coolant test strips
Worth a lookShows a sweet-spot price point ($29.81 avg), but a concentrated shelf (top 5 take 78% of clicks) keeps it on the watch list.
Avg price
Incredible$29.81avg listing price — sweet spot $15–$100
Returns
Great1.3%return rate — above 6% kills the launch gate
Price range
Great$6.03–$77.60cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great8.3%search→purchase rate — share of searches ending in a sale
Review moat
Good531.7avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Market size
Okay$240K$240K/yr · 97K searches
Growth
Okay+14.6%90-day search growth — must beat 0% to launch
Brand share
Okay88%top-5 brand share — brands hold most of the demand
Competition
Bad78%top-5 click share — a locked-up shelf
Competition
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 rising
Sellers
39
Top-5 brand share
88%
Open market
7%
- Phoenix Systems60%
- Robinair10%
- Aicevoos9%
- ecocstm5%
- Baldwin Filters5%
- Wix5%
- Open — no brand owns it (2 brands, 7%)
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 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips) 1 Pack
Phoenix Systems$16.374.6★1,383 rev
Robinair 75134 Econo-Clean Coolant Test Strip - Use to Test and Adjust Coolant for Proper Protection; Compatible with all Ethylene Glycol and Propylene Glycol Coolants - 50 Piece
Robinair$36.954.2★121 rev
Aicevoos NF Brake Fluid Tester Pen Brake Fluid Test Strips Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid
Aicevoos$12.974.5★1,213 rev
Antifreeze Coolant Tester Coolant Test Strips C and F Display Dial Type Antifreeze Tester Automotive 6/12/24V Car Battery Liquid Densitometer for Ethylene Glycol Coolant
ecocstm$7.504.7★27 rev
BrakeStrip Plus Service Center Kit. Double Ended Brake Fluid Plus Coolant Test Strips and Rating Scale Cards
Phoenix Systems$77.604.6★31 rev
Newest
by launch dateAntifreeze Coolant Tester Coolant Test Strips C and F Display Dial Type Antifreeze Tester Automotive 6/12/24V Car Battery Liquid Densitometer for Ethylene Glycol Coolant
ecocstm$7.5027 rev
Brake Fluid Liquid Tester Pen 1PC DOT 3 DOT 4 DOT 5.1 Brake Fluid Liquid Tester Pen Car Diagnostic Testing Tool with 5 LED Indicators Hydraulic Fluid Liquid Oil Moisture Analyzer
YOGEIER$6.031,235 rev
Aicevoos NF Brake Fluid Tester Pen Brake Fluid Test Strips Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid
Aicevoos$12.971,213 rev
BrakeStrip Plus Service Center Kit. Double Ended Brake Fluid Plus Coolant Test Strips and Rating Scale Cards
Phoenix Systems$77.6031 rev
Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips) 1 Pack
Phoenix Systems$16.371,383 rev
Trending
90-day click momentumAntifreeze Coolant Tester Coolant Test Strips C and F Display Dial Type Antifreeze Tester Automotive 6/12/24V Car Battery Liquid Densitometer for Ethylene Glycol Coolant
ecocstm$7.504.7★
Robinair 75134 Econo-Clean Coolant Test Strip - Use to Test and Adjust Coolant for Proper Protection; Compatible with all Ethylene Glycol and Propylene Glycol Coolants - 50 Piece
Robinair$36.954.2★
WIX Filters - 24106 Coolant Test Kit Pack of 1
Wix$40.554.4★
Fleetguard Coolant Analysis Test Kit CC2602A
Fleetguard$19.824.1★
Phoenix Systems (3001-B) Brake Fluid Test Strips 100 Test Strips Per Tube BrakeStrip FASCAR Copper White
Phoenix Systems$62.454.5★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +14.6% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Easy to use”
“Worth on money”
“Works Well”
“Good quality”
“coolant these are a must have”
“Works just as described”
“Great way to extend the Maintenance Interval on my Tesla Model Y”
“Good for a few uses before it breaks apart”
“Way better and more accurate than floating gauges for coolant”
“Battery was easy to install”
What buyers complain about
“Broke after first use”
“Garbage”
“Also a bit expensive”
“And the accuracy is unreliable”
“The instructions are beyond confusing”
“Cheap plastic”
“Probe End Too Wide to Fit”
“It doesnt get much easier to use”
“Sensors does not work properly”
“it still shows a bit of color change”