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Spark plugs are an essential component in internal combustion engines, igniting the air-fuel mixture within the cylinders to power the vehicle. They are a crucial part of automotive electrical systems, as they rely on electricity from the battery and ignition coil to generate a spark. Spark plugs consist of a central electrode surrounded by a ceramic insulator, which is housed within a metal shell. The electrode is typically made of a durable material like iridium or platinum, which can withstand high temperatures and resist erosion. When the engine is running, the spark plug generates a spark that ignites the fuel-air mixture in the combustion chamber, creating power and propelling the vehicle forward. Over time, spark plugs can wear out or become fouled, reducing their effectiveness and potentially causing engine performance issues. Routine maintenance and replacement of spark plugs is essential to ensure optimal engine performance and longevity.