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57

head gasket

Worth a look

Shows a fragmented shelf (top 5 take 15% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 80Growth 19Conversion 21Competition 96Returns 49Price range 20Avg price 83Brand share 66Review moat 87Quality gap 45

Competition

Incredible15%

top-5 click share — an open shelf

Review moat

Great258.89

avg incumbent reviews — the moat a new listing must climb

Avg price

Great$78.25

avg listing price — sweet spot $15–$100

Market size

Great$1.1M

$1.1M/yr · 851K searches

Brand share

Good65%

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

Returns

Okay3.1%

return rate — above 6% kills the launch gate

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.7%

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

Price range

Bad$7.08–$426.23

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

Growth

Bad-12.0%

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

Competition

Clicks spread well past the top 5 (15% combined) — an open shelf where new products get seen.

Brands

47 falling

Sellers

144

Top-5 brand share

65%

Open market

32%

  • Fel-Pro36%
  • JAVOUKA12%
  • GOCPB7%
  • ZONFANT6%
  • ChawYI4%
  • KAX3%

Product shelf

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%2%$22K4%$44K6%$67K8%$89K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 150 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -12.0% search growth over the last 90 days.
18K13KSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Reviews

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

What buyers love

Quality-Overall21%

“Decent quality”

Size-Overall16%

“They fit as described”

Value For Money15%

“Great Value”

Advertised Vs Actual Product14%

“Exactly as advertised”

Efficiency7%

“Works perfectly”

Leak-Proof4%

“Hasn't leaked yet”

Ease Of Use3%

“easy to use”

Assembly/Installation2%

“they installed without any issues”

Instructions/User Manual/Troubleshooting2%

“The instructions are clear”

Correct Contents2%

“Great kit”

What buyers complain about

Size-Overall16%

“Short bolts”

Quality-Overall10%

“this items are real cheap quality”

Leak-Proof8%

“found the leaks”

Functionality-Overall6%

“Did not work”

Thickness5%

“They needed to be thicker and more rounded”

Advertised Vs Actual Product5%

“SNAKE OIL ANS FALSE ADVERTISING”

Compatibility-Overall4%

“Not for Toyota”

Coolant4%

“seemed fine for a couple months until exhaust leaked into the coolant”

Durability4%

“like it would break very easily if it got placed in the bottom of a tool box on its own”

Value For Money3%

“its extremely hard to believe the little blue coating makes them double the price”

Top return reasons

Size-Overall34%
Compatibility-Overall10%
Defective Material/Parts10%
Functionality-Overall7%
Advertised Vs Actual Product6%
Leak-Proof5%
Value For Money5%
Quality-Overall3%
Maintenance And Repair3%
Product Condition2%