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onan 5500 oil change kit

Skip it44/100

a small market ($134K/yr) — onan 5500 oil change kit doesn't clear our bar today.

Market/yr

$134K

Growth (1y)

+109.7%

Products

16

Brands

12

was 10 a year ago

Sellers

55

Price range

$16.24–$151.91

Returns

0.8%

Rating

4.5★

44/100

Skip it

Scored 44/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns
Market size
7
×0.30
Growth
66
×0.30
Competition
43
×0.20
Quality gap
37
×0.10
Returns
94
×0.10

Demand

Weekly Amazon search volume, last 104 weeks — +109.7% year over year.
1K685Spike '25Prime Day '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26

Seasonality

Monthly demand index across the year — 1.00 is average.

Peak months: Jul, Aug · busiest ÷ quietest = 3.3×

Competition

34%GPS
  • GPS34%
  • Cummins22%
  • ATRACYPART13%
  • RARAYC8%
  • ZJTBLL6%
  • AULDAY5%
  • Other (6 brands)13%

The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them. 12 brands and 55 sellers compete here.

Brands

12 rising

was 10 a year ago

Sellers

55

Top 5 brand share

82%

#ProductBrandPriceRatingReviewsClick shareTrend
3Cummins$16.244.8★1,05812%rising

Product shelf

All 16 tracked products in this niche.

Reviews

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

What buyers love

Size-Overall21%

“Everything fit perfectly”

Quality-Overall19%

“This is a quality kit”

Value For Money16%

“Worth Having”

Advertised Vs Actual Product12%

“Worked as described”

Ease Of Use8%

“Worked great and was easy to use”

Correct Contents4%

“Perfect kit”

Maintenance And Repair4%

“It's a complete kit with everything you need to do routine maintenance”

Motor Power3%

“Generator runs great”

Assembly/Installation3%

“straightforward installation”

Filtration2%

“The air filter seems to be of good quality”

What buyers complain about

Filtration26%

“Dont trust the fuel filter”

Size-Overall22%

“This kit does NOT fit the 7000 at all not even close”

Quality-Overall17%

“The air filter is the worst quality”

Advertised Vs Actual Product6%

“Parts did not match description”

Compatibility-Overall3%

“Not compatible”

Functionality-Overall3%

“Generator still not working”

Defective Material/Parts3%

“Was not all correct pieces for our generator”

Leak-Proof2%

“The other adapter nipples did not so after my first install I had to take it apart again to put on Teflon because it had a slow leak”

Top return reasons

  • Size-Overall29%
  • Filtration13%
  • Defective Material/Parts12%
  • Leak-Proof11%
  • Advertised Vs Actual Product10%
  • Value For Money6%
  • Compatibility-Overall4%
  • Assembly/Installation4%
  • Lubrication4%
  • Functionality-Overall3%

Data scraped July 9, 2026 · Marketplace baseline: 4.4★ avg rating · $22.66 median price · 2.2% median returns across 14,418 tracked niches.