Porsche Genuine OEM Spark Plugs BOSCH Super FGR5KQE0 Set of 6. Used for less than 5,000km over 2 years. These were removed from a 996.2. They have not been cleaned. I replace them every time I get my car inspected, but the mileage is low, so I think they still have plenty of life left and am offering them for sale. Of course, there were no problems with them before removal. There was no circuit driving, just normal use. According to the mechanic, the burn condition is good. How about for spares, or if you're unsure of the replacement history after purchasing a vehicle? If you have any concerns, please be sure to ask in the comments section.