How Long Do Iridium Spark Plugs Last?

[BryceRose]

Iridium spark plugs should be replaced every 60,000 to 80,000 kilometers. Under normal maintenance conditions, automobile spark plugs are typically replaced after traveling 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type. It is recommended to follow the guidelines in the user manual. The following standards can be referenced for maintenance and replacement: platinum spark plugs should be replaced at 40,000 kilometers, standard nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. Steps for replacing spark plugs: Open the engine hood, lift the plastic cover of the engine, and remove the high-voltage distributor wires. Mark each cylinder's position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing them, check for any external debris such as leaves or dust and ensure everything is cleaned thoroughly. Place the new spark plugs into the spark plug holes, hand-tighten them a few turns, and then use the socket to tighten them further. Reinstall the removed high-voltage distributor wires according to the firing order, then secure the cover.