s3213 fuel water separator filter
Worth a lookShows demand growing +124.8% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+124.8%90-day search growth — must beat 0% to launch
Review moat
Great103.9avg incumbent reviews — the moat a new listing must climb
Avg price
Incredible$26.31avg listing price — sweet spot $15–$100
Price range
Great$10.60–$70.53cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.4%return rate — above 6% kills the launch gate
Conversion
Great7.6%search→purchase rate — share of searches ending in a sale
Brand share
Good71%top-5 brand share — brands hold most of the demand
Competition
Okay60%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$43K$43K/yr · 21K searches
Competition
The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.Brands
15 falling
Sellers
38
Top-5 brand share
71%
Open market
23%
- ATRACYPART24%
- AULDAY16%
- Vkinman13%
- TRSCJXN10%
- DZFST.FI9%
- SEGULER5%
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 20 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
S3213 Fuel Filter Marine Water Separator with Clear Bowl AssemblyReplacement For Marine Outboard Motor Mercury Replaces# 35-60494-1 18-7932-1 18-17928 35-809097
ATRACYPART$20.134.6★168 rev
Vkinman S3213 Fuel Filter Marine Fuel Water Separator Replacement for Marine Outboard Motor Compatible with Mercury Replaces 35-60494-1 B32013 18-7932-1 (2Pcs)
Vkinman$22.284.3★38 rev
DZFST.FI S3213 Fuel Water Separator Filter Compatible with Marine Outboard Motor Mercury Yamaha Racor Sierra Engine Boat 10 Micron Replaces# 35-60494-1 S3213 18-7932-1 18-17928 35-809097
DZFST.FI$19.204.5★108 rev
S3213 Fuel Water Separator Marine Kit Compatible with Yamaha and for Mercury Marine Outboard Motor with 3/8 Barb x 1/4 NPT Brass Fittings Replaces B32013 35-60494-1 18-7932-1 18-17928 35-809097
TRSCJXN$24.324.6★51 rev
S3213 Fuel Filter Marine Fuel Water Separator With Clear Bowl Replacement for Marine Outboard Motor Replaces# 35-60494-1 S3213 18-7932-1 18-17928 35-809097
AULDAY$18.924.5★225 rev
Newest
by launch date
S3213 Marine Fuel Water Separator Filter Assembly with Clear Bowl 3/8 Inch NPT Port Compatible with Yamaha and for Mercury Outboard Motors Replaces 35-60494-1 18-7932-1 18-17928 35-809097
TRSCJXN$17.321 rev
S3213 Fuel Water Separator Filter with Clear Bowl: 10 Micron Marine Fuel Filter Compatible with Yamaha/Mercury/Suzuki/Racor. Replaces 35-60494-1 18-7932-1. Installation Kit Screws Fittings & Clamps
SURGLA$26.0525 rev
S3213 Fuel Water Separator Marine Kit Compatible with Yamaha and for Mercury Marine Outboard Motor with 3/8 Barb x 1/4 NPT Brass Fittings Replaces B32013 35-60494-1 18-7932-1 18-17928 35-809097
TRSCJXN$24.3251 rev
2PCS S3213 Fuel Filter Marine Fuel Water Separator Replacement for Marine Outboard Motor Replaces# 35-60494-1 S3213 18-7932-1 18-17928 35-809097
AULDAY$22.0311 rev
2PCS S3213 Fuel Filter Marine Fuel Water Separator With Clear Bowl Replacement for Marine Outboard Motor Replaces# 35-60494-1 S3213 18-7932-1 18-17928 35-809097
AULDAY$36.9715 rev
Trending
90-day click momentumS3213 Marine Fuel Water Separator Filter Assembly with Clear Bowl 3/8 Inch NPT Port Compatible with Yamaha and for Mercury Outboard Motors Replaces 35-60494-1 18-7932-1 18-17928 35-809097
TRSCJXN$17.325.0★
S3213 Fuel Water Separator Filter with Clear Bowl: 10 Micron Marine Fuel Filter Compatible with Yamaha/Mercury/Suzuki/Racor. Replaces 35-60494-1 18-7932-1. Installation Kit Screws Fittings & Clamps
SURGLA$26.054.3★
CADUFUELLY S3213 Fuel Filter Marine Oil-water Separator Oil-water Separator for Mercury Replaces 35-60494-1 S3213 18-7932-1 18-17928 35-809097 (Fuel Filter Water Separator)
CADUFUELLY$10.605.0★
S3213 18-7932-1 Fuel Filter Marine Water Separator with Clear Bowl Assembly Compatible with Marine Outboard Motor Replaces 35-60494-1 18-17928 35-809097
ZELYVER$17.275.0★
2PCS S3213 Fuel Filter Marine Fuel Water Separator Replacement for Marine Outboard Motor Replaces# 35-60494-1 S3213 18-7932-1 18-17928 35-809097
AULDAY$22.034.4★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +124.8% search growth over the last 90 days.Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 3.9×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“The build quality feels solid and well-made, and installation was simple and straightforward”
“Great value for price”
“As Advertised”
“Good filter system”
“My son was excited to help watch the installation”
“does not leak”
“Good fit”
“easy solution”
“the product was easy to modify to fit my fuel system”
“Cost effective preventative maintenance”
What buyers complain about
“Fuel leaking”
“Filter was not the correct one”
“were kind of cheap”
“havent installed it”
“Metal shavings”
“The plastic piece on the bottom would not screw on tightly”
“My boat has a chronic issue with water getting into the fuel”
“within 5 minutes the same issue”
“The rubber O-rings dont work”
“Cross reference numbers are incorrect”