What Size Socket is Used to Remove Spark Plugs?

[ChloeMarie]

Spark plugs require different socket sizes based on their diameter. Generally, passenger cars use a 16mm spark plug socket, while vans use a 21mm socket. Japanese cars are an exception, typically requiring a 14mm deep socket. These are reference values - the actual size should always be confirmed with the specific spark plug dimensions. What is a spark plug: A spark plug is a crucial component in gasoline engine ignition systems. It introduces high voltage electricity into the combustion chamber, creating a spark across the electrode gap to ignite the air-fuel mixture. Spark plug composition: Main components include the terminal nut, insulator, terminal stud, center electrode, ground electrode, and metal shell. Main types of spark plugs: Standard spark plugs, projected insulator spark plugs, electrode spark plugs, seat spark plugs, pole spark plugs, and surface gap spark plugs.