Is auxiliary fuel tank diesel truck profitable to sell on Amazon United States?

The niche generates $112K/yr across 105 tracked products. 16 of 28 products launched in the last 360 days are still selling. 90-day search growth is +0.2%. Flapen's verdict: Worth a look (52/100).

How competitive is the auxiliary fuel tank diesel truck niche?

35 brands and 105 sellers compete. The top 5 products take 19% of clicks and top 5 brands hold 62% of demand.

What do buyers complain about in auxiliary fuel tank diesel truck?

Top complaints mined from reviews: Leak-Proof, Quality-Overall, Mounting. The return rate is 1.6%.

When does demand for auxiliary fuel tank diesel truck peak?

Demand peaks in Oct; the busiest month runs 1.6× the quietest.

What does it cost to enter the auxiliary fuel tank diesel truck niche?

Listings span $161.45–$2150.12; the average listing price is $805.64 (sweet spot $15–$100). The average incumbent carries 49 reviews — the moat a new listing must climb.

auxiliary fuel tank diesel truck

Worth a look

Shows a thin review moat (49 avg reviews), but pricing outside the sweet spot ($805.64 avg) keeps it on the watch list.

Review moat

Incredible49.14

avg incumbent reviews — the moat a new listing must climb

Competition

Incredible19%

top-5 click share — an open shelf

Quality gap

Incredible4.0★

avg incumbent rating — lower means beatable quality

Returns

Great1.6%

return rate — above 5% kills the launch gate

Brand share

Good62%

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

Market size

Okay$112K

$112K/yr · 82K searches

Growth

Okay+0.2%

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

Conversion

Bad0.2%

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

Avg price

Bad$805.64

avg listing price — sweet spot $15–$100

Price range

Bad$161.45–$2150.12

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

Signals Quality Gap High Price

According to Flapen's Amazon United States niche tracking, auxiliary fuel tank diesel truck is a $112K/yr Amazon United States market (82K searches/yr). The top 5 brands hold 62% of demand. Demand peaks in Oct. Verdict: Worth a look — 52/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

auxiliary fuel tank diesel truck market data

Units sold / yr: 250–500; avg 0–100/product
Revenue / yr: $201K–$403K; units × avg price
Conversion rate: 0.2%
Avg BSR: #355
Page quality: 0%
Prime: 49%
Sponsored: 58%
Out of stock: 12.3%
Avg brand age: 51 months
Avg seller age: 190 days

Competition & brand share

Clicks spread well past the top 5 (19% combined) — an open shelf where new products get seen.

Brands

35 flat

Sellers

105

Top-5 brand share

62%

Top 20: 93%

Top-5 click share

19%

Top 20: 48%

Open market

34%

DEE ZEE21%
VEVOR18%
RDS MFG INC11%
Better Built6%
Wolive6%
LAPPPLSP4%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +0.2% search growth over the last 90 days.

Peak months: Oct · busiest ÷ quietest = 1.6×

Open Trend

Top auxiliary fuel tank diesel truck search terms

100 gallon fuel tank17K/yr -10.6%0.4% conv.
fuel tank tool box combo13K/yr -12.2%0.3% conv.
100 gallon fuel tank with pump6K/yr +49.2%0.3% conv.
50 gallon fuel tank with pump5K/yr +84.4%0.3% conv.
100 gallon fuel transfer tank8K/yr -29.3%0.7% conv.
slip tank for truck6K/yr -18.9%0.1% conv.
aluminum transfer tank5K/yr +16.4%0.3% conv.
100 gallon gas tank5K/yr -12.5%0.2% conv.
aux fuel tank diesel5K/yr -4.5%0.4% conv.
50 gallon fuel transfer tank4K/yr +8.2%0.3% conv.

