---
title: "Locking Gas Cap — $114K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/locking-gas-cap"
last_updated: "2026-08-10T15:21:34.032Z"
locale: en
meta:
description: "Niche score 48/100 · $114K/yr market · 308K searches/yr · $11.23 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 48/100 · $114K/yr market · 308K searches/yr · $11.23 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Locking Gas Cap — $114K/yr Amazon US Niche (2026) - Flapen"
---
# **locking gas cap**
**Skip it**
High returns (7.6%) — this niche doesn't clear our bar today.
Market size 27Growth 28Conversion 41Competition 54Returns 16Price range 57Avg price 44Brand share 77Review moat 71Quality gap 98
**Quality gap**
**Incredible****3.7★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Great****58%**
top-5 brand share — no brand owns this niche
**Review moat**
**Good****647.07**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Good****$6.71–$25.94**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****53%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Okay****$11.23**
avg listing price — sweet spot $15–$100
**Conversion**
**Okay****3.3%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Okay****+2.3%**
90-day search growth — must beat 0% to launch
**Market size**
**Okay****$114K**
$114K/yr · 308K searches
**Returns**
**Bad****7.6%**
return rate — above 5% kills the launch gate
**Signals**[** Quality Gap**](https://flapen.com/research/niches?market=us&signal=quality_gap "Avg rating < 4.0") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, locking gas cap is a $114K/yr Amazon United States market (308K searches/yr). The top 5 brands hold 58% of demand. Verdict: Skip it — 48/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **locking gas cap market data**
- **Units sold / yr**
- **10K–13K**
- avg 250–500/product
- **Revenue / yr**
- **$112K–$140K**
- units × avg price
- **Conversion rate**
- **3.3%**
- **Avg BSR**
- **#799**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **66%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **36 months**
- **Avg seller age**
- **177 days**
## **Competition & brand share**
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**22 **▲rising
**Sellers**
**56**
**Top-5 brand share**
**58%**
Top 20: 98%
**Top-5 click share**
**53%**
Top 20: 89%
**Open market**
**34%**
- ZONFANT21% - Hirificing10% - SEEBOO9% - Eponcia9% - MotoRad9% - ROVIKE8%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +2.3% search growth over the last 90 days.
9K7KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/automotive/locking-gas-cap/trend)
## **Top locking gas cap search terms**
- **locking gas cap**137K/yr+7.4%2.5% conv. - **gas cap lock**62K/yr+4.1%2.1% conv. - **locking fuel cap**14K/yr+1.7%1.5% conv. - **gas tank lock**11K/yr+9.4%1.7% conv. - **locking gas cap chevy silverado**10K/yr-18.2%3.2% conv. - **gas lock fuel cap with key**9K/yr-3.0%1.7% conv. - **lock gas cap with key**8K/yr+14.1%3.3% conv. - **gas cap with lock**7K/yr+21.9%2.6% conv. - **gas cap with key**8K/yr-28.1%3.3% conv. - **lockable gas cap**6K/yr+6.9%2.5% conv. [**All search terms **](https://flapen.com/research/us/automotive/locking-gas-cap/search-terms)
## **Top locking gas cap 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%10%$11K20%$23K30%$34K40%$46K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**ZONFANT Locking Gas Cap W/2 Keys Lock Fuel Cap Compatible With Chevy Honda Nissan Acura Mazda Cadillac GMC Vehicle 4Runner FJ Cruiser Silverado Camaro And More Replace#10504 77300-47020**ZONFANT**$9.34**4.1★1,271 rev](https://www.amazon.com/dp/B0BBV652FT) [2**Hirificing Locking Gas Cap Fuel Tank with Key Gas Cap Lock Locking Fuel Cap Cover Compatible with Toyota 4Runner Chevy Silverado 1500 2500 3500 Nissan GMC Honda Subaru Buick #10504 77300-47020**Hirificing**$9.82**3.6★808 rev](https://www.amazon.com/dp/B0CSVMWHTP) [3**Eponcia Locking Gas Cap lock Locking Fuel Cap with Key for 4Runner Chevy Silverado 1500 2500 3500 Nissan GMC Subaru Buick Gas Lock Fuel Tank Caps Cover Replacement with Key 77300-47020 10504**Eponcia**$11.94**3.5★151 rev](https://www.amazon.com/dp/B0FQC8BX6N) [4**Locking Gas Cap Lock Fuel Cap Replace 5278655AA For 2000-2020 Dodge Jeep Chrysler - Ram 1500 2500 3500 Journey Caravan Charger Dakota Durango & Jeep Wrangler JK TJ Liberty & Chrysler 200 300 Sebring**ROVIKE**$12.54**4.2★1,123 rev](https://www.amazon.com/dp/B09V9QM6DC) [5**Locking Gas Cap Lock Fuel Cap Compatible With Chevy GMC Silverado Cruze Express Malibu Colorado Suburban Tahoe Equinox Terrain Sierra Savana Acadia Acura Buick Cadillac Lexus And More**SEEBOO**$10.09**4.0★1,028 rev](https://www.amazon.com/dp/B09SHTV6ZD)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**HAMOJUF Car Locking Gas Cap OEM# 12495845 Heavy Duty Vehicle