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Spark plug is one of the important components of ignition system, motor vehicles and other gasoline equipments' effective power depends largely on the performance of the spark plug, so it's said that the spark plug is the heart of the engine. Usually service life of spark plug is 15000km, service life of long-lived spark plug is 30000km. You need to replace the spark plug to a certain extent, so that cars will not reduce the power. This spark plug tester will tell you when to replace the spark plugs.

Auto Ignition Spark Plug Tester MST-880

Useful tool to know if your spark plug is good or not

Please use glove when using this tool

Please put the plug in the hole after finishing working to avoid electric leakage