All search terms

Top auxiliary fuel tank diesel truck 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★)1 product missing review or click data not plotted

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

Top sellers

by 90-day click share

VEVOR Portable Diesel Tank 116 Gallon Black

VEVOR$749.104.3★152 rev

Dee Zee DZ91753SB (106 gallon) Rectangle Transfer Tank - Black Steel

DEE ZEE$735.033.9★32 rev

Dee Zee DZ92556NSB Transfer Tank

DEE ZEE$522.464.4★183 rev

Better Built 29211677 Transfer Tank

Better Built$682.913.1★17 rev

Dee Zee DZ92647SB (92 gallon) Black Steel Combo Transfer Tank & Tool Box

DEE ZEE$1200.754.0★72 rev

Newest

by launch date

60 Gallon Aluminum Fuel Transfer Tank Tool Box Combo with 12 GPM Pump L-Shape Fuel Tank for Gasoline Diesel Black

Vigorighter$1077.643 rev

5mo ago

Portable 50 Gallon Fuel Tank with Pump for Diesel Portable Fuel Tank with 12V Electric Fuel Transfer Pump and 15ft Rubber Hose 11.9 GPM Flow Rate Diesel Fuel Transfer Tank for Transportation (Orange)

Wolive$449.7525 rev

6mo ago

Portable 50 Gallon Fuel Tank with Pump for Diesel Portable Fuel Tank with 12V Electric Fuel Transfer Pump and 15ft Rubber Hose 11.9 GPM Flow Rate Diesel Fuel Transfer Tank for Transportation (Black)

Wolive$449.8025 rev

6mo ago

116 Gallon Portable Diesel & Gasoline Tank with 12V Electric Pump 13Ft Hose & Auto Shut-Off Nozzle Heavy Duty Fuel Storage Tank for Truck Tractor Generator ATV Marine & Construction Use - Red

ExploreHorizon$783.803 rev

9mo ago

VEVOR Portable Diesel & Gasoline Tank 116 Gallon 10 GPM Flow Rate Gasoline Fuel Tank with 12V Electric Transfering Pump 13.1ft Hose Auto Fueling Nozzle Transfer Tank for Easy Transportation Red

VEVOR$821.61343 rev

1y ago

What buyers say about auxiliary fuel tank diesel truck

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

What buyers love

Quality-Overall18%

“Excellent product”

Advertised Vs Actual Product10%

“works as advertised”

Fuel Efficiency9%

“Great fuel pump”

Leak-Proof7%

“Doesn't leak and serves my purpose”

Value For Money7%

“Best bang for your buck”

Assembly/Installation6%

“Simple and easy to assemble”

Ease Of Use5%

“Easy to use”

Size-Overall4%

“Perfect fit”

Strength4%

“Tank pretty well built”

Durability3%

“The plastic is durable”

What buyers complain about

Leak-Proof16%

“Leaks gasoline”

Quality-Overall12%

“Very disappointed with the quality control”

Mounting6%

“the mounting bracket is also bent upon arrival”

Fuel Efficiency6%

“The fuel gauge would not work”

Value For Money6%

“A bit expensive”

Advertised Vs Actual Product5%

“False advertising”

Size-Overall4%

“And the dimensions are wayyy off”

Instructions/User Manual/Troubleshooting4%

“Nothing in the owners manual about this”

Noise Level3%

“super loud and annoying”

Maintenance And Repair2%

“I had to repair it”

Top return reasons

Size-Overall17%

Leak-Proof14%

Defective Material/Parts13%

Compatibility-Overall8%

Advertised Vs Actual Product5%

Fuel Efficiency4%

Assembly/Installation4%

Mounting3%

Value For Money3%

Width2%

Common questions

Is auxiliary fuel tank diesel truck profitable to sell on Amazon United States?: The niche generates $112K/yr across 105 tracked products. 16 of 28 products launched in the last 360 days are still selling. 90-day search growth is +0.2%. Flapen's verdict: Worth a look (52/100).
How competitive is the auxiliary fuel tank diesel truck niche?: 35 brands and 105 sellers compete. The top 5 products take 19% of clicks and top 5 brands hold 62% of demand.
What do buyers complain about in auxiliary fuel tank diesel truck?: Top complaints mined from reviews: Leak-Proof, Quality-Overall, Mounting. The return rate is 1.6%.
When does demand for auxiliary fuel tank diesel truck peak?: Demand peaks in Oct; the busiest month runs 1.6× the quietest.
What does it cost to enter the auxiliary fuel tank diesel truck niche?: Listings span $161.45–$2150.12; the average listing price is $805.64 (sweet spot $15–$100). The average incumbent carries 49 reviews — the moat a new listing must climb.