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Radiator Flush

Maybe

Products sell for $21.11 on average, inside the sweet spot. But demand is soft, at -9.8% this quarter, so Radiator Flush is a Maybe.

Flapen Score
50
50 / 100
Top 44% of 7,287 Automotive niches · +1 vs the category median of 49
Market size
$287K/yr177K searches / yr
90-day growth
-9.8%search demand this quarter
Competition
70%top-5 click share · 12 brands · 73 sellers

Flapen Score

Radiator Flush against its category

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

50Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Radiator Flush market on Amazon at a glance

Shoppers on Amazon United States searched for Radiator Flush 177K times last year and spent an estimated $287K. The top 5 brands take 83% of clicks. Flapen scores it 50 out of 100, a Maybe.

01 · Demand

An estimated 7.7% of those searches ended in a purchase.

Shoppers searched for this 177K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 7.7% of those searches ended in a purchase. Searches in the last 90 days moved -9.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated $287K a year.

Searches, last 12 months
177K
Growth, 90 days vs prior 90
-9.8%
Conversion, latest week
7.7%
Market size, estimated
$287Ka year
Peak month
November1.3× the quietest month
Top search term
radiator flush83K searches a year

02 · Price

A sale here is worth $21.11.

Listings sell for $21.11 on average, from $5.82 to $92.76. Amazon reports units sold in ranges. This niche sold 10K to 13K a year. The average listing sells 500 to 750 of them. At $21.11 that is $11K to $16K a year per listing.

Average price
$21.11inside the $15 to $100 sweet spot
Price range
$5.82–$92.76
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
10K–13K
Units per listing a year
500–750
Revenue per listing a year
$11K–$16K
Returns
1.9%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is low.

69% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 2.7% of listings are out of stock. The average listing ranks #69 within Oils & Fluids. It carries 545 reviews at 4.49 stars, so a new listing needs social proof before a better product.

Sponsored listings
69%
Prime listings
100%
Out of stock, average day
2.7%
Average rank
#69in Oils & Fluids
Average rating
4.49 starsAmazon United States average 4.42 stars
Average reviews
545per listing
Listings tracked
16

04 · Newcomers

1 of last year's 3 launches cleared the first-year sales bar.

3 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 78 months on average, so the names here are established.

Launched, last 12 months
3
Successful launches
1Amazon's first-year sales bar
Average brand age
78 months

Products

Top Radiator Flush products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 70% of clicks. A locked shelf that new listings rarely crack.

Brands

12 rising

Sellers

73

Top-5 brand share

83%

Top 20: 100%

Top-5 click share

70%

Top 20: 100%

Open market

12%

  • Brand 136%
  • Brand 219%
  • Brand 319%
  • Brand 45%
  • Brand 55%
  • Brand 65%
  • Open — no brand owns it (6 brands, 12%)

Demand

Radiator Flush search demand

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

5K4KSpike '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Search terms

Top Radiator Flush search terms shoppers use

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

  • radiator flush83K/yr
  • coolant flush41K/yr
  • radiator flush and cleaner16K/yr
  • cooling system flush6K/yr
  • thermocure5K/yr
  • cooling system cleaner4K/yr
  • coolant cleaner4K/yr
  • coolant flush cleaner5K/yr
  • coolant system flush4K/yr
  • thermocure radiator flush4K/yr

Reviews and returns

What reviews say buyers love and hate about Radiator Flush

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

18%of positive reviews mention “Quality-Overall”
18%of negative reviews mention “Leak-Proof”
1.9%of orders come back
“not sure how much leaked out”
A buyer, on “Leak-Proof”18% 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.

19 topics

NegativePositive

FAQ

Common Radiator Flush questions

Answered from the same tracked data.