champion Lawn Mower Models

GULUANT$5.9925 rev

2y ago

LEFITPA 2 Pack Replacement RCJ6Y Spark Plug for Champion Lawn Mower Models

LEFITPA$8.6158 rev

3y ago

Spark Plug Replacement for NGK BPMR7A L7T and for Champion CJ8 RCJ6Y RCJ7Y & More Types Sparkplug Adefol Spark Plugs Fit for Stihl & Husqvarna Chainsaw Lawnmower Engines

Adefol$5.012,103 rev

3y ago

What buyers say about rcj6y spark plug

What buyers praise and complain about, mined from review topics.

What buyers love

Advertised Vs Actual Product24%

“Exactly what you expect”

Socket/Port/Plug18%

“Good working spark plug”

Quality-Overall15%

“Good performance right out of the box”

Size-Overall10%

“Perfect fit”

Value For Money10%

“Affordability”

Assembly/Installation3%

“It worked great easy to install”

Efficiency3%

“Works great”

Motor Power3%

“Best for 2 cycle engines”

Brightness/Shine/Glow3%

“Good spark”

Locally Manufactured2%

“Nicely made, Brazil, saw started right up”

What buyers complain about

Socket/Port/Plug33%

“Bad plug”

Heating17%

“Using to high temperature range will cause engine overheating and plug fouling”

Size-Overall8%

“Sized smaller than advertised”

Compatibility-Overall8%

“Air filters are not compatible with a Stihl MS250 as stated in the description”

Quality-Overall6%

“cheaper and same quality”

Top return reasons

Size-Overall59%

Compatibility-Overall8%

Advertised Vs Actual Product8%

Defective Material/Parts5%

Functionality-Overall5%

Socket/Port/Plug4%

Value For Money4%

Product Condition1%

Motor Issues1%

Measurement/Reading Accuracy1%

Common questions

Is rcj6y spark plug profitable to sell on Amazon United States?: The niche generates $37K/yr across 16 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +112.6%. Flapen's verdict: Worth a look (52/100).
How competitive is the rcj6y spark plug niche?: 12 brands and 62 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 79% of demand.
What do buyers complain about in rcj6y spark plug?: Top complaints mined from reviews: Socket/Port/Plug, Heating, Size-Overall. The return rate is 1.1%.
When does demand for rcj6y spark plug peak?: Demand peaks in Apr–May; the busiest month runs 3.5× the quietest.
What does it cost to enter the rcj6y spark plug niche?: Listings span $3.92–$16.44; the average listing price is $8.43 (sweet spot $15–$100). The average incumbent carries 611 reviews — the moat a new listing must climb.