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7 Best Cylinder Leak Down Tester

Welcome to our top 7 Cylinder Leak Down Tester. We've scoured the market to bring you the best of the best, with products ranging from a 8.1 score up to a whopping 9.8 score!

Updated June 2025

Lang Tools CLT-2 100 PSI Cylinder Leakage Tester with 2 Gauges, One Size

Main Highlights

Measures the ability of an engine cylinder to hold compressed air- using shop air pressure- and supplements a compression tester
Package Dimensions: 5.842 L x 29.972 H x 20.32 W (centimeters)
Package Weight : 1.293 kilograms
Country of Origin : United States

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OTC 5609 Cylinder Leakage Tester Kit , Black

Main Highlights

OTC's Cylinder Leakage Tester Kit quickly diagnoses internal engine problems like bad rings, valves, and leaking head gaskets and comes complete with adapters for most applications
Dual 2-1/2 inch gauges read 0-100 psi and 0-700 kPa and feature chrome bezels and rugged protective outer boots
Kit features a pressure regulated manifold with quick couplers, 24 inch long 14mm flex hose, and 10 mm, 12 mm, and 18 mm thread adapters
Rugged, blow molded storage case with removable lid keeps components organized and protected when not in use
Includes detailed instruction chart

9.6

Excellent

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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

9.5

Excellent

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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

Main Highlights

Engine Cylinder Leak Down Tester: Leakdown gauge tool hooks up to air compressor(prepare by yourself) can help to detect common engine faults such as worn piston rings, worn valves, cracks in cylinder walls and blown head gaskets
Dual Gauge: Allows the compression gauge tool to test the pressure and leak rate of the cylinder under test at the same time. Ranging from 0-100 psi / 0-7 bar and 0-100%(Accuracy: 0.5%). Suitable for most gasoline engines with spark plugs(within 20mm)
Package: On the basis of a common set(1 pcs double gauge maniflod,1 pcs rubber hose and 2 pcs metal adapters included), the tool kit adds 2 pcs universal push-on connectors, 2 pcs threaded adapters, 1 pcs M14 extension rod, and 1 pcs extension hose
Gauge: Manifold assembly with 18 inch hose, AR2000 pressure regulating valve, American type air plug and manifold body. Valve knob is used for pressure adjustment of the inputed air from the air compressor. Pull out for use, and push back to lock
Accessories: Straight and angled type universal push-on connectors don't need to be threaded into spark plug wells and applicable to almost all petrol engines, and M14 aluminum extension rod can be installed on long or short hose(41-3/4"; 11-1/2") end

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Multi-Function Cylinder Leak Down Tester Automotive Kit,Gasoline Engine Compression Tester,Dual Gauge Leakdown Detector Tool Set for Pressure Check & Leakage Rate Test on Cars,Motorcycles,Trucks...

Main Highlights

The 10PCS leak down tester kit includes different type connectors to give you more options and a better repair experience.
Convenient dual gauge design allows the leak down tester gauge assembly to directly show you the pressure value and leak rate of the tested cylinders.
Leak down tester gauge also equipped with pressure regulating valve,used for pressure adjustment of the input air from the air compressor. Pull out for use, and push back to lock.
Constructed with aluminum and rubber, straight / angled type universal push-on connectors don't need to be threaded into spark plug wells and applicable to almost all petrol engines
Coming with carrying case, you can easily organize every piece of this set in an orderly manner, ready for your next job. The kit can also be protected during storage to avoid damage or loss.
On the basis of a regular set(Set includes 1PC double gauge , 1PC rubber hose and 2PCS metal adapters), this 3-in-1 cylinder gauge diagnostic tool kit adds 2PCS universal push-on connectors, 2PCS threaded adapters, 1PC M14 extension rod, and 1PC long reaching extension hose. It is a must have for any DIYer or professional mechanic's tool collection.

