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Radweld

Fail

The top 5 products take 85% of clicks, so Radweld is a Fail.

Flapen Score
44
44 / 100
Ranks 542 of 811 Automotive niches · −5 vs the category median of 49
Market size
£141K/yr93K searches / yr
90-day growth
-5.3%search demand this quarter
Competition
85%top-5 click share · 7 brands · 66 sellers

Flapen Score

Radweld against its category

The dotted line is the Automotive average. Past it, Radweld is stronger. Inside it, weaker.

44Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Radweld market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Radweld 93K times last year and spent an estimated £141K. The top 5 brands take 94% of clicks. Flapen scores it 44 out of 100, a Fail.

01 · Demand

An estimated 14.7% of those searches ended in a purchase.

Shoppers searched for this 93K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 14.7% of those searches ended in a purchase. Searches in the last 90 days moved -5.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated £141K a year.

Searches, last 12 months
93K
Growth, 90 days vs prior 90
-5.3%
Conversion, latest week
14.7%
Market size, estimated
£141Ka year
Peak month
March1.8× the quietest month
Top search term
k seal16K searches a year

02 · Price

A sale here is worth £10.28.

Listings sell for £10.28 on average, from £3.40 to £26.87. Amazon reports units sold in ranges. This niche sold 15K to 20K a year. The average listing sells 1,000 to 1,250 of them. At £10.28 that is £10K to £13K a year per listing.

Average price
£10.28under the $15 to $100 sweet spot
Price range
£3.40–£26.87
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
15K–20K
Units per listing a year
1,000–1,250
Revenue per listing a year
£10K–£13K
Returns
0.6%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

40% of listings pay for placement with sponsored ads. 60% ship with Prime. On an average day, 3.0% of listings are out of stock. The average listing ranks #86 within Car & Motorbike Care. It carries 2,372 reviews at 4.33 stars, so a new listing needs social proof before a better product.

Sponsored listings
40%
Prime listings
60%
Out of stock, average day
3.0%
Average rank
#86in Car & Motorbike Care
Average rating
4.33 starsAmazon United Kingdom average 4.36 stars
Average reviews
2,372per listing
Listings tracked
10

04 · Newcomers

Brands here are established.

The brands on the shelf have sold for 63 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
63 months

Products

Top Radweld 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.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 85% of clicks. A locked shelf that new listings rarely crack.

£0£14K£28K£42K£56K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

7 flat

Sellers

66

Est. top-5 brand share

94%

Top 20: 100%

Est. top-5 click share

85%

Top 20: 100%

Open market

3%

  • Holts53%
  • K-Seal29%
  • ‎Best Price Square5%
  • Liqui Moly4%
  • ERRECOM3%
  • Generic3%
  • Open — no brand owns it (1 brand, 3%)

Demand

Radweld search demand

Weekly searches over the year, seasonality beneath. Pick a range.

2K2KPrime Day '25Spike '25Black Friday '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.8×

Search terms

Top Radweld search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • k seal16K/yr
  • radweld13K/yr
  • coolant leak repair11K/yr
  • k seal coolant leak repair13K/yr
  • radweld coolant leak repair9K/yr
  • car radiator leak sealant7K/yr
  • rad weld stop leak5K/yr
  • kseal coolant leak repair3K/yr
  • rad weld3K/yr
  • radiator stop leak3K/yr

Reviews and returns

What reviews say buyers love and hate about Radweld

We read the reviews and the return reasons for every product selling here.

23%of positive reviews mention “Leak-Proof”
29%of negative reviews mention “Leak-Proof”
0.6%of orders come back
“got a leak”
A buyer, on “Leak-Proof”29% of negative reviews mention the same topic

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

NegativePositive

FAQ

Common Radweld 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