- Iridium PRO Spark Plugs feature a special insulator design that prevents unintended electrical paths and include a platinum pad on the ground electrode to boost durability and prevent deposits. - The oriented ground electrode positions the spark for optimal ignition, improving ignition reliability and fuel-air combustion efficiency. - Designed for durability, these plugs offer a life span of up to 100.000 Km. - Regular spark plug checks and replacements help prolong the life of ignition coils and maintain peak engine performance. - Follow the recommended tightening torque of 20 Nm for secure mounting. Always refer to the tightening force instructions on the packaging. - 1 - Earthed Electrode Use scenarios - Use in everyday passenger cars and light trucks where a long-life, reliable spark plug supports steady ignition and minimal maintenance. - Use in engines prone to deposits or fouling, where the platinum pad on the ground electrode helps resist buildup and maintain performance. - Use in high-mileage or long-distance driving scenarios, where extending service intervals up to 100.000 Km is beneficial.