coil
Worth a lookShows a fragmented shelf (top 5 take 17% of clicks), but weak search conversion (1.5%) keeps it on the watch list.
Competition
Incredible17%top-5 click share — an open shelf
Avg price
Great$74.71avg listing price — sweet spot $15–$100
Brand share
Great55%top-5 brand share — no brand owns this niche
Market size
Good$841K$841K/yr · 766K searches
Review moat
Good506.74avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Returns
Bad5.3%return rate — above 5% kills the launch gate
Price range
Bad$9.16–$357.56cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-8.3%90-day search growth — must beat 0% to launch
Conversion
Bad1.5%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, coil is a $841K/yr Amazon United States market (766K searches/yr). The top 5 brands hold 55% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 11, 2026 · scored weekly · How we score niches
coil market data
- Units sold / yr
- 15K–20K
- avg 0–100/product
- Revenue / yr
- $1.1M–$1.5M
- units × avg price
- Conversion rate
- 1.5%
- Avg BSR
- #1,037
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 69%
- Out of stock
- 1.2%
- Avg brand age
- 57 months
- Avg seller age
- 160 days
Competition & brand share
Clicks spread well past the top 5 (17% combined) — an open shelf where new products get seen.Brands
47 rising
Sellers
197
Top-5 brand share
55%
Top 20: 88%
Top-5 click share
17%
Top 20: 40%
Open market
41%
- Denso25%
- Delphi9%
- NGK8%
- A-Premium7%
- Bosch5%
- ENA5%
Demand
Weekly Amazon search volume, last 40 weeks — -8.3% search growth over the last 90 days.Top coil search terms
- tune up kit194K/yr
- coil149K/yr
- denso ignition coil72K/yr
- automotive replacement ignition coils48K/yr
- coil pack set47K/yr
- ngk ignition coil35K/yr
- bobina de encendido34K/yr
- ngk coil pack22K/yr
- delphi ignition coil17K/yr
- oem spark plugs and coil packs kit11K/yr
Top coil 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
NGK U5015-4 (49173) Coil-On-Plug Ignition Coil Pack of 4
NGK$87.734.6★34 rev
Denso Direct Ignition Coil - 673-1309 (Fits Select Models and Years of Lexus Toyota and Scion Vehicles)
Denso$49.964.7★1,313 rev
Denso Direct Ignition Coil - 673-2301 (Fits Select Years of Honda: Accord/Civic/CR-V/Element/S2000 and Acura RSX Vehicles)
Denso$42.744.6★612 rev
Denso Direct Ignition Coil - 673-1307 (Fits Select Years of Toyota: Camry/Corolla/Highlander/Matrix/RAV4/Solara Scion: tC/xB Lexus HS250h and Pontiac Vibe Vehicles)
Denso$67.464.7★538 rev
Denso Direct Ignition Coil - 673-1312 (Fits Select Years of Toyota: Avalon/Camry/Highlander/Sienna/Solara and Lexus: ES300/ES330/RX300/RX330/RX400h Vehicles)
Denso$57.884.5★18 rev
Newest
by launch dateDenso Direct Ignition Coil - 673-1312 (Fits Select Years of Toyota: Avalon/Camry/Highlander/Sienna/Solara and Lexus: ES300/ES330/RX300/RX330/RX400h Vehicles)
Denso$57.8818 rev
UF262 Ignition Coils Pack & Double Iridium Spark Plugs & 10.2MM Spark Plug Wires for Chevy Avalanche Express Tahoe Silverado Suburban 1500 2500 3500/GMC Savana Sierra Yukon/Hummer H2 OEM# D585
X4XZ$113.3756 rev
SPARKWHIZ Set of 8 Square UF413 Ignition Coils Pack & Platinum Spark Plugs & Wires Set Replacement for UF413 D510C 5C1554 Compatible with Chevy Silverado 1500 GMC Pontiac G8 Grand Prix H3 Tahoe Yukon
SPARKWHIZ$140.3590 rev
ENA 8 Pack UF413 Ignition Coil 41962 Spark Plug and 48322R Wires Set for 5.3 6.0 6.2 Compatible with Buick Cadillac Chevrolet GMC Hummer Escalade Express Savana 2500 5.3L 6.2L 6.0L 4.8L for 12570616
ENA$156.11267 rev
BDFHYK Ignition Coil Pack UF648 and Iridium Spark Plug 97390 Compatible with Jeep Grand Cherokee 2011-2015 Jeep Wrangler Dodge Charger Grand Caravan 2016 Chrysler 200 300 Jeep Coil Pack 3.6L Set of 6
BDFHYK$69.715,181 rev
Trending
90-day click momentumDenso Direct Ignition Coil - 673-1307 (Fits Select Years of Toyota: Camry/Corolla/Highlander/Matrix/RAV4/Solara Scion: tC/xB Lexus HS250h and Pontiac Vibe Vehicles)
Denso$67.464.7★
SPARKWHIZ Set of 8 Square UF413 Ignition Coils Pack & Platinum Spark Plugs & Wires Set Replacement for UF413 D510C 5C1554 Compatible with Chevy Silverado 1500 GMC Pontiac G8 Grand Prix H3 Tahoe Yukon
SPARKWHIZ$140.354.2★
Denso Direct Ignition Coil - 673-1312 (Fits Select Years of Toyota: Avalon/Camry/Highlander/Sienna/Solara and Lexus: ES300/ES330/RX300/RX330/RX400h Vehicles)
Denso$57.884.5★
ENA 8 Pack UF413 Ignition Coil 41962 Spark Plug and 48322R Wires Set for 5.3 6.0 6.2 Compatible with Buick Cadillac Chevrolet GMC Hummer Escalade Express Savana 2500 5.3L 6.2L 6.0L 4.8L for 12570616
ENA$156.114.3★
Denso Direct Ignition Coil - 673-2301 (Fits Select Years of Honda: Accord/Civic/CR-V/Element/S2000 and Acura RSX Vehicles)
Denso$42.744.6★
What buyers say about coil
What buyers praise and complain about, mined from review topics.What buyers love
“Great build quality”
“it fit as it should have”
“Best value”
“Easy Installation”
“As advertised”
“It works great”
“are durable”
“Easy to swap out”
“Rick M. Spark plugs worked great”
“Proper part”
What buyers complain about
“it shorted out”
“Way less quality than advertised”
“Didn't fit”
“a little pricey”
“I was worried about not been compatible”
“These plugs arent any good at all”
“Product not working properly”
“Didnt fit as advertised”
“with inconsistent speed response”
“Was very skeptical about buying and installing”
Top return reasons
Common questions
- Is coil profitable to sell on Amazon United States?
- The niche generates $841K/yr across 171 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is -8.3%. Flapen's verdict: Worth a look (55/100).
- How competitive is the coil niche?
- 47 brands and 197 sellers compete. The top 5 products take 17% of clicks and top 5 brands hold 55% of demand.
- What do buyers complain about in coil?
- Top complaints mined from reviews: Durability, Quality-Overall, Size-Overall. The return rate is 5.3% — above our launch gate.
- What does it cost to enter the coil niche?
- Listings span $9.16–$357.56; the average listing price is $74.71 (sweet spot $15–$100). The average incumbent carries 507 reviews — the moat a new listing must climb.