One key feature of the AM5C spark plug is its multi-electrode design. This configuration enhances the spark's stability, ensuring a more consistent and efficient burn of the air-fuel mixture. It also reduces the likelihood of fouling, thereby prolonging the plug's lifespan It also reduces the likelihood of fouling, thereby prolonging the plug's lifespan It also reduces the likelihood of fouling, thereby prolonging the plug's lifespan It also reduces the likelihood of fouling, thereby prolonging the plug's lifespanam5c spark plug. The heat range specified by the 'M5' part of the code indicates that this spark plug is designed to dissipate heat effectively, preventing overheating and ensuring a stable operating temperature.