Seafoam Marine
FailThe top 5 brands take 100% of clicks, so Seafoam Marine is a Fail.
- Flapen Score
- 48 / 100Ranks 3,828 of 7,287 Automotive niches · −1 vs the category median of 4948
- Market size
- $95K/yr33K searches / yr
- 90-day growth
- +176.8%search demand this quarter
- Competition
- 91%top-5 click share · 4 brands · 86 sellers
Flapen Score
Seafoam Marine against its category
The dotted line is the Automotive average. Past it, Seafoam Marine is stronger. Inside it, weaker.
Market
The Seafoam Marine market on Amazon at a glance
Shoppers on Amazon United States searched for Seafoam Marine 33K times last year and spent an estimated $95K. All 4 brands take every click. Flapen scores it 48 out of 100, a Fail.
01 · Demand
An estimated 7.5% of those searches ended in a purchase.
Shoppers searched for this 33K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 7.5% of those searches ended in a purchase. Searches in the last 90 days moved +176.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated $95K a year.
- Searches, last 12 months
- 33K
- Growth, 90 days vs prior 90
- +176.8%
- Conversion, latest week
- 7.5%
- Market size, estimated
- $95Ka year
- Top search term
- sea foam marine pro8K searches a year
02 · Price
A sale here is worth $38.64.
Listings sell for $38.64 on average, from $11.14 to $136.38. Amazon reports units sold in ranges. This niche sold 3K to 4K a year. The average listing sells 250 to 500 of them. At $38.64 that is $10K to $19K a year per listing.
- Average price
- $38.64inside the $15 to $100 sweet spot
- Price range
- $11.14–$136.38
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 3K–4K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $10K–$19K
- Returns
- 0.2%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
63% of listings pay for placement with sponsored ads. 25% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #63 within Oils & Fluids. It carries 2,371 reviews at 4.83 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 63%
- Prime listings
- 25%
- Out of stock, average day
- 0.0%
- Average rank
- #63in Oils & Fluids
- Average rating
- 4.83 starsAmazon United States average 4.42 stars
- Average reviews
- 2,371per listing
- Listings tracked
- 8
04 · Newcomers
2 of last year's 3 launches cleared the first-year sales bar.
3 products launched here in the last 12 months. 2 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 74 months on average, so the names here are established.
- Launched, last 12 months
- 3
- Successful launches
- 2Amazon's first-year sales bar
- Average brand age
- 74 months
Products
Top Seafoam Marine products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 9, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Sea Foam Marine PRO Marine Fuel System Treatment MP20 20 oz Pack of 3
- Price
- $39.33
- Rating
- 4.8/5
- Reviews
- 1,003
- Age
- 11mo ago

STA-BIL 360 Marine Fuel System Treatment 32 oz
- Price
- $22.25
- Rating
- 4.8/5
- Reviews
- 8,043
- Age
- 18y ago

KITLEY Marine PRO Marine Fuel System Treatment MP20
- Price
- $21.04
- Rating
- 5.0/5
- Reviews
- 3
- Age
- 7mo ago

STA-BIL Marine Tune-Up Fuel Treatment Cleans Carburetors and Injectors Fixes Rough Running Engines Eliminates Water Treats up to 20 Gallons 8 oz. (22313) Blue 8oz
- Price
- $11.14
- Rating
- 4.7/5
- Reviews
- 490
- Age
- 4y ago

Sea Foam Marine PRO Marine Fuel System Treatment MP20 20 oz Pack of 1
- Price
- $14.53
- Rating
- 4.8/5
- Reviews
- 1,003
- Age
- 6y ago
Trending
estimated 90-day click momentum
KITLEY Marine PRO Marine Fuel System Treatment MP20
- Price
- $21.04
- Rating
- 5.0/5
- Reviews
- 3
- Age
- 7mo ago

Marine Fuel System Treatment 2 Bottles (40 oz / 1.18 L Total) | Fuel Stabilizer & Cleaner for Boats Outboards & PWCs | Helps Restore Power & Improve Efficiency
- Price
- $34.36
- Rating
- 5.0/5
- Reviews
- 3
- Age
- 9mo ago

STA-BIL 360 Marine Fuel System Treatment 32 oz
- Price
- $22.25
- Rating
- 4.8/5
- Reviews
- 8,043
- Age
- 18y ago

Sea Foam Marine PRO Marine Fuel System Treatment MP20 20 oz Pack of 3
- Price
- $39.33
- Rating
- 4.8/5
- Reviews
- 1,003
- Age
- 11mo ago

STA-BIL Marine Tune-Up Fuel Treatment Cleans Carburetors and Injectors Fixes Rough Running Engines Eliminates Water Treats up to 20 Gallons 8 oz. (22313) Blue 8oz
- Price
- $11.14
- Rating
- 4.7/5
- Reviews
- 490
- Age
- 4y ago
Newest
by launch date
KITLEY Marine PRO Marine Fuel System Treatment MP20
- Price
- $21.04
- Rating
- 5.0/5
- Reviews
- 3
- Age
- 7mo ago

Marine Fuel System Treatment 2 Bottles (40 oz / 1.18 L Total) | Fuel Stabilizer & Cleaner for Boats Outboards & PWCs | Helps Restore Power & Improve Efficiency
- Price
- $34.36
- Rating
- 5.0/5
- Reviews
- 3
- Age
- 9mo ago

Sea Foam Marine PRO Marine Fuel System Treatment MP20 20 oz Pack of 3
- Price
- $39.33
- Rating
- 4.8/5
- Reviews
- 1,003
- Age
- 11mo ago

STA-BIL Marine Tune-Up Fuel Treatment Cleans Carburetors and Injectors Fixes Rough Running Engines Eliminates Water Treats up to 20 Gallons 8 oz. (22313) Blue 8oz
- Price
- $11.14
- Rating
- 4.7/5
- Reviews
- 490
- Age
- 4y ago

MP20 20OZ Seafoam Marine Pro - Quantity 12
- Price
- $136.38
- Rating
- 4.7/5
- Reviews
- 51
- Age
- 5y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 91% of clicks. A locked shelf that new listings rarely crack.
Brands
4 rising
Sellers
86
Est. top-5 brand share
100%
Top 20: 100%
Est. top-5 click share
91%
Top 20: 100%
Open market
0%
- Sea Foam46%
- STA-BIL39%
- KITLEY12%
- Generic3%
- Open — no brand owns it (0%)
Demand
Seafoam Marine search demand
Weekly searches over the year. Pick a range.
Search terms
Top Seafoam Marine search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- sea foam marine pro8K/yr
- seafoam marine pro5K/yr
- seafoam marine7K/yr
- seafoam marine pro fuel treatment6K/yr
- sea foam marine3K/yr
- marine seafoam3K/yr
Reviews and returns
What reviews say buyers love and hate about Seafoam Marine
We read the reviews and the return reasons for every product selling here.
“Failed to clean out gas in my carburetor”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
14 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Seafoam Marine questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









