Is 3/16 fuel line profitable to sell on Amazon United States?

The niche generates $112K/yr across 14 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +12.8%. Flapen's verdict: Skip it (47/100).

How competitive is the 3/16 fuel line niche?

13 brands and 16 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 73% of demand.

What do buyers complain about in 3/16 fuel line?

Top complaints mined from reviews: Size-Overall, Durability, Quality-Overall. The return rate is 1.1%.

When does demand for 3/16 fuel line peak?

Demand is steady year-round — the busiest month runs 1.4× the quietest.

What does it cost to enter the 3/16 fuel line niche?

Listings span $6.93–$22.33; the average listing price is $10.36 (sweet spot $15–$100). The average incumbent carries 1,172 reviews — the moat a new listing must climb.

3/16 fuel line

Skip it

A concentrated shelf (top 5 take 73% of clicks) — this niche doesn't clear our bar today.

Conversion

Incredible13.1%

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

Returns

Great1.1%

return rate — above 5% kills the launch gate

Review moat

Good1,172.14

avg incumbent reviews — the moat a new listing must climb

Brand share

Good73%

top-5 brand share — brands hold most of the demand

Price range

Okay$6.93–$22.33

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

Growth

Okay+12.8%

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

Avg price

Okay$10.36

avg listing price — sweet spot $15–$100

Market size

Okay$112K

$112K/yr · 83K searches

Competition

Bad73%

top-5 click share — a locked-up shelf

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, 3/16 fuel line is a $112K/yr Amazon United States market (83K searches/yr). The top 5 brands hold 73% of demand. Verdict: Skip it — 47/100.

Data updated Jul 9, 2026 · scored weekly · How we score niches

3/16 fuel line market data

Units sold / yr: 10K–13K; avg 500–750/product
Revenue / yr: $104K–$130K; units × avg price
Conversion rate: 13.1%
Avg BSR: #22
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 51 months
Avg seller age: 182 days

Competition & brand share

The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.

Brands

13 falling

Sellers

Top-5 brand share

73%

Top 20: 100%

Top-5 click share

73%

Top 20: 100%

Open market

21%

YAMAKATO36%
ALLWIN13%
YS-TM11%
ZONBANG7%
Sunxeke7%
Bullwall6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +12.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top 3/16 fuel line search terms

3/16 fuel line68K/yr +11.7%11.1% conv.
3/16 id fuel line8K/yr +12.7%10.8% conv.
3/16 fuel hose5K/yr +10.2%10.1% conv.
3 16 fuel line3K/yr +63.0%5.0% conv.

All search terms

Top 3/16 fuel line 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 14 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

YAMAKATO 10 Feet 3/16 Inch ID Fuel Line for Kawasaki Kohler Briggs & Stratton Honda Predator Champion Generac Small Engines Mini Bike ATV Generator w/ 20 Clamps

YAMAKATO$10.054.6★4,044 rev

3/16 Inch ID Fuel Line Hose - 10 Feet Fuel Line for Kawasaki Kohler Briggs & Stratton Small Gas Diesel Powersports Engines and Generators w/ 20 Hose Clamps

ALLWIN$7.384.6★106 rev

3/16 Fuel Line 10 Feet with 2Pcs 3/16 Fuel Filters for Kawasaki for honda for Stratton for Predator for Champion Lawn Mower Generator Chainsaws Go-Karts ATV Small Engine

YS-TM$9.094.4★701 rev

ZONBANG 3/16 Fuel Line NBR Rubber 3/16 Fuel Hose Nylon Braided Fuel Line Hose for Automotive Vehicles(5FT)

ZONBANG$6.934.6★324 rev

Sunxeke 10 Feet 3/16 Inch ID Fuel Line with 20Pcs 2/5 Inch ID Hose Clamps for Kawasaki Kohler Champion Briggs & Stratton Small Engines Mini Bike ATV Mowing Machine

Sunxeke$8.924.5★198 rev

Newest

by launch date

YGQ 3/16 Clear Fuel Line Hose Tube 10 Feet Blue for Honda Kawasaki Predator Motorcycle Mini Bike Go Kart ATV Small Engine Parts I.D 3/16 x O.D 5/16 (5 mm x 8 mm)

YGQ$10.0915 rev

5mo ago

Bullwall 10-Feet 3/16 I.D x 5/16 O.D Fuel Line Hose 4.8mm x 8mm PVC High-Performance Fuel Hose Tube for Small Engine Trimmer Lawn Mower Chainsaw Blower Generator Model Parts

Bullwall$10.7383 rev

8mo ago

abliubale 10 Feet 3/16 Inch ID Fuel Line Hose Compatible with Honda Champion Predator Briggs & Stratton Kohler Kawasaki Small Engine Generator Kart Minibike Rubber Fuel Hose with 20 Clamps

abliubale$8.7170 rev

11mo ago

Fuel Line Hose 3/16 ID 20FT With 5PCS Clamps 300PSI High Performance Push Lock Reinforced Rubber NBR Automotive Fuel Line For Lawn Mowers/Cultivator/ATVs Tractors And Other Small Engine Equipment

MSLANE$14.7957 rev

11mo ago

10ft 3/16 ID Fuel Line Hose with 20pcs 5/16 Clamps - Fits Kawasaki Kohler Briggs & Stratton Small Gas/Diesel Engines Generators Powersports - Durable Flexible Rubber Hose Kit

Logosophia$7.24370 rev

1y ago

What buyers say about 3/16 fuel line

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

What buyers love

Quality-Overall32%

“Good variety”

Size-Overall18%

“A selection of sizes included”

Advertised Vs Actual Product12%

“Worked as advertised”

Value For Money10%

“Good value”

Ease Of Use3%

“Many uses”

Fuel Efficiency3%

“Excellent fuel line”

Cutting/Trimming3%

“Easy to cut easy to fit”

Efficiency3%

“Works good”

Flexibility2%

“Flexible, kink free”

Durability2%

“working great - durability of big brand names”

What buyers complain about

Size-Overall18%

“Misleading sizes”

Durability16%

“it was falling apart”

Quality-Overall8%

“Don't settle for cheap garbage”

Leak-Proof8%

“leakage and durability not so good will go soft on hot places”

Color5%

“Clear tube not black tube”

Defective Material/Parts5%

“Quality parts and a ton of fuel line”

Hard Feel5%

“It has turned hard”

Ease Of Use4%

“Cant use them”

Thickness3%

“Very thin tubing we'll see how long it lasts”

Design-Overall3%

“Definitely not designed to be fuel line”

Top return reasons

Size-Overall78%

Advertised Vs Actual Product4%

Quality-Overall4%

Functionality-Overall3%

Defective Material/Parts2%

Material Quality1%

Value For Money1%

Compatibility-Overall1%

Thin1%

Width1%

Common questions

Is 3/16 fuel line profitable to sell on Amazon United States?: The niche generates $112K/yr across 14 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +12.8%. Flapen's verdict: Skip it (47/100).
How competitive is the 3/16 fuel line niche?: 13 brands and 16 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 73% of demand.
What do buyers complain about in 3/16 fuel line?: Top complaints mined from reviews: Size-Overall, Durability, Quality-Overall. The return rate is 1.1%.
When does demand for 3/16 fuel line peak?: Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the 3/16 fuel line niche?: Listings span $6.93–$22.33; the average listing price is $10.36 (sweet spot $15–$100). The average incumbent carries 1,172 reviews — the moat a new listing must climb.