1/4 fuel filter
Worth a lookShows low returns (0.9%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Conversion
Great9.2%search→purchase rate — share of searches ending in a sale
Brand share
Great53%top-5 brand share — no brand owns this niche
Growth
Great+62.6%90-day search growth — must beat 0% to launch
Review moat
Good645.95avg incumbent reviews — the moat a new listing must climb
Competition
Good43%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Market size
Okay$212K$212K/yr · 257K searches
Price range
Okay$4.75–$19.70cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Okay$8.98avg listing price — sweet spot $15–$100
According to Flapen's Amazon United States niche tracking, 1/4 fuel filter is a $212K/yr Amazon United States market (257K searches/yr). The top 5 brands hold 53% of demand. Demand peaks in Mar–Apr–May–Jun. Verdict: Worth a look — 65/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
1/4 fuel filter market data
- Units sold / yr
- 25K–30K
- avg 250–500/product
- Revenue / yr
- $225K–$269K
- units × avg price
- Conversion rate
- 9.2%
- Avg BSR
- #110
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 84%
- Out of stock
- 3.5%
- Avg brand age
- 45 months
- Avg seller age
- 178 days
Competition & brand share
The top 5 products take 43% of clicks — established leaders, but buyers still shop beyond them.Brands
27 falling
Sellers
72
Top-5 brand share
53%
Top 20: 92%
Top-5 click share
43%
Top 20: 81%
Open market
43%
- Strongthium15%
- CocoMocart14%
- MEAJOO8%
- Snwoygr8%
- Briggs & Stratton7%
- WYTUDTE5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +62.6% search growth over the last 90 days.Peak months: Mar, Apr, May, Jun · busiest ÷ quietest = 4.1×
Top 1/4 fuel filter search terms
- 1/4 fuel filter57K/yr
- lawn mower fuel filter33K/yr
- fuel filter for lawn mower16K/yr
- small engine fuel filter30K/yr
- briggs and stratton fuel filter16K/yr
- 1/4 inline fuel filter13K/yr
- mower fuel filter9K/yr
- lawnmower fuel filter10K/yr
- in line fuel filter 1/411K/yr
- 1/4 inch fuel filter8K/yr
Top 1/4 fuel filter 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
CocoMocart 10 Pack 1/4 Inch Inline Fuel Filter for Kawasaki Briggs & Stratton Kohler Engines - Universal Replacement Gasoline Filters with Magnet 1/4 and 5/16 For John Deere
CocoMocart$9.954.4★2,127 rev
Strongthium 691035 1/4 Inline Fuel Filter Kit for Briggs and Stratton Engine Kawasaki 490190027 493629 84001895 80025019 Toro Craftsman MTD Kawasaki Snapper Lawn Tractor Generator 40 Micron
Strongthium$6.914.6★545 rev
MEAJOO 6PCS 1/4 Inch Gas Inline Fuel Filters with magnet Universal for Stratton Small Engine Kohler Kawasaki Birggs John Deere Gasoline Generator Lawn Mower Motorcycle
MEAJOO$5.964.2★200 rev
Snwoygr 10 PCS Gas Inline Fuel Filters with Magnet for Kawasaki Kohler John Deere Lawn Mower Small Engine Third Generation Universal Replacement Fuel Filter for 1/4 IN and 5/16 IN
Snwoygr$6.814.4★612 rev
Briggs & Stratton OEM 691035 691035-2 Fuel Filters (2 Pack) 121S02-0001-F1 121S02-0023-F1 121S02-0026-F1 121S02-0130-F1 121S02-0130-F2 121S07-0006-F1 121S07-0024-F1 121S07-0027-F1 121S17-0127-F1
Briggs & Stratton$12.804.6★1,800 rev
Newest
by launch date
TRHSIFF 10 PCS 1/4 Inch and 5/16 Inch Gas Inline Fuel Filters with Magnet for Kawasaki Kohler John Deere Lawn Mower Small Engine Upgrade Universal Replacement Fuel Filter with 10 Clips
TRHSIFF$7.3196 rev
Podavelle 1/4 Billet Inline Fuel Filter 30 Micron Aluminum Black
Podavelle$19.70193 rev
Inline Fuel Filter for Lawn Mower Small Engine Kohler John Deere Kawasaki - Gas Filter Replacement with High Flow Design (12-Pack)
WYTUDTE$8.33103 rev
Panari 1/4 Inline Fuel Filter Kit for Brigs and Straton 691035 493629 for Kawasaki 49019-7001 49019-0027 Kohler 2505007S 2505021S Craftsman Toro Lawnmower Ffuel Filter Parts
Panari$6.41108 rev
YAMAKATO 1/4 Inline Copper Fuel Filters for Dirt Mini Bike ATV Motorcycle UTV Snowmobile more with 1/4 fuel lines 2pcs with 2 clamps
YAMAKATO$6.9597 rev
Trending
90-day click momentumTRHSIFF 10 PCS 1/4 Inch and 5/16 Inch Gas Inline Fuel Filters with Magnet for Kawasaki Kohler John Deere Lawn Mower Small Engine Upgrade Universal Replacement Fuel Filter with 10 Clips
TRHSIFF$7.314.4★
Panari 1/4 Inline Fuel Filter Kit for Brigs and Straton 691035 493629 for Kawasaki 49019-7001 49019-0027 Kohler 2505007S 2505021S Craftsman Toro Lawnmower Ffuel Filter Parts
Panari$6.414.1★
Briggs and Stratton 394358S Fuel Filter - 75 Micron - 2 Pack
Briggs & Stratton$8.264.7★
WIX Racing Filters Fuel Filter
Wix$6.284.7★
MEAJOO 6PCS 1/4 Inch Gas Inline Fuel Filters with magnet Universal for Stratton Small Engine Kohler Kawasaki Birggs John Deere Gasoline Generator Lawn Mower Motorcycle
MEAJOO$5.964.2★
What buyers say about 1/4 fuel filter
What buyers praise and complain about, mined from review topics.What buyers love
“the air filter for perfect”
“Decent quality”
“Great Value”
“As advertised”
“Fit great”
“Works well”
“Keep your fuel clean”
“Just as described; installed and worked as expected”
“Didnt leak,”
“So far its holding up well”
What buyers complain about
“Leaked”
“Filters not made well”
“no quality control”
“Does Not Fit”
“Cracks easily”
“So loose it leaks fuel”
“Way cheaper”
“Bad materials bad quality do not waste your $”
“Some of these filters either leak or are clogged”
“buried way down in the product ad”
Top return reasons
Common questions
- Is 1/4 fuel filter profitable to sell on Amazon United States?
- The niche generates $212K/yr across 37 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is +62.6%. Flapen's verdict: Worth a look (65/100).
- How competitive is the 1/4 fuel filter niche?
- 27 brands and 72 sellers compete. The top 5 products take 43% of clicks and top 5 brands hold 53% of demand.
- What do buyers complain about in 1/4 fuel filter?
- Top complaints mined from reviews: Leak-Proof, Filtration, Quality-Overall. The return rate is 0.9%.
- When does demand for 1/4 fuel filter peak?
- Demand peaks in Mar–Apr–May–Jun; the busiest month runs 4.1× the quietest.
- What does it cost to enter the 1/4 fuel filter niche?
- Listings span $4.75–$19.70; the average listing price is $8.98 (sweet spot $15–$100). The average incumbent carries 646 reviews — the moat a new listing must climb.