A spark plug is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within the engine.
A spark plug has a metal threaded shell, electrically isolated from a central electrode by a ceramic insulator. The central electrode, which may contain a resistor, is connected by a heavily insulated wire to the output terminal of an ignition coil or magneto.
The spark plug's metal shell is screwed into the engine's cylinder head and thus electrically grounded.
Specifications | |
Fitment Type | Direct Replacement |
Make Compatibility | Toyota |
Model Compatibility | Toyota 4Runner, Toyota T100 and Toyota Tacoma |
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