Seastar Hc5345 Seal Kit
FailThe top 5 products take 90% of clicks, so Seastar Hc5345 Seal Kit is a Fail.
- Flapen Score
- 48 / 100Ranks 3,828 of 7,287 Automotive niches · −1 vs the category median of 4948
- Market size
- $274K/yr61K searches / yr
- 90-day growth
- -18.4%search demand this quarter
- Competition
- 90%top-5 click share · 7 brands · 44 sellers
Flapen Score
Seastar Hc5345 Seal Kit against its category
The dotted line is the Automotive average. Past it, Seastar Hc5345 Seal Kit is stronger. Inside it, weaker.
Market
The Seastar Hc5345 Seal Kit market on Amazon at a glance
Shoppers on Amazon United States searched for Seastar Hc5345 Seal Kit 61K times last year and spent an estimated $274K. The top 5 brands take 94% of clicks. Demand peaks in Mar–Apr–Jul. Flapen scores it 48 out of 100, a Fail.
01 · Demand
An estimated 7.6% of those searches ended in a purchase.
Shoppers searched for this 61K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 7.6% of those searches ended in a purchase. Searches in the last 90 days moved -18.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $274K a year.
- Searches, last 12 months
- 61K
- Growth, 90 days vs prior 90
- -18.4%
- Conversion, latest week
- 7.6%
- Market size, estimated
- $274Ka year
- Peak month
- March2.4× the quietest month
- Top search term
- seastar hydraulic steering seal kit26K searches a year
02 · Price
A sale here is worth $59.15.
Listings sell for $59.15 on average, from $10.86 to $162.60. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 500 to 750 of them. At $59.15 that is $30K to $44K a year per listing.
- Average price
- $59.15inside the $15 to $100 sweet spot
- Price range
- $10.86–$162.60
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 5K–6K
- Units per listing a year
- 500–750
- Revenue per listing a year
- $30K–$44K
- Returns
- 2.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
75% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 10.3% of listings are out of stock. The average listing ranks #519 within Fluids & Maintenance. It carries 240 reviews at 4.18 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 75%
- Prime listings
- 100%
- Out of stock, average day
- 10.3%
- Average rank
- #519in Fluids & Maintenance
- Average rating
- 4.18 starsAmazon United States average 4.42 stars
- Average reviews
- 240per listing
- Listings tracked
- 8
04 · Newcomers
Brands here are young.
The brands on the shelf have sold for 31 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 31 months
Products
Top Seastar Hc5345 Seal Kit 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
HC5345 Seal Kit For SeaStar Hydraulic Steering Cylinder Seal Kit with Pin Wrench HS5157 compatible with HC5340 HC5341 HC5342 HC5343 HC5344 HC5345 HC6750 HC6751
- Price
- $19.54
- Rating
- 4.4/5
- Reviews
- 625
- Age
- 5y ago

HC5345 Seal Kit Fit for Seastar Front Mount Hydraulic Steering Cylinder Seal Kit #HS5157 & Steering Support Bracket Puller for SeaStar HC5345 HC5348 HC5358 & More
- Price
- $46.75
- Rating
- 4.0/5
- Reviews
- 221
- Age
- 5y ago

Dometic SeaStar Seal Kit HS5157 with Wrench
- Price
- $162.60
- Rating
- 4.6/5
- Reviews
- 796
- Age
- 24y ago

Bonbo for Seastar HC5345 Front Mount Hydraulic Steering Cylinder Seals Kit with Pin Wrench HS5157 & for All Seastar Steering Support Bracket Puller
- Price
- $46.68
- Rating
- 4.1/5
- Reviews
- 85
- Age
- 6y ago

Dometic SeaStar Seal Kit HS5167 without Wrench
- Price
- $125.73
- Rating
- 4.3/5
- Reviews
- 120
- Age
- 21y ago
Trending
estimated 90-day click momentum
NBPLUS Helm Seal Kit Hydraulic Helm Seal Service Kit Compatible with Seastar HH5271 HH5272 HH5273 HH5261 HH5262 HP6032 Baystar HH4514 HH4314 HH4513 for Marine Steering Systems
- Price
- $10.86
- Rating
- 4.6/5
- Reviews
- 33
- Age
- 2y ago

