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51

oil filter housing

Worth a look

Shows a sweet-spot price point ($59.00 avg), but soft demand (-37.5% this quarter) keeps it on the watch list.

Market size 60Growth 6Conversion 32Competition 52Returns 48Price range 40Avg price 90Brand share 79Review moat 84Quality gap 65

Avg price

Great$59.00

avg listing price — sweet spot $15–$100

Review moat

Great318.1

avg incumbent reviews — the moat a new listing must climb

Brand share

Great56%

top-5 brand share — no brand owns this niche

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Market size

Good$496K

$496K/yr · 326K searches

Competition

Good54%

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

Returns

Okay3.3%

return rate — above 6% kills the launch gate

Price range

Okay$12.88–$225.49

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

Conversion

Okay2.6%

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

Growth

Bad-37.5%

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

Competition

The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.

Brands

22 falling

Sellers

81

Top-5 brand share

56%

Open market

39%

  • Dorman21%
  • YITHSWAY17%
  • Somusen7%
  • MNJWS6%
  • EVIL ENERGY5%
  • keriolee5%

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%5%$25K10%$50K15%$74K20%$99K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 31 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -37.5% search growth over the last 90 days.
18K13KSpike '24Holiday '24Spike '25Black Friday '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Feb, Mar · busiest ÷ quietest = 2.8×

Reviews

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

What buyers love

Quality-Overall21%

“Seems like a good quality kit”

Size-Overall19%

“Everything fit perfectly”

Value For Money11%

“Much cheaper”

Leak-Proof8%

“It doesnt leak”

Assembly/Installation6%

“The install was very straight forward”

Efficiency4%

“Works perfectly”

Advertised Vs Actual Product4%

“Just as advertised”

Coolant3%

“Cooler is cool”

Material Quality2%

“The materials seem comparable to OEM quality”

Filtration2%

“Im very happy with the filter housing”

What buyers complain about

Leak-Proof21%

“Leaks Oil”

Quality-Overall10%

“Average quality”

Sensor9%

“Sensors don't work”

Size-Overall6%

“The diameter is much too large”

Durability5%

“Failed after 3 months use”

Filtration4%

“The filter is no good”

Defective Material/Parts3%

“got the damaged item”

Pressure3%

“broken oil pressure sensor”

Value For Money3%

“I was worried because this was so affordable”

Assembly/Installation3%

“unfortunately had to install in recently”

Top return reasons

Size-Overall19%
Leak-Proof16%
Defective Material/Parts12%
Compatibility-Overall10%
Coolant9%
Filtration5%
Sensor4%
Advertised Vs Actual Product4%
Value For Money3%
Assembly/Installation3%