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yamaha lower unit oil

Skip it42/100

a small market ($134K/yr) — yamaha lower unit oil doesn't clear our bar today.

Market/yr

$134K

Growth (1y)

+190.3%

Products

15

Brands

5

was 7 a year ago

Sellers

41

Price range

$15.00–$56.57

Returns

0.5%

Rating

4.7★

42/100

Skip it

Scored 42/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns
Market size
7
×0.30
Growth
76
×0.30
Competition
30
×0.20
Quality gap
20
×0.10
Returns
96
×0.10

Demand

Weekly Amazon search volume, last 104 weeks — +190.3% year over year.
1K649Spike '24Spike '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26

Seasonality

Monthly demand index across the year — 1.00 is average.

Peak months: Mar, Apr, May, Oct · busiest ÷ quietest = 3.0×

Competition

75%Yamaha Motor
  • Yamaha Motor75%
  • STONEMUSLE15%
  • PWC Parts Co6%
  • SeaSierra2%
  • Quicksilver2%
  • Other0%

The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them. 5 brands and 41 sellers compete here.

Brands

5 falling

was 7 a year ago

Sellers

41

Top 5 brand share

100%

#ProductBrandPriceRatingReviewsClick shareTrend

Product shelf

All 15 tracked products in this niche.

Reviews

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

What buyers love

Quality-Overall22%

“Great kit”

Value For Money20%

“Great Value”

Advertised Vs Actual Product13%

“As advertised”

Efficiency13%

“Did its job”

Ease Of Use10%

“Easy to use”

Size-Overall5%

“Proper fit”

Leak-Proof3%

“Also used part of kit to pump up gearcase to 10lbs check for leaks worked great”

Functionality-Overall2%

“Product worked fine”

Motor Power2%

“works great used on outboard motor”

Noise Level2%

“Smooth ride now level of noise is now smoother”

What buyers complain about

Size-Overall28%

“Fill hose does not securely fit the pump”

Instructions/User Manual/Troubleshooting11%

“No directions in the box”

Lubrication11%

“Is it just me or is everyone checking Gl-4 vs this Gl-5 lube”

Advertised Vs Actual Product11%

“but the 3/8 swivel adapter is NOT a swivel as the description says”

Assembly/Installation11%

“Could be a little easier to screw on”

Durability6%

“Broke on first use”

Quality-Overall6%

“Junk”

Ease Of Cleaning6%

“What a mess”

Value For Money6%

“just wish it were cheaper”

Top return reasons

  • Value For Money22%
  • Advertised Vs Actual Product18%
  • Size-Overall16%
  • Leak-Proof13%
  • Compatibility-Overall10%
  • Functionality-Overall5%
  • Motor Issues3%
  • Defective Material/Parts2%
  • Product Condition2%
  • Lubrication1%

Data scraped July 9, 2026 · Marketplace baseline: 4.4★ avg rating · $22.72 median price · 2.2% median returns across 14,725 tracked niches.