Bonbo for Seastar HC5345 Front Mount Hydraulic Steering Cylinder Seals Kit with Pin Wrench HS5157 & for All Seastar Steering Support Bracket Puller
- Price
- $46.68
- Rating
- 4.1/5
- Reviews
- 85
- Age
- 6y ago

SsllZdq HC5345 Seal kit for Seastar Front Mount Hydraulic Steering Cylinder with pin Wrench HS5157 and for All Seastar Steering Support Bracket pullers
- Price
- $39.95
- Rating
- 3.3/5
- Reviews
- 11
- Age
- 1y ago

Dometic SeaStar Seal Kit HS5157 with Wrench
- Price
- $162.60
- Rating
- 4.6/5
- Reviews
- 796
- Age
- 24y ago

HC5345 Seal Kit For SeaStar Hydraulic Steering Cylinder Seal Kit with Pin Wrench HS5157 compatible with HC5340 HC5341 HC5342 HC5343 HC5344 HC5345 HC6750 HC6751
- Price
- $19.54
- Rating
- 4.4/5
- Reviews
- 625
- Age
- 5y ago
Newest
by launch date
HC5345 Seal Kit for SeaStar Hydraulic Steering Cylinder Seal Kit with Pin Wrench HS5157 Seastar Seal Kit compatible with HC5340 HC5341 HC5342 HC5343 HC5344 HC5346 HC6750 HC6751 HC6754 HC6755
- Price
- $21.06
- Rating
- 4.1/5
- Reviews
- 27
- Age
- 1y ago

SsllZdq HC5345 Seal kit for Seastar Front Mount Hydraulic Steering Cylinder with pin Wrench HS5157 and for All Seastar Steering Support Bracket pullers
- Price
- $39.95
- Rating
- 3.3/5
- Reviews
- 11
- Age
- 1y ago

NBPLUS Helm Seal Kit Hydraulic Helm Seal Service Kit Compatible with Seastar HH5271 HH5272 HH5273 HH5261 HH5262 HP6032 Baystar HH4514 HH4314 HH4513 for Marine Steering Systems
- Price
- $10.86
- Rating
- 4.6/5
- Reviews
- 33
- Age
- 2y ago

HC5345 Seal Kit For SeaStar Hydraulic Steering Cylinder Seal Kit with Pin Wrench HS5157 compatible with HC5340 HC5341 HC5342 HC5343 HC5344 HC5345 HC6750 HC6751
- Price
- $19.54
- Rating
- 4.4/5
- Reviews
- 625
- Age
- 5y ago

HC5345 Seal Kit Fit for Seastar Front Mount Hydraulic Steering Cylinder Seal Kit #HS5157 & Steering Support Bracket Puller for SeaStar HC5345 HC5348 HC5358 & More
- Price
- $46.75
- Rating
- 4.0/5
- Reviews
- 221
- Age
- 5y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 90% of clicks. A locked shelf that new listings rarely crack.
Brands
7 flat
Sellers
44
Est. top-5 brand share
94%
Top 20: 100%
Est. top-5 click share
90%
Top 20: 100%
Open market
3%
- Danti50%
- SeaStar19%
- Yoursme13%
- Bonbo8%
- KOHUIPU4%
- NBPLUS3%
- Open — no brand owns it (1 brand, 3%)
Demand
Seastar Hc5345 Seal Kit search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Mar, Apr, Jul · busiest ÷ quietest = 2.4×
Search terms
Top Seastar Hc5345 Seal Kit search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- seastar hydraulic steering seal kit26K/yr
- sea star hydraulic steering seal kit13K/yr
- seastar seal kit7K/yr
- seastar hc5345 seal kit5K/yr
- seastar hc5345-3 seal kit oem3K/yr
- hc5345 seal kit3K/yr
- seastar hc5345 seal kit oem3K/yr
Reviews and returns
What reviews say buyers love and hate about Seastar Hc5345 Seal Kit
We read the reviews and the return reasons for every product selling here.
“Leaked terribly”
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.
16 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 Seastar Hc5345 Seal Kit 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









