s3227 fuel water separator
Worth a lookShows a thin review moat (76 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Review moat
Incredible76.38avg incumbent reviews — the moat a new listing must climb
Avg price
Incredible$35.14avg listing price — sweet spot $15–$100
Returns
Great1.4%return rate — above 5% kills the launch gate
Conversion
Great9.9%search→purchase rate — share of searches ending in a sale
Price range
Great$13.50–$117.20cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Great+66.9%90-day search growth — must beat 0% to launch
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Brand share
Okay87%top-5 brand share — brands hold most of the demand
Competition
Okay68%top-5 click share — leaders hold, buyers still browse
Market size
Bad$26K$26K/yr · 8K searches
According to Flapen's Amazon United States niche tracking, s3227 fuel water separator is a $26K/yr Amazon United States market (8K searches/yr). The top 5 brands hold 87% of demand. Verdict: Worth a look — 56/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
s3227 fuel water separator market data
- Units sold / yr
- 1K–2K
- avg 0–100/product
- Revenue / yr
- $44K–$53K
- units × avg price
- Conversion rate
- 9.9%
- Avg BSR
- #679
- Page quality
- 0%
- Prime
- 77%
- Sponsored
- 69%
- Out of stock
- 5.1%
- Avg brand age
- 51 months
- Avg seller age
- 205 days
Competition & brand share
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.Brands
8 falling
Sellers
38
Top-5 brand share
87%
Top 20: 100%
Top-5 click share
68%
Top 20: 100%
Open market
8%
- ATRACYPART42%
- Racor22%
- ZELYVER10%
- SEGULER7%
- CARMOCAR6%
- SURGLA5%
- Open — no brand owns it (2 brands, 8%)
Top s3227 fuel water separator 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.
All 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
S3227 Fuel Filter Water Separator with Clear Bowl AssemblyReplacement For Marine Outboard Motor Replaces# 9-37882 18-7922
ATRACYPART$21.994.6★239 rev
Racor Gasoline Filter Replacement Element for 320R-Rac03
Racor$35.534.7★409 rev
S3227 Fuel Filter Marine Fuel Water Separator With Clear Bowl Replacement for Marine Outboard Motor Replace# S3227 320R 490R-RAC-01 18-7948 9-37882 18-7922 18-7922-1
SEGULER$17.204.4★31 rev
Racor S3227 Replacement Element Assembly 10 Micron
Racor$39.904.4★11 rev
S3227 18-7922 Fuel Filter Marine Water Separator with Clear Bowl Assembly Compatible with Marine Outboard Motor Replaces 9-37882 320R 490R-RAC-01 18-7922 18-7922-1
ZELYVER$19.934.5★15 rev
Newest
by launch date
S3227 Fuel Filter Water Separator Assembly for Mercury Marine Outboards Replaces 320R 490R-RAC-01 18-7948 9-37882 18-7922 18-7922-1 - Includes Screws Fittings & Clamps
SURGLA$26.0825 rev
2PCS S3227 Fuel Water Separator Filter with Clear Bowl AssemblyCompatible with Marine Outboard Motor Mercury 10 MicronReplaces# 9-37882 18-7922 490R-RAC-01 18-7922 18-7922-1 S3228TUL
Koreyoshi$36.554 rev
AUIVERED S3227 Filter Element - 10 Micron Marine Boat Filter for Mercury Yamaha Outboard Motor - Replaces 320R-RAC-01 490R-RAC-01 18-7948 9-37882 18-7922 18-7922-1
AUIVERED$13.505 rev
S3227 18-7922 Fuel Filter Marine Water Separator with Clear Bowl Assembly Compatible with Marine Outboard Motor Replaces 9-37882 320R 490R-RAC-01 18-7922 18-7922-1
ZELYVER$19.9315 rev
S3227 18-7922 Fuel Filter Marine Water Separator Compatible with Marine Outboard Motor Replaces 9-37882 320R 490R-RAC-01 18-7922 18-7922-1
ZELYVER$14.893 rev
Trending
90-day click momentumS3227 Fuel Filter Water Separator Assembly for Mercury Marine Outboards Replaces 320R 490R-RAC-01 18-7948 9-37882 18-7922 18-7922-1 - Includes Screws Fittings & Clamps
SURGLA$26.084.3★
S3227 18-7922 Fuel Filter Marine Water Separator Compatible with Marine Outboard Motor Replaces 9-37882 320R 490R-RAC-01 18-7922 18-7922-1
ZELYVER$14.893.4★
Racor Filter Replacement Element S3227 for 320R and 490R-RAC-01 (w k)
Racor$69.235.0★
Racor S3227 Replacement Element Assembly 10 Micron
Racor$39.904.4★
Fuel Filter Element Water SeparatorReplacement For Marine Outboard Motor Mercury Replaces# S3227 320R 490R-RAC-01 18-7948 9-37882 18-7922 18-7922-1
ATRACYPART$14.874.3★
What buyers say about s3227 fuel water separator
What buyers praise and complain about, mined from review topics.What buyers love
“Does the job”
“As good as name brand”
“Fits perfect”
“Far cheaper than name brand Racor filter housings”
“Easy to install”
“it is well built”
“Overall I feel the base as the mounting assembly/fixture was high quality”
“Works great”
“So far it filters effectively”
“shouldnt be a problem for your average watercraft”
What buyers complain about
“Cheaply made”
“Pretty hefty in size so mounting this may not be easy for some boats”
“Drain Valve Leaks”
“last one corroded so badly that it started leaking fuel”
“There are no directional arrows”
“then the filter was put on so tight during manufacturing that I ended up denting it trying to remove it rendering it useless”
“However, the bowl drain can be a bit tricky to open fully without tools”
“The other issue is only a problem during initial installation”
Top return reasons
Common questions
- Is s3227 fuel water separator profitable to sell on Amazon United States?
- The niche generates $26K/yr across 13 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +66.9%. Flapen's verdict: Worth a look (56/100).
- How competitive is the s3227 fuel water separator niche?
- 8 brands and 38 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 87% of demand.
- What do buyers complain about in s3227 fuel water separator?
- Top complaints mined from reviews: Quality-Overall, Mounting, Leak-Proof. The return rate is 1.4%.
- What does it cost to enter the s3227 fuel water separator niche?
- Listings span $13.50–$117.20; the average listing price is $35.14 (sweet spot $15–$100). The average incumbent carries 76 reviews — the moat a new listing must climb.