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50

oil drain plug gasket

Worth a look

Shows low returns (1.3%), but soft demand (-4.6% this quarter) keeps it on the watch list.

Market size 46Growth 23Conversion 65Competition 53Returns 89Price range 32Avg price 27Brand share 77Review moat 62Quality gap 32

Returns

Great1.3%

return rate — above 6% kills the launch gate

Brand share

Great58%

top-5 brand share — no brand owns this niche

Conversion

Good5.8%

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

Review moat

Good1,016.64

avg incumbent reviews — the moat a new listing must climb

Competition

Good53%

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

Market size

Okay$244K

$244K/yr · 458K searches

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Price range

Okay$4.49–$19.96

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

Avg price

Okay$9.27

avg listing price — sweet spot $15–$100

Growth

Bad-4.6%

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

Competition

The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.

Brands

23 falling

Sellers

53

Top-5 brand share

58%

Open market

36%

  • Wevdn22%
  • SSNNUU14%
  • KOROP AUTO PARTS8%
  • AKOSN7%
  • Toyota7%
  • maierke6%

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%10%$24K20%$49K30%$73K40%$98K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 25 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -4.6% search growth over the last 90 days.
10K6KSpike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Reviews

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

What buyers love

Size-Overall27%

“Fit as expected”

Value For Money16%

“Great Value”

Quality-Overall16%

“Decent quality”

Advertised Vs Actual Product10%

“As Advertised”

Leak-Proof9%

“do not leak”

Magnetic Strength/Adsorption3%

“The magnetic feature is a nice bonus”

Efficiency3%

“Works as it should”

Lubrication2%

“Good for oil plugs you don't have to change it out everything of a oil change”

Ease Of Use2%

“Comes in handy”

Thickness1%

“Awesome assortment, thick washers”

What buyers complain about

Size-Overall35%

“Too small”

Compatibility-Overall15%

“Not compatible”

Leak-Proof10%

“Leaking”

Advertised Vs Actual Product6%

“False Advertisement”

Thickness4%

“be as thick as a normal crush washer should be”

Lubrication4%

“A quick lube oil change place nearly destroyed my engine in a Jiffy”

Quality-Overall4%

“Kindof thin, not great quality”

Ease Of Use2%

“wasnt sure which way to put it on”

Magnetic Strength/Adsorption2%

“Magnet falls off easily when contacted by oil”

Socket/Port/Plug1%

“The old plug threads were in poor shape”

Top return reasons

Size-Overall61%
Compatibility-Overall13%
Advertised Vs Actual Product7%
Defective Material/Parts4%
Value For Money3%
Quality-Overall2%
Thickness2%
Thin2%
Functionality-Overall1%
Leak-Proof1%