---
title: "Gas Cap — $768K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/gas-cap"
last_updated: "2026-08-11T06:36:19.962Z"
locale: en
meta:
description: "Niche score 61/100 · $768K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 61/100 · $768K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Gas Cap — $768K/yr Amazon US Niche (2026) - Flapen"
---
# **gas cap**
**Worth a look**
Shows a fragmented shelf (top 5 take 24% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 71Growth 19Conversion 63Competition 91Returns 49Price range 73Avg price 43Brand share 70Review moat 53Quality gap 76
**Competition**
**Great****24%**
top-5 click share — an open shelf
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****$5.38–$40.50**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$768K**
$768K/yr · 1.2M searches
**Brand share**
**Good****63%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Good****5.6%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****1,378.32**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Okay****3.1%**
return rate — above 5% kills the launch gate
**Avg price**
**Okay****$11.19**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-11.3%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, gas cap is a $768K/yr Amazon United States market (1.2M searches/yr). The top 5 brands hold 63% of demand. Verdict: Worth a look — 61/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **gas cap market data**
- **Units sold / yr**
- **60K–80K**
- avg 750–1,000/product
- **Revenue / yr**
- **$671K–$895K**
- units × avg price
- **Conversion rate**
- **5.6%**
- **Avg BSR**
- **#469**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **79%**
- **Out of stock**
- **1.3%**
- **Avg brand age**
- **41 months**
- **Avg seller age**
- **161 days**
## **Competition & brand share**
Clicks spread well past the top 5 (24% combined) — an open shelf where new products get seen.
**Brands**
**36 **▼falling
**Sellers**
**111**
**Top-5 brand share**
**63%**
Top 20: 89%
**Top-5 click share**
**24%**
Top 20: 53%
**Open market**
**33%**
- ROVIKE28% - Manymiba21% - Gates7% - GM GENUINE PARTS4% - Anleecap4% - Eponcia3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -11.3% search growth over the last 90 days.
25K15K seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/automotive/gas-cap/trend)
## **Top gas cap search terms**
- **gas cap**611K/yr-17.0%4.4% conv. - **gas cap replacement**220K/yr-1.2%4.8% conv. - **fuel cap**108K/yr-10.4%3.2% conv. - **automotive replacement fuel tank caps**31K/yr+16.0%1.5% conv. - **fuel cap replacement**32K/yr+2.5%4.0% conv. - **fuel tank cap**35K/yr-12.1%1.7% conv. - **gas tank cap**30K/yr-5.5%2.2% conv. - **gas cap oem**37K/yr-43.4%3.7% conv. - **oem gas cap**24K/yr-2.4%2.7% conv. - **automotive replacement caps**11K/yr-14.9%1.1% conv. [**All search terms **](https://flapen.com/research/us/automotive/gas-cap/search-terms)
## **Top 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%3%$23K6%$46K9%$69K12%$92K101001K10K100K 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**Gas Cap Fuel Cap For 2000-2019 Dodge Ram 1500 2500 3500 Charger Challenger Durango Journey Nitro Grand Caravan Caliber Dakota & Chrysler 200 300 Town and Country Aspen Sebring Jeep Wrangler JK Liberty**ROVIKE**$11.16**4.4★12,057 rev](https://www.amazon.com/dp/B08CR8YZC3) [2**Gas Cap Fuel Cap For Kia soul sedona Forte Sportage Sorento Spectra Optima Amanti Cadenza Rio & Hyundai Sonata Elantra Santa Accent Tucson Azera Entourage Equus Genesis Genesis Coupe Veloster**ROVIKE**$11.46**4.4★12,057 rev](https://www.amazon.com/dp/B095Y6BK3H) [3**Gas Cap Fuel Cap For Honda Civic Accord Pilot CRV CR-V Odyssey Crosstour Fit Insight HRV HR-V Includ 2013 2014 2015 2016 2017 2018 2019 2020 2007 2008 2009 2010 2011 2012 17670-T3W-A01**ROVIKE**$12.42**4.4★12,057 rev](https://www.amazon.com/dp/B08ZCT4P9H) [4**Gates 31832 OE Equivalent Fuel Tank Cap**Gates**$9.41**4.4★3,890 rev](https://www.amazon.com/dp/B000C2SCR4) [5**Gas Cap Fuel Cap For 2003-2018 Jeep Wrangler JK TJ Liberty Patriot Cherokee Compass Commander Grand Cherokee Dodge Ram 1500 2500 Journey Dakota Dart Durango Caravan Chrysler 200 300 Town and Country**ROVIKE**$11.27**4.4★4,896 rev](https://www.amazon.com/dp/B08FSXXWZV)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**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) [**Eponcia Gas Cap Fuel Tank Cap OEM for Toyota Scion Tacoma Lexus ES350 GS350 GS460 LX470 4Runner Avalon Camry