A high-frequency digital tester designed for evaluating the performance and strength of spark plugs. If there's suspicion about any spark plug's functionality, this device allows for accurate comparison and testing.

Featuring five ports, our spark plug tester enables testing of up to five spark plugs simultaneously, enhancing testing efficiency and saving time and money. It's compatible with most crank engines and 11 mm spark plugs for motorcycles.

Unlike other products that only reach 6000 RPM, our tester can reach up to 9000 RPM, precisely simulating true speed and enhancing testing accuracy and efficiency.

The updated spark plug tester includes up and down buttons and a digital display for precise and convenient control. Each test port has an indicator light to reflect the spark plug's condition.