compression tester
Launch itA $1.3M/yr market growing +16.4% this quarter with returns at 2.9% — clears our launch bar.
Avg price
Incredible$29.44avg listing price — sweet spot $15–$100
Price range
Great$13.81–$106.72cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Great$1.3M$1.3M/yr · 603K searches
Conversion
Great7.1%search→purchase rate — share of searches ending in a sale
Brand share
Good74%top-5 brand share — brands hold most of the demand
Review moat
Good1,413.44avg incumbent reviews — the moat a new listing must climb
Returns
Good2.9%return rate — above 6% kills the launch gate
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Okay+16.4%90-day search growth — must beat 0% to launch
Competition
Okay61%top-5 click share — leaders hold, buyers still browse
Competition
The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.Brands
13 falling
Sellers
51
Top-5 brand share
74%
Open market
21%
- BETOOLL30%
- AUTOWN14%
- DAYUAN12%
- AZUNO10%
- Clatoon7%
- Lyhubmh6%
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 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
BETOOLL HW0130 8pcs Petrol Engine Cylinder Compression Tester Kit Automotive Tool Gauge
BETOOLL$19.634.5★8,672 rev
AZUNO Compression Tester Automotive Digital Compression Gauge 200 PSI for Petrol Engine Cylinder Compression Tester Kit with Adapter & Hose
AZUNO$27.904.5★1,697 rev
AUTOWN Professional Compression Tester Kit with Fluorescent Gauge 300 PSI Triple-Scale 2 Spark Plug Testers 13-Piece Set for Car Truck ATV & Small Gas Engines
AUTOWN$38.954.3★132 rev
Clatoon 8pcs Petrol Engine Cylinder Compression Tester Kit Small Engine Compression Tester Automotive Tool Gauge 0-300PSI for Testing Car Motorcycle Outboard Motor Snowmobile Chainsaw
Clatoon$14.584.5★657 rev
DAYUAN 8pcs Professional Petrol Engine Compression Tester Kit Set for Automotives and Motorcycles
DAYUAN$16.264.6★2,737 rev
Newest
by launch date
AUTOWN Professional Compression Tester Kit 300 PSI Triple-Scale Gauge with 8-Piece Set & Portable Gray Case for Car Truck ATV & Small Gas Engines Diagnosis
AUTOWN$24.6423 rev
9pcs Petrol Engine Cylinder Compression Tester Kit Include Spark Plug Tester 0-300PSI Small Engine Compression Tester for Testing Automotive Motorcycle Chainsaw Outboard Motor Snowmobile
Marvelity$17.2058 rev
AUTOWN Professional Compression Tester Kit with Fluorescent Gauge 300 PSI Triple-Scale 2 Spark Plug Testers 13-Piece Set for Car Truck ATV & Small Gas Engines
AUTOWN$38.95132 rev
Orion Motor Tech Engine Compression Tester Kit 11 pc Cylinder Compression Tester Kit with Spark Plug Tester Engine Cylinder Pressure Gauge for Gas Petrol Engines
Orion Motor Tech$29.901,866 rev
8 pcs Compression Tester Kit Petrol Pressure Tester Range of 0-300 Psi Engine Compression Tester Kit for Automotive Cars and Motorcycles Compression Tester Small Engine with Portable Storage Box
Lyhubmh$13.81410 rev
Trending
90-day click momentumAUTOWN Professional Compression Tester Kit 300 PSI Triple-Scale Gauge with 8-Piece Set & Portable Gray Case for Car Truck ATV & Small Gas Engines Diagnosis
AUTOWN$24.643.9★
Compression Tester 8pcs Engine Compression Tester kit Professional Petrol Gas Engine Cylinder Pressure Gauge 0-300 PSI Automotive Tool for Motorcycle Car Truck (Blue)
Gnhydxfe$14.074.4★
9pcs Petrol Engine Cylinder Compression Tester Kit Include Spark Plug Tester 0-300PSI Small Engine Compression Tester for Testing Automotive Motorcycle Chainsaw Outboard Motor Snowmobile
Marvelity$17.204.6★
DAYUAN 8pcs Professional Petrol Engine Compression Tester Kit Set for Automotives and Motorcycles
DAYUAN$16.264.6★
AUTOWN Professional Compression Tester Kit with Fluorescent Gauge 300 PSI Triple-Scale 2 Spark Plug Testers 13-Piece Set for Car Truck ATV & Small Gas Engines
AUTOWN$38.954.3★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +16.4% 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
“Good quality tool”
“Excellent price”
“easy to read”
“Works great, sure helps can check compression before even messing with any thing else”
“It worked as expected”
“Worked well on all my efi projects”
“Great for Pressure Tests”
“Accurate-ish”
“The case is strong”
“after multiple uses it still holds up amazingly”
What buyers complain about
“It appears that there is very poor quality control at the manufacturer”
“Inaccurate readings”
“Compression numbers are not accurate”
“Not the correct pressure”
“Leaks”
“Horrible just finally used it for the first time and it broke”
“Does not fit on jeep 4.0L be warned”
“Cheap”
“Did not work”
“Poor quick connection coupler”