Corolla Highlander Matrix RAV4 77300-06040 Automotive Replacement Oil Fuel Caps**Eponcia**$10.02**63 rev10mo ago](https://www.amazon.com/dp/B0FQHC6RTB) [**Rebvugr Gas Cap Fuel Cap Replacement Automotive Replacement Fuel Tank Covers Car Accessories Fit for Dodge Ram 1500 2500 3500 Charger Challenger Replaces OEM#52030377AB 5278632AG 52030377AA**Rebvugr**$7.25**61 rev11mo ago](https://www.amazon.com/dp/B0FKM3VR4R) [**LivTee Gas Cap Fuel Cap Fits Toyota Camry 2002-2006 Tacoma 4Runner Highlander Sequoia Tundra Sienna Avalon Corolla Matrix Solara Fits Lexus ES330 2004-2006 ES300 RX330 Car Accessories 77300-33070**LivTee**$8.93**306 rev11mo ago](https://www.amazon.com/dp/B0FKBRDT79) [**SWQS Gas Cap Fuel Cap Replacement OEM 95995094 for Chevy Malibu Impala Equinox Colorado Trailblazer GMC Canyon Envoy Savana Buick LaCrosse Rendezvous Cadillac CTS STS DTS SRX XLR Pontiac**SWQS**$8.86**95 rev1y ago](https://www.amazon.com/dp/B0FF9QF4QB)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**LivTee Gas Cap Fuel Cap Fits Toyota Camry 2002-2006 Tacoma 4Runner Highlander Sequoia Tundra Sienna Avalon Corolla Matrix Solara Fits Lexus ES330 2004-2006 ES300 RX330 Car Accessories 77300-33070**LivTee**$8.93**4.4★**▲ 241%**](https://www.amazon.com/dp/B0FKBRDT79) [**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★**▲ 187%**](https://www.amazon.com/dp/B0FQC8BX6N) [**Gas Cap Fuel Cap for 2004-2020 Kia Soul Optima Sorento Spectra Forte Sportage Sedona Rio 2004-2020 Hyundai Elantra Sonata Santa Fe Tucson Azera Accent Ioniq Genesis 31010-3L600U**Manymiba**$9.51**4.2★**▲ 157%**](https://www.amazon.com/dp/B0CP96V8XT) [**Gas Cap Fuel Cap for 2000-2020 Ram 1500 2500 3500 Charger Challenger Dakota Dodge Grand Caravan Journey Durango Avenger Challenger 2003-2020 Wrangler JK TJ Compass Patriot 52030387AB**Manymiba**$9.12**4.6★**▲ 110%**](https://www.amazon.com/dp/B0CP8B2324) [**Gas Cap Fuel Cap for 2004-2011 Chevy Chevrolet Silverado 1500 2500 3500 Tahoe Suburban Avalanche GMC Sierra 1500 2500 3500 Yukon/Yukon XL Buick Enclave Cadillac Escalade Saturn Outlook GT330**Manymiba**$9.76**4.4★**▲ 107%**](https://www.amazon.com/dp/B0CP9B24CB)
**~~View all trending →~~**
## **What buyers say about gas cap**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**47%
*“Fit like a glove”*
**Quality-Overall**12%
*“Excellent Product”*
**Value For Money**8%
*“Great Value”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Efficiency**5%
*“Worked Out of the Box”*
**Fuel Efficiency**5%
*“Fuel capacity fits and functions well”*
**Assembly/Installation**5%
*“Less than 5 min install”*
**Leak-Proof**1%
*“works great with no air leaks”*
**Maintenance And Repair**1%
*“It was a good temporary fix”*
**Ease Of Use**1%
*“Simple to use”*
### **What buyers complain about **
**Size-Overall**22%
*“Didn't fit”*
**Compatibility-Overall**18%
*“Works but wouldnt fit the connector”*
**Durability**8%
*“Broke after the first use”*
**Functionality-Overall**8%
*“not functional”*
**Quality-Overall**7%
*“Cord is not great quality”*
**Leak-Proof**6%
*“Immediately leaked”*
**Advertised Vs Actual Product**3%
*“Incorrect description”*
**Value For Money**2%
*“$35 cheaper”*
**Touch/Button Controls**2%
*“this doesn't even do a single click”*
**Ease Of Use**2%
*“Not easy to open”*
### **Top return reasons **
**Size-Overall**56%
**Compatibility-Overall**17%
**Functionality-Overall**8%
**Defective Material/Parts**4%
**Advertised Vs Actual Product**4%
**Leak-Proof**2%
**Value For Money**2%
**Mechanism Issues**1%
**Assembly/Installation**1%
**Product Condition**1%
## **Common questions**
- **Is gas cap profitable to sell on Amazon United States?**
- The niche generates $768K/yr across 77 tracked products. 5 of 11 products launched in the last 360 days are still selling. 90-day search growth is -11.3%. Flapen's verdict: Worth a look (61/100).
- **How competitive is the gas cap niche?**
- 36 brands and 111 sellers compete. The top 5 products take 24% of clicks and top 5 brands hold 63% of demand.
- **What do buyers complain about in gas cap?**
- Top complaints mined from reviews: Size-Overall, Compatibility-Overall, Durability. The return rate is 3.1%.
- **When does demand for gas cap peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the gas cap niche?**
- Listings span $5.38–$40.50; the average listing price is $11.19 (sweet spot $15–$100). The average incumbent carries 1,378 reviews — the moat a new listing must climb.
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