AUTOOL SPT301 3-Hole Digital Spark Plug Tester

The AUTOOL SPT301 is a professional digital high-frequency spark plug tester designed to evaluate spark plug performance, ignition strength and spark stability under simulated engine operating conditions.

The SPT301 can simulate engine operating speeds from 200 to 9000 RPM. By adjusting the simulated RPM, technicians can observe how spark plug performance changes under different testing conditions. The higher the testing frequency, the stronger the spark testing intensity.

The three-hole design allows users to compare up to three spark plugs efficiently. One standard or new spark plug can be used as a reference while two spark plugs are tested at the same time, making it easier to identify differences in spark strength and performance.

The digital display provides a clear view of the simulated RPM, while the adjustable test-hole height helps accommodate longer spark plug designs. This makes the SPT301 suitable for a wide range of automotive and motorcycle spark plugs.

The transparent protective cover allows technicians to observe the spark during testing while helping reduce direct exposure to high-voltage sparks.

Main Functions

Spark Plug Performance Testing
Test spark plug ignition performance and help identify weak, unstable or abnormal spark conditions.

Spark Strength Comparison
Compare the intensity and stability of different spark plugs under the same simulated operating conditions.

Three-Hole Comparative Testing
Test up to three spark plugs simultaneously for faster and more convenient comparison.

200-9000 RPM Simulation
Adjust the simulated engine speed to evaluate spark plug performance at different testing frequencies.

Digital RPM Display
Monitor the simulated RPM through the digital display and adjust the testing frequency using the control buttons.

Adjustable Test-Hole Height
Adjust the test-hole position to accommodate longer spark plug designs.

New and Used Spark Plug Comparison
Compare a new or standard spark plug with used spark plugs to identify performance differences.

Automotive and Motorcycle Application
Designed for spark plug testing on crankshaft engines and motorcycles.

Easy Operation
Insert the spark plugs into the appropriate test holes, close the protective cover, connect the power supply and adjust the desired testing frequency.

Important Safety Information

The SPT301 generates high voltage during spark plug testing. Always turn off the power before installing, removing or repositioning spark plugs. Close the protective cover before starting a test and never touch the spark plugs or high-voltage components with bare hands while the device is operating.

Product Name: AUTOOL SPT301 Spark Plug Tester

Product Type: Digital High-Frequency Spark Plug Tester

Testing Holes: 3

Simulated RPM: 200-9000 RPM

Input Power: AC 110V/220V ±10%

Output Power: DC 12V ±2 1A

Display: Digital LCD Display

Test-Hole Height: Adjustable

Safety Protection: Transparent Protective Cover

Application: Automotive and Motorcycle Spark Plugs

Ambient Temperature: 0°C to 45°C

Relative Humidity: Less Than 85%

Product Dimensions: 200 × 118 × 118 mm

Product Weight: Approximately 500 g

Package Includes:

1 × AUTOOL SPT301 Spark Plug Tester
1 × Power Adapter
1 × User Manual

Note: Spark plugs shown in product images are for demonstration purposes unless specifically included in the purchased package.