Is rcj7y spark plug profitable to sell on Amazon United States?

The niche generates $242K/yr across 7 tracked products. 90-day search growth is +35.8%. Flapen's verdict: Skip it (47/100).

How competitive is the rcj7y spark plug niche?

3 brands and 61 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in rcj7y spark plug?

Top complaints mined from reviews: Durability, Socket/Port/Plug, Compatibility-Overall. The return rate is 0.7%.

When does demand for rcj7y spark plug peak?

Demand peaks in Apr–May; the busiest month runs 2.6× the quietest.

What does it cost to enter the rcj7y spark plug niche?

Listings span $3.90–$28.89; the average listing price is $11.68 (sweet spot $15–$100). The average incumbent carries 967 reviews — the moat a new listing must climb.

rcj7y spark plug

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Conversion

Incredible21.3%

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

Returns

Incredible0.7%

return rate — above 5% kills the launch gate

Review moat

Good967.43

avg incumbent reviews — the moat a new listing must climb

Growth

Good+35.8%

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

Price range

Good$3.90–$28.89

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

Avg price

Okay$11.68

avg listing price — sweet spot $15–$100

Market size

Okay$242K

$242K/yr · 97K searches

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad93%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, rcj7y spark plug is a $242K/yr Amazon United States market (97K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Apr–May. Verdict: Skip it — 47/100.

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

rcj7y spark plug market data

Units sold / yr: 20K–25K; avg 1,500–2,000/product
Revenue / yr: $234K–$292K; units × avg price
Conversion rate: 21.3%
Avg BSR: #182
Page quality: 0%
Prime: 100%
Sponsored: 71%
Out of stock: 0.0%
Avg brand age: 45 months
Avg seller age: 160 days

Competition & brand share

The top 5 products capture 93% of clicks — a locked-up shelf that new listings rarely crack.

Brands

3 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

93%

Top 20: 100%

Open market

NGK88%
Wetenex7%
Hipa5%

Demand & seasonality

Weekly Amazon search volume, last 101 weeks — +35.8% search growth over the last 90 days.

Peak months: Apr, May · busiest ÷ quietest = 2.6×

Open Trend

Top rcj7y spark plug search terms

ngk bpmr7a34K/yr +42.2%20.7% conv.
bpmr7a ngk spark plug17K/yr +28.5%24.8% conv.
ngk bpmr7a spark plug13K/yr +30.4%22.3% conv.
bpmr7a12K/yr +27.9%17.6% conv.
stihl spark plugs5K/yr +36.9%1.6% conv.
bpmr7a spark plug6K/yr +44.4%16.6% conv.
chainsaw spark plug4K/yr +10.2%1.1% conv.
ngk bpmr7a spark plug stihl3K/yr +42.3%28.2% conv.
stihl chainsaw spark plug3K/yr +81.4%3.6% conv.

All search terms

Top rcj7y 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 7 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

NGK (6703) BPMR7A Spark Plugs Individual Boxed - 2 Pack Copper

NGK$8.854.8★2,434 rev

NGK (6703) BPMR7A SOLID Standard Spark Plug Pack of 4

NGK$14.174.8★1,141 rev

NGK Spark Plug BPMR7A

NGK$6.934.7★477 rev

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$9.934.4★87 rev

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

Hipa$9.084.6★142 rev

Newest

by launch date

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

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

Hipa$9.08142 rev

3y ago

NGK (6703) BPMR7A Spark Plugs Individual Boxed - 2 Pack Copper

NGK$8.852,434 rev

7y ago

NGK (6703) BPMR7A SOLID Standard Spark Plug Pack of 4

NGK$14.171,141 rev

7y ago

NGK (6703) BPMR7A SOLID Standard Spark Plug Pack of 1

NGK$3.902,364 rev

18y ago

What buyers say about rcj7y spark plug

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

What buyers love

Advertised Vs Actual Product22%

“Exactly what you expect”

Socket/Port/Plug21%

“Plugs are good”

Quality-Overall21%

“Good quality replacement as advertised”

Value For Money9%

“Good price”

Size-Overall7%

“Good fit and price”

Blower3%

“Work perfect in my Ryobi 2 Cycles Leaf Blower”

Locally Manufactured3%

“Nicely made, Brazil, saw started right up”

Shape/Style3%

“they look right”

Motor Power3%

“Best for 2 cycle engines”

Assembly/Installation2%

“Installation was straightforward – perfect fit with no issues”

What buyers complain about

Durability33%

“Dead”

Socket/Port/Plug33%

“2 out of 4 sparkplugs bad right out of box”

Compatibility-Overall17%

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

Top return reasons

Size-Overall62%

Compatibility-Overall10%

Advertised Vs Actual Product9%

Functionality-Overall5%

Socket/Port/Plug5%

Defective Material/Parts4%

Value For Money4%

Product Condition1%

Measurement/Reading Accuracy1%

Certifications1%

Common questions

Is rcj7y spark plug profitable to sell on Amazon United States?: The niche generates $242K/yr across 7 tracked products. 90-day search growth is +35.8%. Flapen's verdict: Skip it (47/100).
How competitive is the rcj7y spark plug niche?: 3 brands and 61 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in rcj7y spark plug?: Top complaints mined from reviews: Durability, Socket/Port/Plug, Compatibility-Overall. The return rate is 0.7%.
When does demand for rcj7y spark plug peak?: Demand peaks in Apr–May; the busiest month runs 2.6× the quietest.
What does it cost to enter the rcj7y spark plug niche?: Listings span $3.90–$28.89; the average listing price is $11.68 (sweet spot $15–$100). The average incumbent carries 967 reviews — the moat a new listing must climb.