Bosch Double Platinum Spark Plugs are engineered for up to 3X longer service life. GENUINE BOSCH SPARK PLUGS . Double Platinum Spark Plugs. Laser welded Platinum inlay ground electrode provides 3X longer service life .
These are top quality plugs! The spark must be extremely consistent because I noticed a difference in the smoothness that my car ran as soon as they were installed. Light weight, installed easily with no fear of breaking.