leak down tester
Worth a lookShows a sweet-spot price point ($43.75 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Incredible$43.75avg listing price — sweet spot $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Review moat
Good592.29avg incumbent reviews — the moat a new listing must climb
Price range
Good$17.84–$135.60cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good5.2%search→purchase rate — share of searches ending in a sale
Market size
Good$418K$418K/yr · 184K searches
Competition
Good51%top-5 click share — leaders hold, buyers still browse
Brand share
Good73%top-5 brand share — brands hold most of the demand
Returns
Okay5.2%return rate — above 6% kills the launch gate
Growth
Okay+5.1%90-day search growth — must beat 0% to launch
Competition
The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.Brands
13 rising
Sellers
49
Top-5 brand share
73%
Open market
21%
- Yonligonju19%
- OTC18%
- Prokomon14%
- Orion Motor Tech12%
- LEIMO KPARTS9%
- Marvelity7%
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 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
OTC 5609 Cylinder Leakage Tester Kit - Quickly Diagnose Internal Engine Problems like Bad Rings Valves and Leaking Head Gaskets
OTC$104.964.7★2,917 rev
Cylinder Leak Down Tester Compression Test kit - Engine Cylinder Dual Gauge Leakdown Tester kit Diagnostics Tool.
LEIMO KPARTS$33.274.0★1,265 rev
Orion Motor Tech Cylinder Leak Down Tester Kit Dual-Gauge Automotive Engine Leakage Tester for Petrol Engines Adjustable Leakdown Diagnostic Detector Tool Kit with Spark Plug Tester Adapters
Orion Motor Tech$34.394.2★19 rev
TU-21Cylinder Leak Down Tester Kit Automotive Engine Compression Leakage Test Kit for Cars Trucks Motorcycles (Black)
Yonligonju$25.564.3★1,233 rev
Prokomon Engine Cylinder Leak Down Tester Kit;Gasoline Engine Leakdown Tester Kit with Extension Rod;Cylinder Leakage Tester Set for Pressure Check and Leakage Rate Test
Prokomon$35.604.3★252 rev
Newest
by launch dateOrion Motor Tech Cylinder Leak Down Tester Kit Dual-Gauge Automotive Engine Leakage Tester for Petrol Engines Adjustable Leakdown Diagnostic Detector Tool Kit with Spark Plug Tester Adapters
Orion Motor Tech$34.3919 rev
Orion Motor Tech 51pc Compression and Leakage Tester Kit for Petrol & Diesel Engines Cylinder Leak Down Test Kit with Dual Pressure Gauge Adapters Hoses & Quick Couplers for HDi TDCi & PD Engines
Orion Motor Tech$135.601,866 rev
Prokomon Engine Cylinder Leak Down Tester Kit;Gasoline Engine Leakdown Tester Kit with Extension Rod;Cylinder Leakage Tester Set for Pressure Check and Leakage Rate Test (Grey 4pcs)
Prokomon$26.89252 rev
Marvelity Cylinder Leak Down Tester Kit
Marvelity$30.87112 rev
Prokomon Engine Cylinder Leak Down Tester Kit;Cylinder Leakage Tester Set for Pressure Check and Leakage Rate TestGasoline Engine Leakdown Tester Kit with Extension Rod Grey
Prokomon$34.27252 rev
Trending
90-day click momentumOrion Motor Tech 51pc Compression and Leakage Tester Kit for Petrol & Diesel Engines Cylinder Leak Down Test Kit with Dual Pressure Gauge Adapters Hoses & Quick Couplers for HDi TDCi & PD Engines
Orion Motor Tech$135.604.3★
Orion Motor Tech Cylinder Leak Down Tester Kit Dual-Gauge Automotive Engine Leakage Tester for Petrol Engines Adjustable Leakdown Diagnostic Detector Tool Kit with Spark Plug Tester Adapters
Orion Motor Tech$34.394.2★
Gnhydxfe TU-21 Engine Cylinder Leak Down Tester Kit Automotive Engine Compression Leakage Test Kit for Cars Trucks Motorcycles (red)
Gnhydxfe$17.844.0★
TU-21Cylinder Leak Down Tester Kit Automotive Engine Compression Leakage Test Kit for Cars Trucks Motorcycles (Black)
Yonligonju$25.564.3★
Prokomon Engine Cylinder Leak Down Tester Kit;Gasoline Engine Leakdown Tester Kit with Extension Rod;Cylinder Leakage Tester Set for Pressure Check and Leakage Rate Test (Grey 4pcs)
Prokomon$26.894.3★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +5.1% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Top notch quality on a budget”
“Good value for the price”
“Works as advertised”
“Affordable leakdown kit for DIY use”
“Easy to use”
“Accurate, Durable, and Easy to Use”
“it responded well”
“This cylinder pressure test kit looks great”
“Excellent Kit for Compression”
“functional to use good value for the money”
What buyers complain about
“The overall quality feels cheap”
“has a 100% leak rate”
“Will return guage failed to work”
“which makes getting an accurate reading nearly impossible”
“There is no pressure differential between the gauges”
“Instructions were poorly written”
“Will not work for 2v or 3v triton motors”
“Poor fitting on flexible hose”
“defective unit”
“False advertisement”