Leak Down Tester
MaybeProducts sell for $43.75 on average, inside the sweet spot. But an estimated 5.2% of orders come back, so Leak Down Tester is a Maybe.
- Flapen Score
- 55 / 100Top 23% of 7,287 Automotive niches · +6 vs the category median of 4955
- Market size
- $418K/yr184K searches / yr
- 90-day growth
- +5.1%search demand this quarter
- Competition
- 51%top-5 click share · 13 brands · 49 sellers
Flapen Score
Leak Down Tester against its category
The dotted line is the Automotive average. Past it, Leak Down Tester is stronger. Inside it, weaker.
Market
The Leak Down Tester market on Amazon at a glance
Shoppers on Amazon United States searched for Leak Down Tester 184K times last year and spent an estimated $418K. The top 5 brands take 73% of clicks. Flapen scores it 55 out of 100, a Maybe.
01 · Demand
An estimated 5.2% of those searches ended in a purchase.
Shoppers searched for this 184K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 5.2% of those searches ended in a purchase. Searches in the last 90 days moved +5.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated $418K a year.
- Searches, last 12 months
- 184K
- Growth, 90 days vs prior 90
- +5.1%
- Conversion, latest week
- 5.2%
- Market size, estimated
- $418Ka year
- Peak month
- May1.3× the quietest month
- Top search term
- leak down tester75K searches a year
02 · Price
A sale here is worth $43.75.
Listings sell for $43.75 on average, from $17.84 to $135.60. Amazon reports units sold in ranges. This niche sold 10K to 13K a year. The average listing sells 500 to 750 of them. At $43.75 that is $22K to $33K a year per listing.
- Average price
- $43.75inside the $15 to $100 sweet spot
- Price range
- $17.84–$135.60
- 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
- $22K–$33K
- Returns
- 5.2%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads.
95% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 6.9% of listings are out of stock. The average listing ranks #523 within Diagnostic, Test & Measurement Tools. It carries 592 reviews at 4.25 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 95%
- Prime listings
- 100%
- Out of stock, average day
- 6.9%
- Average rank
- #523in Diagnostic, Test & Measurement Tools
- Average rating
- 4.25 starsAmazon United States average 4.42 stars
- Average reviews
- 592per listing
- Listings tracked
- 21
04 · Newcomers
2 of last year's 4 launches cleared the first-year sales bar.
4 products launched here in the last 12 months. 2 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 58 months on average, so the names here are settling in.
- Launched, last 12 months
- 4
- Successful launches
- 2Amazon's first-year sales bar
- Average brand age
- 58 months
Products
Top Leak Down Tester 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 11, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
OTC 5609 Cylinder Leakage Tester Kit - Quickly Diagnose Internal Engine Problems like Bad Rings Valves and Leaking Head Gaskets
- Price
- $104.96
- Rating
- 4.7/5
- Reviews
- 2,917
- Age
- 21y ago

Cylinder Leak Down Tester Compression Test kit - Engine Cylinder Dual Gauge Leakdown Tester kit Diagnostics Tool.
- Price
- $33.27
- Rating
- 4.0/5
- Reviews
- 1,265
- Age
- 6y ago

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
- Price
- $34.39
- Rating
- 4.2/5
- Reviews
- 19
- Age
- 5mo ago

TU-21Cylinder Leak Down Tester Kit Automotive Engine Compression Leakage Test Kit for Cars Trucks Motorcycles (Black)
- Price
- $25.56
- Rating
- 4.3/5
- Reviews
- 1,233
- Age
- 3y ago

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
- Price
- $35.60
- Rating
- 4.3/5
- Reviews
- 252
- Age
- 4y ago
Trending
estimated 90-day click momentum
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
- Price
- $135.60
- Rating
- 4.3/5
- Reviews
- 1,866
- Age
- 7mo ago

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
- Price
- $34.39
- Rating
- 4.2/5
- Reviews
- 19
- Age
- 5mo ago

Gnhydxfe TU-21 Engine Cylinder Leak Down Tester Kit Automotive Engine Compression Leakage Test Kit for Cars Trucks Motorcycles (red)
- Price
- $17.84
- Rating
- 4.0/5
- Reviews
- 42
- Age
- 1y ago

TU-21Cylinder Leak Down Tester Kit Automotive Engine Compression Leakage Test Kit for Cars Trucks Motorcycles (Black)
- Price
- $25.56
- Rating
- 4.3/5
- Reviews
- 1,233
- Age
- 3y ago

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)
- Price
- $26.89
- Rating
- 4.3/5
- Reviews
- 252
- Age
- 7mo ago
Newest
by launch date
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
- Price
- $34.39
- Rating
- 4.2/5
- Reviews
- 19
- Age
- 5mo ago

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
- Price
- $135.60
- Rating
- 4.3/5
- Reviews
- 1,866
- Age
- 7mo ago

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)
- Price
- $26.89
- Rating
- 4.3/5
- Reviews
- 252
- Age
- 7mo ago

Marvelity Cylinder Leak Down Tester Kit
- Price
- $30.87
- Rating
- 4.2/5
- Reviews
- 112
- Age
- 10mo ago

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
- Price
- $34.27
- Rating
- 4.3/5
- Reviews
- 252
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 51% of clicks. Leaders hold, but buyers still shop past them.
Brands
13 rising
Sellers
49
Est. top-5 brand share
73%
Top 20: 100%
Est. top-5 click share
51%
Top 20: 99%
Open market
21%
- Yonligonju19%
- OTC18%
- Prokomon14%
- Orion Motor Tech12%
- LEIMO KPARTS9%
- Marvelity7%
Demand
Leak Down Tester search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.3×
Search terms
Top Leak Down Tester search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- leak down tester75K/yr
- cylinder leak down tester37K/yr
- leak down test kit16K/yr
- leakdown tester kit13K/yr
- cylinder leak down tester kit9K/yr
- leakdown tester8K/yr
- leak down tester automotive6K/yr
- engine leak down tester5K/yr
- compression leak down tester4K/yr
- otc leak down tester5K/yr
Reviews and returns
What reviews say buyers love and hate about Leak Down Tester
We read the reviews and the return reasons for every product selling here.
“The overall quality feels cheap”
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.
14 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Leak Down Tester 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