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Cylinder Leak Down Tester Kit,Automotive Engine Pressure Gauges Compression Test Leakage Detector Tool Set - Light red (TU-21)

Main Highlights

【Features】: it is used to detect many common faults of the engine, such as piston ring wear, cylinder head crack, valve wear and cylinder head seal burst. It checks the amount of leakage in the engine cylinders and helps determine the source of the leakage.
【General accessories】: It is very suitable for testing trucks and models with minimum clearance. Check the leakage of the four stroke engine.
【How the leak tester works】: once the leak tester is connected to one of the cylinders, compressed air (45-100 psi) enters the cylinder through an integrated pressure regulator. Diagnose by observing the amount of leakage shown on the cylinder leakage gauge and listening to the leakage at all points of the vehicle system. It is not applicable to shallow cylinders.
【Easy to operate】: remove the Schrader Valve and close the regulator before using workshop air. Install the hose on the cylinder, install the device on the air source, calibrate the leakage counter, and secure the device to the cylinder hose. Perform the diagnosis by observing the amount of leakage displayed on the cylinder leakage gauge and listening to the leakage at each point in the vehicle system.
【Package】: 48cm recoil hose, 10mm and 12mm spark plug adapters, fixed connector M14 x 26mm, fixed connector M16 x 26mm, pressure+cylinder leakage gauge, air regulator, instructions and case.

9.1

Very Good

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Bicos Dual Gauge Leakdown Detector Tool Set Cylinder Leak Down Tester Kit for Pressure Check & Leakage Rate Test Gasoline Engine Compression Leakdown Detector Leakage Test Set

8.8

Good

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Bicos Dual Gauge Leakdown Detector Tool Set Cylinder Leak Down Tester Kit for Pressure Check & Leakage Rate Test Gasoline Engine Compression Leakdown Detector Leakage Test Set

Main Highlights

【Enhanced Diagnostic Capabilities】 Bicos' 3-in-1 cylinder gauge diagnostic tool kit offers an advanced set of tools, including universal push-on connectors, threaded adapters, extension rods, and hoses, providing comprehensive testing capabilities for a wide range of engine diagnostics.
【Dual Gauge Design for Simultaneous Testing】 The compression gauge tool features a convenient dual gauge design, allowing for simultaneous testing of cylinder pressure and leak rate. The easy-to-read 3-inch gauges display readings ranging from 0-100 psi / 0-7 bar and maintain 0-100% accuracy (Accuracy: ±0.5%), ensuring efficient and accurate interpretation of results.
【Effective Leak Detection】 Equipped with a leakdown gauge tool, this kit aids in detecting common engine faults such as worn piston rings, valves, cracks in cylinder walls, and blown head gaskets. When connected to an air compressor (not included), the robust manifold assembly, including an 18" rubber hose, AR2000 pressure regulating valve, American type air plug, and aluminum manifold body, ensures precise pressure adjustment for reliable diagnostics.The valve knob, made of alloy and plastic, facilitates pressure adjustment, ensuring compatibility with most gasoline engines with spark plugs (within 20mm).
【Versatile and Durable Connectors 】Constructed with aluminum and rubber, the straight/angled universal push-on connectors eliminate the need for threading into spark plug wells, making them compatible with almost all petrol engines. The M14 aluminum extension rod can be installed at the end of either the long or short hose (41-3/4" or 11-1/2"), extending the reach and enhancing operational convenience. Adapter sizes include M14*1.25, M18*1.5, M10*1, and M12*1.25, with high-quality, deep threads ensuring secure fitting and durability.
【Bicos】 Bicos is here with excellent products. We doesn't accept compromises when it is going about quality. We does our utmost to provide the best possible solutions for your needs.

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Orion Motor Tech Cylinder Leak Down Tester Kit, Automotive Engine Compression and Leakage Tester, Dual Gauge Air Cylinder Test Kit for Gas Petrol Engines, Leakdown Diagnostic Detector Tool

Main Highlights

COMPLETE TEST KIT: OMT's leak down tester covers everything you need for quickly detecting cylinder leakage, including easy-to-read pressure and leakage gauges, a spark plug tester, adapters, and more
VERSATILE USE: This automotive leak down tester works with gasoline engines on a wide range of vehicles, from cars and trucks to ATVs, UTVs, motorcycles, and lawnmowers, thanks to the built-in M14 connector and the provided M10 & M12 adapters
PRECISE READINGS: The dual gauges of our cylinder leakage tester tool feature shockproof rubber casings and extra large 2.7 inch dials, ensuring optimal precision and convenience
ENHANCED ACCURACY: The included spark plug tester allows you to troubleshoot late timing, ignition failures, or defective connections with ease, enhancing the overall accuracy of your results
LAST FOR YEARS: Made of premium aluminum alloy and designed to resist wear, shock, torsion, and corrosion, this professional air cylinder test kit is built to last for years of dependable service

8.6

Good

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