Head Gasket Sealer
FailThe top 5 products take 86% of clicks, so Head Gasket Sealer is a Fail.
- Flapen Score
- 48 / 100Ranks 415 of 811 Automotive niches · −1 vs the category median of 4948
- Market size
- £127K/yr52K searches / yr
- 90-day growth
- -15.7%search demand this quarter
- Competition
- 86%top-5 click share · 7 brands · 48 sellers
Flapen Score
Head Gasket Sealer against its category
The dotted line is the Automotive average. Past it, Head Gasket Sealer is stronger. Inside it, weaker.
Market
The Head Gasket Sealer market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Head Gasket Sealer 52K times last year and spent an estimated £127K. The top 5 brands take 94% of clicks. Demand peaks in Jan. Flapen scores it 48 out of 100, a Fail.
01 · Demand
An estimated 11.4% of those searches ended in a purchase.
Shoppers searched for this 52K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 11.4% of those searches ended in a purchase. Searches in the last 90 days moved -15.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated £127K a year.
- Searches, last 12 months
- 52K
- Growth, 90 days vs prior 90
- -15.7%
- Conversion, latest week
- 11.4%
- Market size, estimated
- £127Ka year
- Peak month
- January1.5× the quietest month
- Top search term
- steel seal17K searches a year
02 · Price
A sale here is worth £21.27.
Listings sell for £21.27 on average, from £6.23 to £32.47. Amazon reports units sold in ranges. This niche sold 4K to 5K a year. The average listing sells 500 to 750 of them. At £21.27 that is £11K to £16K a year per listing.
- Average price
- £21.27inside the $15 to $100 sweet spot
- Price range
- £6.23–£32.47
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 4K–5K
- Units per listing a year
- 500–750
- Revenue per listing a year
- £11K–£16K
- Returns
- 1.0%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is reviews.
33% of listings pay for placement with sponsored ads. 89% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #1,078 within Car & Motorbike Care. It carries 2,239 reviews at 3.98 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 33%
- Prime listings
- 89%
- Out of stock, average day
- 0.0%
- Average rank
- #1,078in Car & Motorbike Care
- Average rating
- 3.98 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 2,239per listing
- Listings tracked
- 9
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 65 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 65 months
Products
Top Head Gasket Sealer 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 17, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Steel Seal SSAMZ Head Gasket Repair Pour In Engine Head Gasket Sealer for Water Cooling Systems Works with All Blue Antifreeze Types Cars Vans 4x4s Trucks & Motorbikes
- Price
- £32.15
- Rating
- 3.9/5
- Reviews
- 1,110
- Age
- 5y ago

Nitrox Steel Weld Seal for Head Gaskets 500 ml
- Price
- £22.63
- Rating
- 3.7/5
- Reviews
- 148
- Age
- 5y ago

Bars H1S1L-27 Head Gasket Repair 600ml
- Price
- £14.83
- Rating
- 4.0/5
- Reviews
- 1,709
- Age
- 7y ago

The Award Winning Steel Seal
- Price
- £31.42
- Rating
- 4.1/5
- Reviews
- 530
- Age
- 11y ago

Holts Radweld Plus Coolant Leak Repair Total Coolant Leak Repair Industry Leading Car Radiator Leak Sealant Easy To Use Seal Engine Block Cylinder Head Hoses & More Suitable For All Cars 250ml
- Price
- £6.23
- Rating
- 4.5/5
- Reviews
- 2,572
- Age
- 15y ago
Trending
estimated 90-day click momentum
Holts Radweld Plus Coolant Leak Repair Total Coolant Leak Repair Industry Leading Car Radiator Leak Sealant Easy To Use Seal Engine Block Cylinder Head Hoses & More Suitable For All Cars 250ml
- Price
- £6.23
- Rating
- 4.5/5
- Reviews
- 2,572
- Age
- 15y ago

BLOWN HEAD GASKET? HYPER-SEAL A PERMANANT REPAIR SOLUTION!
- Price
- £17.46
- Rating
- 3.7/5
- Reviews
- 205
- Age
- 12y ago

Steel Seal SSAMZ Head Gasket Repair Pour In Engine Head Gasket Sealer for Water Cooling Systems Works with All Blue Antifreeze Types Cars Vans 4x4s Trucks & Motorbikes
- Price
- £32.15
- Rating
- 3.9/5
- Reviews
- 1,110
- Age
- 5y ago

The Award Winning Steel Seal
- Price
- £31.42
- Rating
- 4.1/5
- Reviews
- 530
- Age
- 11y ago

Bars H1S1L-27 Head Gasket Repair 600ml
- Price
- £14.83
- Rating
- 4.0/5
- Reviews
- 1,709
- Age
- 7y ago
Newest
by launch date
Nitrox Steel Weld Seal for Head Gaskets 500 ml
- Price
- £22.63
- Rating
- 3.7/5
- Reviews
- 148
- Age
- 5y ago

Steel Seal SSAMZ Head Gasket Repair Pour In Engine Head Gasket Sealer for Water Cooling Systems Works with All Blue Antifreeze Types Cars Vans 4x4s Trucks & Motorbikes
- Price
- £32.15
- Rating
- 3.9/5
- Reviews
- 1,110
- Age
- 5y ago

Bars H1S1L-27 Head Gasket Repair 600ml
- Price
- £14.83
- Rating
- 4.0/5
- Reviews
- 1,709
- Age
- 7y ago

HYPER-SEAL ULTRA SEALS AS STEEL - HEAVIEST HEAD GASKET LEAKS REPAIR
- Price
- £24.00
- Rating
- 3.9/5
- Reviews
- 106
- Age
- 10y ago

Steel Seal Blown Head Gasket Fix Repair Sealer for 4 Cylinder Engines
- Price
- £32.47
- Rating
- 3.6/5
- Reviews
- 353
- Age
- 11y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 86% of clicks. A locked shelf that new listings rarely crack.
Brands
7 rising
Sellers
48
Est. top-5 brand share
94%
Top 20: 100%
Est. top-5 click share
86%
Top 20: 100%
Open market
3%
- Steel Seal69%
- Nitrox8%
- Bars8%
- Holts4%
- K-Seal4%
- ENGINE REVIVE3%
- Open — no brand owns it (1 brand, 3%)
Demand
Head Gasket Sealer search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan · busiest ÷ quietest = 1.5×
Search terms
Top Head Gasket Sealer search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- steel seal17K/yr
- head gasket sealer16K/yr
- steel seal head gasket repair11K/yr
- head gasket sealant4K/yr
- head gasket repair5K/yr
Reviews and returns
What reviews say buyers love and hate about Head Gasket Sealer
We read the reviews and the return reasons for every product selling here.
“Did not do the job”
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.
17 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 Head Gasket Sealer 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









