fuel injector o ring kit
Worth a lookShows a fragmented shelf (top 5 take 29% of clicks), but a small market ($73K/yr) keeps it on the watch list.
Competition
Great29%top-5 click share — an open shelf
Brand share
Great56%top-5 brand share — no brand owns this niche
Review moat
Great426.62avg incumbent reviews — the moat a new listing must climb
Avg price
Great$16.33avg listing price — sweet spot $15–$100
Price range
Good$4.61–$119.38cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Good2.7%return rate — above 5% kills the launch gate
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Conversion
Okay3.1%search→purchase rate — share of searches ending in a sale
Growth
Bad-11.3%90-day search growth — must beat 0% to launch
Market size
Bad$73K$73K/yr · 144K searches
According to Flapen's Amazon United States niche tracking, fuel injector o ring kit is a $73K/yr Amazon United States market (144K searches/yr). The top 5 brands hold 56% of demand. Verdict: Worth a look — 53/100.
Data updated Jul 10, 2026 · scored weekly · How we score niches
fuel injector o ring kit market data
- Units sold / yr
- 5K–6K
- avg 0–100/product
- Revenue / yr
- $82K–$98K
- units × avg price
- Conversion rate
- 3.1%
- Avg BSR
- #147
- Page quality
- 0%
- Prime
- 93%
- Sponsored
- 69%
- Out of stock
- 2.5%
- Avg brand age
- 39 months
- Avg seller age
- 176 days
Competition & brand share
Clicks spread well past the top 5 (29% combined) — an open shelf where new products get seen.Brands
28 flat
Sellers
76
Top-5 brand share
56%
Top 20: 95%
Top-5 click share
29%
Top 20: 68%
Open market
39%
- Fel-Pro25%
- HiSport14%
- JA&MIU7%
- GB Remanufacturing5%
- GM GENUINE PARTS5%
- Beck/Arnley5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -11.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top fuel injector o ring kit search terms
- fuel injector o ring kit36K/yr
- fuel injector seal kit22K/yr
- fuel injector o rings23K/yr
- fuel injector rebuild kit13K/yr
- injector seal kit9K/yr
- injector o rings9K/yr
- fuel injector o ring6K/yr
- injector o ring kit5K/yr
- fuel injector seals5K/yr
- injector seals6K/yr
Top fuel injector o ring kit products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
FEL-PRO ES 70599 Fuel Injector O-Ring Kit for Ford F-150
Fel-Pro$5.144.5★1,286 rev
FEL-PRO ES 72311 Fuel Injector O-Ring Kit
Fel-Pro$7.524.5★98 rev
GB Remanufacturing 8-024A Fuel Injector Seal Kit
GB Remanufacturing$5.894.2★391 rev
HiSport Fuel Injector Seal Kits Compatible with Ford Lincoln Mercury Vehicles - 4.6L 5.0L 5.4L 5.8L - E150 E250 E350 F150 F250 F350 Replace Part 0280150943 0280150939 0280150909
HiSport$11.474.5★70 rev
RARAYC 50 PCS FKM Fuel Injector O-Ring Set 7.52mm X 3.53 mm Universal Repair Kit for Various Vehicle Model Blue Compatible with IWP043 IWP063 IWP069 IWP181 0280158233 0280158091
RARAYC$12.204.7★43 rev
Newest
by launch date
JA&MIU 10 PCS Fuel Injector O-Ring Set Blue Viton O-Ring Injector Rebuild Kit Universal Repair Kit for Various Vehicle Model (7.52mm X 3.53 mm)
JA&MIU$8.4326 rev
RARAYC 50 PCS FKM Fuel Injector O-Ring Set 7.52mm X 3.53 mm Universal Repair Kit for Various Vehicle Model Blue Compatible with IWP043 IWP063 IWP069 IWP181 0280158233 0280158091
RARAYC$12.2043 rev
AUTO OCCASION Automotive Fuel Injector Seal Kit Compatible with 2016-2019 Buick Encore Chevrolet Cruze Equinox Malibu 2018-2020 GMC Terrain Replace 55577403
AUTO OCCASION$19.6321 rev
JA&MIU 20 PCS Fuel Injector O-Ring Set O-Ring Injector Rebuild Kit Universal Repair Kit for Various Vehicle Model Replacement 217-1588 Fuel Injector O-Ring Seal Kit for GM
JA&MIU$10.0820 rev
HiSport Fuel Injector Seal Kits Compatible with Ford Lincoln Mercury Vehicles - 4.6L 5.0L 5.4L 5.8L - E150 E250 E350 F150 F250 F350 Replace Part 0280150943 0280150939 0280150909
HiSport$11.4770 rev
Trending
90-day click momentumJA&MIU 10 PCS Fuel Injector O-Ring Set Blue Viton O-Ring Injector Rebuild Kit Universal Repair Kit for Various Vehicle Model (7.52mm X 3.53 mm)
JA&MIU$8.434.6★
AUTO OCCASION Automotive Fuel Injector Seal Kit Compatible with 2016-2019 Buick Encore Chevrolet Cruze Equinox Malibu 2018-2020 GMC Terrain Replace 55577403
AUTO OCCASION$19.634.3★
RARAYC 50 PCS FKM Fuel Injector O-Ring Set 7.52mm X 3.53 mm Universal Repair Kit for Various Vehicle Model Blue Compatible with IWP043 IWP063 IWP069 IWP181 0280158233 0280158091
RARAYC$12.204.7★
JA&MIU 20 PCS Fuel Injector O-Ring Set O-Ring Injector Rebuild Kit Universal Repair Kit for Various Vehicle Model Replacement 217-1588 Fuel Injector O-Ring Seal Kit for GM
JA&MIU$10.084.6★
XBVV 1020 Pcs O Ring Kit 20 Size Nitrile Rubber O Ring Assortment Set for Car Auto Vehicle Repair Faucet Plumbing Air or Gas Sealing Connections Resist Oil and Heat
XBVV$9.114.6★
What buyers say about fuel injector o ring kit
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product”
“Fits like it should”
“Good Deal”
“As advertised”
“Handy”
“Worked with fuel injector replacement on prius”
“Fit,longevity”
“No leaks”
“Large selection”
“Works good”
What buyers complain about
“particularly the very small sizes”
“quality control is lacking”
“Does not fit 1989 Honda CRX si 1.6L”
“I wish I had bought the thicker ones”
“Inaccurate website description”
“Waste of money”
“They are not good material”
“Thoughtfully put together, I normally dont work with these types of devices and never have”
“Leaks at injector/fuel rail seal”
“All o rings were black color”
Top return reasons
Common questions
- Is fuel injector o ring kit profitable to sell on Amazon United States?
- The niche generates $73K/yr across 58 tracked products. 1 of 6 products launched in the last 360 days are still selling. 90-day search growth is -11.3%. Flapen's verdict: Worth a look (53/100).
- How competitive is the fuel injector o ring kit niche?
- 28 brands and 76 sellers compete. The top 5 products take 29% of clicks and top 5 brands hold 56% of demand.
- What do buyers complain about in fuel injector o ring kit?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Compatibility-Overall. The return rate is 2.7%.
- When does demand for fuel injector o ring kit peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the fuel injector o ring kit niche?
- Listings span $4.61–$119.38; the average listing price is $16.33 (sweet spot $15–$100). The average incumbent carries 427 reviews — the moat a new listing must climb.