What is the lifespan of iridium spark plugs and double iridium spark plugs?

[Kristin]

Iridium spark plugs and double iridium spark plugs have a lifespan of 60,000 to 80,000 km and 80,000 to 100,000 km respectively. Automotive spark plugs are mainly categorized by electrode material into: nickel alloy, silver alloy, yttrium gold, platinum, iridium, double iridium, and iridium-platinum spark plugs. Different spark plug materials result in different lifespans. The method for replacing spark plugs is as follows: 1. Remove the engine cover; 2. Clean the dust and oil around the high-voltage wire terminals and unscrew the fixing screws; 3. Remove the high-voltage wire terminals and loosen the spark plugs; 4. Insert the soft tube from the high-voltage wire terminals into the combustion chamber and pull out the spark plugs; 5. Secure the new spark plugs into the high-voltage wire terminals and fasten the clips to hold the spark plugs in place.