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
Okay5.3%return rate — above 6% 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
Competition
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%
Open market
41%
- Denso25%
- Delphi9%
- NGK8%
- A-Premium7%
- Bosch5%
- ENA5%
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 171 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 date
MOAUTO Ignition Distributor w/Cap & Rotor and 8 Iridium Spark Plugs with Wire Set Tune Up Kit F2TZ12127A 84-2890 Compatible with Ford Bronco E-150 Econoline Club Wagon F-150 F-250 1992-1996 Explorer
MOAUTO$99.8713 rev
Autoexact Ignition Coils & Iridium Spark Plugs & Wires Kit Fit for Chevy Silverado Tahoe Suburban Avalanche Express GMC Sierra Cadillac Pontiac Hummer 6.0L 5.3L 8set Direct Replacement Set for UF413
autoexact$124.3958 rev
Autoexact Ignition Coil Packs & Iridium Spark Plugs Kit Fit for Chevy 2010-2017 Equinox Malibu Cobalt HHR Captiva/GMC Terrain/Buick Verano LaCrosse/Pontiac G6/Saturn 2.0L 2.2L 2.4L L4 # UF491 4 Sets
autoexact$62.6758 rev
8-Pack UF510 High-Performance Ignition Coil & Iridium Spark Plug Set - Complete Tune-Up Kit for 2004-2006 INFINITI QX56 & Nissan Titan Armada Pathfinder with 5.6L V8 Engine - Replaces GN10243 5C1482
Pynccid$84.324 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$57.8818 rev
Trending
90-day click momentumAutoexact Ignition Coil Packs & Iridium Spark Plugs Kit Fit for Chevy 2010-2017 Equinox Malibu Cobalt HHR Captiva/GMC Terrain/Buick Verano LaCrosse/Pontiac G6/Saturn 2.0L 2.2L 2.4L L4 # UF491 4 Sets
autoexact$62.674.5★
UF550 Ignition Coil Pack and Iridium Spark Plugs Set of 6 Compatible with Infiniti EX35 Q50 G25 FX35 QX60 Nissan Altima Maxima 2007-2020 Replaces#C1670 22448-JA10C
KacuYelin$63.474.7★
A-Premium 1 Ignition Coil with 6 Spark Plug Wires and 6 Iridium Spark Plugs Compatible with Dodge Grand Caravan 2001-2010 Caravan & Chrysler Town & Country Pacifica Voyager & Volkswagen Routan
A-Premium$72.074.4★
MOAUTO Ignition Distributor w/Cap & Rotor and 8 Iridium Spark Plugs with Wire Set Tune Up Kit F2TZ12127A 84-2890 Compatible with Ford Bronco E-150 Econoline Club Wagon F-150 F-250 1992-1996 Explorer
MOAUTO$99.874.8★
DB Electrical 160-01010 Ignition Coil Compatibale with/replacement for Briggs & Stratton 802574 493237 692605
DB Electrical$20.044.1★
Demand
Weekly Amazon search volume, last 40 weeks — -8.3% search growth over the last 90 days.Reviews
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”