---
title: "Auxiliary Fuel Tank Diesel Truck — $112K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/auxiliary-fuel-tank-diesel-truck"
last_updated: "2026-08-09T15:58:07.841Z"
locale: en
meta:
description: "Niche score 52/100 · $112K/yr market · 82K searches/yr. Pricing outside the sweet spot ($805.64 avg) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · $112K/yr market · 82K searches/yr. Pricing outside the sweet spot ($805.64 avg) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Auxiliary Fuel Tank Diesel Truck — $112K/yr Amazon US Niche (2026) - Flapen"
---
# **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.
Market size 27Growth 25Conversion 2Competition 95Returns 83Price range 0Avg price 0Brand share 71Review moat 98Quality gap 95
**Review moat**
**Incredible****49.14**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Incredible****19%**
top-5 click share — an open shelf
**Quality gap**
**Incredible****4.0★**
avg incumbent rating — lower means beatable quality
**Returns**
**Great****1.6%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****62%**
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**
**Bad****0.2%**
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**](https://flapen.com/research/niches?market=us&signal=quality_gap "Avg rating < 4.0") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
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 ~~](https://flapen.com/research/methodology)
## **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.
5K3KSpike '24Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Oct · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/automotive/auxiliary-fuel-tank-diesel-truck/trend)
## **Top auxiliary fuel tank diesel truck search terms**
- **100 gallon fuel tank**17K/yr-10.6%0.4% conv. - **fuel tank tool box combo**13K/yr-12.2%0.3% conv. - **100 gallon fuel tank with pump**6K/yr+49.2%0.3% conv. - **50 gallon fuel tank with pump**5K/yr+84.4%0.3% conv. - **100 gallon fuel transfer tank**8K/yr-29.3%0.7% conv. - **slip tank for truck**6K/yr-18.9%0.1% conv. - **aluminum transfer tank**5K/yr+16.4%0.3% conv. - **100 gallon gas tank**5K/yr-12.5%0.2% conv. - **aux fuel tank diesel**5K/yr-4.5%0.4% conv. - **50 gallon fuel transfer tank**4K/yr+8.2%0.3% conv. [**All search terms **](https://flapen.com/research/us/automotive/auxiliary-fuel-tank-diesel-truck/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.
0%2%$2K4%$4K6%$7K8%$9K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**VEVOR Portable Diesel Tank 116 Gallon Black**VEVOR**$749.10**4.3★152 rev](https://www.amazon.com/dp/B0BL2GT92R) [2**Dee Zee DZ91753SB (106 gallon) Rectangle Transfer Tank - Black Steel**DEE ZEE**$735.03**3.9★32 rev](https://www.amazon.com/dp/B001OCXHWQ) [3**Dee Zee DZ92556NSB Transfer Tank**DEE ZEE**$522.46**4.4★183 rev](https://www.amazon.com/dp/B078J8HCWD) [4**Better Built 29211677 Transfer Tank**Better Built**$682.91**3.1★17 rev](https://www.amazon.com/dp/B01C5INOR0) [5**Dee Zee DZ92647SB (92 gallon) Black Steel Combo Transfer Tank & Tool Box**DEE ZEE**$1200.75**4.0★72 rev](https://www.amazon.com/dp/B01IJDFG30)
**~~View all top sellers →~~**
### **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**$1077.64**3 rev5mo ago](https://www.amazon.com/dp/B0GGGJLTZX) [**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**$449.75**25 rev6mo ago](https://www.amazon.com/dp/B0GBTP5V8N) [**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**$449.80**25 rev6mo ago](https://www.amazon.com/dp/B0GBSYGCH2) [**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**$783.80**3 rev9mo ago](https://www.amazon.com/dp/B0FRR1FX98) [**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**$821.61**343 rev1y ago](https://www.amazon.com/dp/B0F9NX5RL2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**60 Gallon Aluminum Fuel Transfer Tank Tool Box Combo with 12 GPM Pump L-Shape Fuel Tank for Gasoline Diesel Black**Vigorighter**$1077.64**4.4★**▲ 212%**](https://www.amazon.com/dp/B0GGGJLTZX) [**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**$449.80**4.0★**▲ 129%**](https://www.amazon.com/dp/B0GBSYGCH2) [**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**$449.75**4.0★**▲ 86%**](https://www.amazon.com/dp/B0GBTP5V8N) [**Dee Zee DZ92647B Black (92 gallon) Black Aluminum Combo Transfer Tank & Tool Box**DEE ZEE**$1521.78**4.0★**▲ 47%**](https://www.amazon.com/dp/B01IJDFUA4) [**VEVOR Portable Diesel Tank 116 Gallon Capacity & 10 GPM Flow Rate Diesel Fuel with 12V Electric Transfer Pump and 13.1ft Rubber Hose PE Transfer Tank for Easy Fuel Transportation Gray**VEVOR**$762.28**4.3★**▲ 39%**](https://www.amazon.com/dp/B0BL7CYRNW)
**~~View all trending →~~**
## **What buyers say about auxiliary fuel tank diesel truck**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“Excellent product”*
**Advertised Vs Actual Product**10%
*“works as advertised”*
**Fuel Efficiency**9%
*“Great fuel pump”*
**Leak-Proof**7%
*“Doesn't leak and serves my purpose”*
**Value For Money**7%
*“Best bang for your buck”*
**Assembly/Installation**6%
*“Simple and easy to assemble”*
**Ease Of Use**5%
*“Easy to use”*
**Size-Overall**4%
*“Perfect fit”*
**Strength**4%
*“Tank pretty well built”*
**Durability**3%
*“The plastic is durable”*
### **What buyers complain about **
**Leak-Proof**16%
*“Leaks gasoline”*
**Quality-Overall**12%
*“Very disappointed with the quality control”*
**Mounting**6%
*“the mounting bracket is also bent upon arrival”*
**Fuel Efficiency**6%
*“The fuel gauge would not work”*
**Value For Money**6%
*“A bit expensive”*
**Advertised Vs Actual Product**5%
*“False advertising”*
**Size-Overall**4%
*“And the dimensions are wayyy off”*
**Instructions/User Manual/Troubleshooting**4%
*“Nothing in the owners manual about this”*
**Noise Level**3%
*“super loud and annoying”*
**Maintenance And Repair**2%
*“I had to repair it”*
### **Top return reasons **
**Size-Overall**17%
**Leak-Proof**14%
**Defective Material/Parts**13%
**Compatibility-Overall**8%
**Advertised Vs Actual Product**5%
**Fuel Efficiency**4%
**Assembly/Installation**4%
**Mounting**3%
**Value For Money**3%
**Width**2%
## **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.
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