Is 5/16 fuel filter profitable to sell on Amazon United States?

The niche generates $85K/yr across 26 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is +29.3%. Flapen's verdict: Worth a look (59/100).

How competitive is the 5/16 fuel filter niche?

23 brands and 55 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 58% of demand.

What do buyers complain about in 5/16 fuel filter?

Top complaints mined from reviews: Filtration, Quality-Overall, Leak-Proof. The return rate is 1.0%.

When does demand for 5/16 fuel filter peak?

Demand peaks in Apr–May; the busiest month runs 2.1× the quietest.

What does it cost to enter the 5/16 fuel filter niche?

Listings span $6.28–$19.34; the average listing price is $10.50 (sweet spot $15–$100). The average incumbent carries 518 reviews — the moat a new listing must climb.

5/16 fuel filter

Worth a look

Shows low returns (1.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Great1.0%

return rate — above 5% kills the launch gate

Conversion

Great9.9%

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

Brand share

Great58%

top-5 brand share — no brand owns this niche

Review moat

Good517.92

avg incumbent reviews — the moat a new listing must climb

Competition

Good48%

top-5 click share — leaders hold, buyers still browse

Growth

Good+29.3%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Avg price

Okay$10.50

avg listing price — sweet spot $15–$100

Price range

Okay$6.28–$19.34

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

Market size

Bad$85K

$85K/yr · 82K searches

According to Flapen's Amazon United States niche tracking, 5/16 fuel filter is a $85K/yr Amazon United States market (82K searches/yr). The top 5 brands hold 58% of demand. Demand peaks in Apr–May. Verdict: Worth a look — 59/100.

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

5/16 fuel filter market data

Units sold / yr: 8K–10K; avg 100–250/product
Revenue / yr: $84K–$105K; units × avg price
Conversion rate: 9.9%
Avg BSR: #330
Page quality: 0%
Prime: 100%
Sponsored: 77%
Out of stock: 4.6%
Avg brand age: 51 months
Avg seller age: 187 days

Competition & brand share

The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.

Brands

23 falling

Sellers

Top-5 brand share

58%

Top 20: 97%

Top-5 click share

48%

Top 20: 94%

Open market

37%

Wix23%
smseace17%
K&N8%
Wfdams5%
Strongthium5%
Podavelle5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +29.3% search growth over the last 90 days.

Peak months: Apr, May · busiest ÷ quietest = 2.1×

Open Trend

Top 5/16 fuel filter search terms

5/16 fuel filter51K/yr +35.2%8.5% conv.
5/16 inline fuel filter10K/yr +40.2%9.7% conv.
inline fuel filter 5/167K/yr +0.8%9.1% conv.
fuel filter 5/165K/yr +13.4%10.1% conv.
in line fuel filter 5/16 inch4K/yr +6.2%8.1% conv.
5/16 fuel filter inline3K/yr +23.0%10.9% conv.
5 16 fuel filter2K/yr +33.7%1.8% conv.

All search terms

Top 5/16 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.

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

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

smseace 4Pcs 5/16 Inch fuel filter inline with 8Pcs Hose Clamps in line fuel filter 5/16 Inch for Motorcycles Car Trucks 5/16 Inch Inline Fuel Filter

smseace$9.934.2★421 rev

WIX Racing Filters Fuel Filter

Wix$6.284.7★1,244 rev

WIX 33012 Universal Metal In-Line Fuel Filter Replacement with 5/16 Inlet and Oulet - Gasoline Only (20 Micron)

Wix$7.104.6★86 rev

K&N 81-0300 Replacement Fuel Filter

K&N$9.214.5★3,954 rev

WIX 33002 Universal Plastic In-Line Fuel Filter Replacement with 5/16 Inlet and Oulet - Gasoline Only (20 Micron)

Wix$7.854.7★487 rev

Newest

by launch date

Strongthium 5/16 Inline Fuel Filter Clear Fits for Riding Lawn Mower Tractor Generator Go Kart Mini Dirt Bike Motorcycle Car

Strongthium$10.014 rev

6mo ago

WFDAMS 5/16 Fuel Filter Inline Reusable Washable Aluminum Gas Fuel Filter with Clear Glass for Small Engine Motorcycle ATV Lawn Mower Boat (Non Fuel Injected)

Wfdams$7.3638 rev

6mo ago

CNRAQR 5/16 Fuel Filters 178 Micron Removable Black Anodized Aluminum

CNRAQR$9.9899 rev

8mo ago

5 Sets 5/16 Inch Fuel Filter Inline 5/16 Fuel Filter Universal Gas Inline Fuel Filters Gas Fueled Filter for Tractors Cars Trucks Motorcycles Rv

Tucnoeu$10.3911 rev

9mo ago

5/16 & 1/4 Inline Magnetic Fuel Filter for Lawn Mower Small Engine Kohler John Deere Kawasaki - High Flow Gas Filter with Magnet Replacement (12-Pack)

WYTUDTE$9.10113 rev

1y ago

What buyers say about 5/16 fuel filter

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

What buyers love

Filtration20%

“Great filter”

Quality-Overall15%

“Decent quality”

Value For Money14%

“Good for the price”

Advertised Vs Actual Product10%

“As advertised”

Size-Overall9%

“The fit is solid”

Leak-Proof4%

“Didn't leak”

Fuel Efficiency3%

“provided clean fuel to lawnmower engine”

Efficiency2%

“Works very well”

Assembly/Installation2%

“Easy install”

Design-Overall2%

“Nicely built”

What buyers complain about

Filtration19%

“Bad filter”

Quality-Overall14%

“Quality control is lacking”

Leak-Proof13%

“This product leaks”

Durability10%

“Do not last”

Size-Overall8%

“it is smaller”

Fuel Efficiency3%

“Dirty fuel is a big problem with small engines”

Value For Money2%

“not worth the money”

Adhesion/Stickiness2%

“Internal glue failure”

Material Quality1%

“Bad materials bad quality do not waste your $”

Advertised Vs Actual Product1%

“buried way down in the product ad”

Top return reasons

Size-Overall71%

Filtration11%

Compatibility-Overall5%

Advertised Vs Actual Product3%

Defective Material/Parts1%

Leak-Proof1%

Fuel Efficiency1%