Fuel Filler Door Locking Cover with Keys Automotive Replacement Accessories Compatible with Accord Avalon Venza**HAMOJUF**$8.71**13 rev3mo ago](https://www.amazon.com/dp/B0GSHLHKBR) [**FALVFUN Car Locking Gas Cap Heavy Duty Vehicle Lock Fuel Cap Cover Replace with Key Automotive OEM# 12495845 Replacement Accessories Compatible with Bonneville LeSabre Miata**FALVFUN**$8.66**47 rev9mo ago](https://www.amazon.com/dp/B0FVF7LM1Z) [**Eponcia Locking Gas Cap lock Locking Fuel Cap with Key for 4Runner Chevy Silverado 1500 2500 3500 Nissan GMC Subaru Buick Gas Lock Fuel Tank Caps Cover Replacement with Key 77300-47020 10504**Eponcia**$11.94**151 rev10mo ago](https://www.amazon.com/dp/B0FQC8BX6N) [**YYTQP Locking Gas Cap Fuel Tank with Key Lock Fuel Cap Cover Compatible with Dod-ge Ram Challenger Grand Caravan Ram 1500 Cherokee Wrangler TJ LJ JK JKU JL JLU JT # 05278655AB 5278655AB**YYTQP**$9.46**18 rev10mo ago](https://www.amazon.com/dp/B0FC7YTY21) [**HABNVUON Locking Gas Cap Locking Gas Cap lock Fuel Tank Cap with Key for 4Runner Chevy Silverado 1500 2500 3500 Nissan GMC Subaru Buick 77300-47020 10504**HABNVUON**$8.73**47 rev11mo ago](https://www.amazon.com/dp/B0FLPWLRXG)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**HAMOJUF Car Locking Gas Cap OEM# 12495845 Heavy Duty Vehicle Fuel Filler Door Locking Cover with Keys Automotive Replacement Accessories Compatible with Accord Avalon Venza**HAMOJUF**$8.71**2.6★**▲ 252%**](https://www.amazon.com/dp/B0GSHLHKBR) [**FALVFUN Car Locking Gas Cap Heavy Duty Vehicle Lock Fuel Cap Cover Replace with Key Automotive OEM# 12495845 Replacement Accessories Compatible with Bonneville LeSabre Miata**FALVFUN**$8.66**3.0★**▲ 93%**](https://www.amazon.com/dp/B0FVF7LM1Z) [**YYTQP Locking Gas Cap Fuel Tank with Key Lock Fuel Cap Cover Compatible with Dod-ge Ram Challenger Grand Caravan Ram 1500 Cherokee Wrangler TJ LJ JK JKU JL JLU JT # 05278655AB 5278655AB**YYTQP**$9.46**3.8★**▲ 90%**](https://www.amazon.com/dp/B0FC7YTY21) [**HABNVUON Locking Gas Cap Locking Gas Cap lock Fuel Tank Cap with Key for 4Runner Chevy Silverado 1500 2500 3500 Nissan GMC Subaru Buick 77300-47020 10504**HABNVUON**$8.73**3.0★**▲ 80%**](https://www.amazon.com/dp/B0FLPWLRXG) [**Locking Gas Cap Lock Fuel Cap Compatible With Chevy GMC Silverado Cruze Express Malibu Colorado Suburban Tahoe Equinox Terrain Sierra Savana Acadia Acura Buick Cadillac Lexus And More**SEEBOO**$10.09**4.0★**▲ 74%**](https://www.amazon.com/dp/B09SHTV6ZD)
**~~View all trending →~~**
## **What buyers say about locking gas cap**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**38%
*“Fit perfectly in the car”*
**Quality-Overall**16%
*“Excellent quality”*
**Efficiency**9%
*“Works, keeps the thieves out”*
**Value For Money**8%
*“Good product for the price”*
**Fuel Efficiency**6%
*“Protects your fuel investment”*
**Advertised Vs Actual Product**4%
*“Works as advertised”*
**Strength**3%
*“sturdy”*
**Ease Of Use**2%
*“Easy to use”*
**Durability**2%
*“Durable”*
**Assembly/Installation**1%
*“easy assembly”*
### **What buyers complain about **
**Size-Overall**29%
*“It's too big”*
**Compatibility-Overall**19%
*“it didnt work for my car”*
**Quality-Overall**7%
*“Absolute garbage”*
**Functionality-Overall**7%
*“It doesn't work right”*
**Leak-Proof**6%
*“It leaks”*
**Advertised Vs Actual Product**6%
*“False advertising”*
**Durability**5%
*“Broke easily”*
**Ease Of Use**3%
*“Can be difficult”*
**Value For Money**3%
*“Just dont even buy this its a waste of money”*
**Material Quality**2%
*“it seems it's made of poor quality plastic”*
### **Top return reasons **
**Size-Overall**61%
**Compatibility-Overall**20%
**Functionality-Overall**4%
**Mechanism Issues**3%
**Advertised Vs Actual Product**3%
**Defective Material/Parts**2%
**Assembly/Installation**1%
**Value For Money**1%
**Leak-Proof**1%
**Ease Of Use**1%
## **Common questions**
- **Is locking gas cap profitable to sell on Amazon United States?**
- The niche generates $114K/yr across 29 tracked products. 2 of 6 products launched in the last 360 days are still selling. 90-day search growth is +2.3%. Flapen's verdict: Skip it (48/100).
- **How competitive is the locking gas cap niche?**
- 22 brands and 56 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 58% of demand.
- **What do buyers complain about in locking gas cap?**
- Top complaints mined from reviews: Size-Overall, Compatibility-Overall, Quality-Overall. The return rate is 7.6% — above our launch gate.
- **When does demand for locking gas cap peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the locking gas cap niche?**
- Listings span $6.71–$25.94; the average listing price is $11.23 (sweet spot $15–$100). The average incumbent carries 647 reviews — the moat a new listing must climb.
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