gas can cap
Worth a lookShows no brand lock-in (top 5 brands take 48% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Brand share
Great48%top-5 brand share — no brand owns this niche
Conversion
Great7.2%search→purchase rate — share of searches ending in a sale
Competition
Good42%top-5 click share — leaders hold, buyers still browse
Review moat
Good755.76avg incumbent reviews — the moat a new listing must climb
Returns
Good2.2%return rate — above 6% kills the launch gate
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Growth
Good+34.1%90-day search growth — must beat 0% to launch
Price range
Okay$3.94–$24.30cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Okay$9.30avg listing price — sweet spot $15–$100
Market size
Okay$115K$115K/yr · 172K searches
Competition
The top 5 products take 42% of clicks — established leaders, but buyers still shop beyond them.Brands
25 falling
Sellers
27
Top-5 brand share
48%
Open market
46%
- Niwicka14%
- MEAJOO10%
- Zoolowua8%
- mapleza8%
- Mr. Yellow Cap8%
- BESOTDN7%
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 37 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Niwicka 5 Gallon Gas Can Cap Replacement Coarse Thread Gas Cap for Gasoline Portable Gas Tank Lid for 5+ Gallon Plastic and Metal Gas Cans Includes Spout Replacement Old Style(Pack of 4)
Niwicka$9.274.2★718 rev
Gas Can Spout Replacement Kit Gas Can Nozzle Replacement (2 Kit-White) All gaskets are installed and ready to use upon receipt. For 1/2/5/10 gallon gas can. Easy and convenient to use
Zoolowua$9.344.6★2,717 rev
MEAJOO 2PCS Universal Gas Can Caps 5 Gallon Replacement Lids with Coarse Thread for Gasoline Diesel & Fluids Leak-Proof HDPE Plastic Caps Fits 1/2.5/5/10+ Gallon Cans (1.73-1.82 Mouth Size)
MEAJOO$5.924.1★83 rev
6PCS Gas Can Caps 5 Gallon Gas Can Cap Replacement Universal Coarse Thread Gas Cap for Gasoline Portable Gas Tank Lid for Improved Sealing and Transportation
BESOTDN$7.934.2★265 rev
Upgraded Gas Can Spout Replacement 3-Pack Gas Can Nozzle Leak-Proof Design with Flexible 8.1-inch Long Spouts Easy Pour Fuel Can Vent Caps Drill Bit Fit for Most 1/2/5/10 Gal Plastic Gas Cans
Kilwani$8.914.2★437 rev
Newest
by launch date
4 PCS Universal Gas Can Cap Replacement - Coarse Thread Fuel Tank Lid Fits 1/2/5/10+ Gallon Gas Cans Compatible with Midwest Briggs & Stratton Scepter & Most Plastic/Metal Jerry Cans
Czteenz$7.4822 rev
YUPIKJI 6PCS Gas Can Caps 5 Gallon Gas Can Cover Replacement Lids for Gasoline Portable Coarse Thread Gas Cap Universal Refueling Fuel Tank Accessories for Improved Sealing and Transportation
YUPIKJI$5.864 rev
Glowentix 6 PCS Gas Can Caps Portable Gas Tank Lid for 5 Gallon Plastic and Metal Gas Cans Universal Coarse Thread Gas Cap for Gasoline Portable Gas Tank Lid for Improved Sealing
Glowentix$9.9742 rev
Glowentix 6 PCS 5 Gallon Gas Can Cap Replacement for Midwest Gas Can Fuel Can Caps Universal Coarse Thread Gas Cap for Gasoline Portable Gas Tank Lid for Improved Sealing and Transportation
Glowentix$10.0242 rev
Glowentix 15 PCS Gas Can Caps Portable Gas Tank Lid for 5 Gallon Plastic and Metal Gas Cans Universal Coarse Thread Gas Cap for Gasoline Portable Gas Tank Lid for Improved Sealing
Glowentix$14.9842 rev
Trending
90-day click momentum
Gas Can Cap Gas Can Cap Replacement (2 kits-Yellow) for popular brands such as Blitz Briggs Stratton Eagle Essence Gott Igloo Midwest Rubbermaid Scepter and GARAGE BOSS
Yamataka$7.394.6★
YUPIKJI 6PCS Gas Can Caps 5 Gallon Gas Can Cover Replacement Lids for Gasoline Portable Coarse Thread Gas Cap Universal Refueling Fuel Tank Accessories for Improved Sealing and Transportation
YUPIKJI$5.865.0★
Glowentix 6 PCS Gas Can Caps Portable Gas Tank Lid for 5 Gallon Plastic and Metal Gas Cans Universal Coarse Thread Gas Cap for Gasoline Portable Gas Tank Lid for Improved Sealing
Glowentix$9.974.5★
4PCS Universal Gas Can Cap Replacement-Heavy Duty HDPE Coarse Thread Lids with Seal Gasket Fits 1/2.5/3/5/10+ Gallon Plastic & Metal Fuel & Water Storage Cans (Midwest Compatible)
Ouchisw$7.304.4★
Surosha 6PCS Gas Can Caps 5 Gallon Gas Can Cap with Coarse Thread for Gasoline Portable Plastic Gas Tank Lid Replacement Universal Fuel Tank Accessories for Improved Sealing and Transportation
Surosha$6.784.2★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +34.1% search growth over the last 90 days.Peak months: Jun, Jul, Oct · busiest ÷ quietest = 2.2×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“fit as advertised”
“Good quality spout set”
“Doesnt leak”
“Great Value”
“As advertised”
“Works flawlessly”
“Straightforward”
“Perfect for saving space when storing fuel”
“I installed them”
“Easy, simple to use nozzle like the old days”
What buyers complain about
“Too big”
“They Leak”
“Poor quality control”
“Poor durability”
“Does not fit standard gas can”
“Problem is the plastic is brittle”
“Only partially worked”
“Difficult to achieve a seal”
“The picture are deceptive”
“Instructions are confusing”