The new BOSCH Iridium: the most technologically advanced spark plug. Unlike other iridium spark plugs, BOSCH Iridium is the only spark plug that combines a 360 degree continuous laser-welded iridium center electrode with a laser-welded iridium-platinum inlay on the ground electrode to provide unmatched quality and OE long life performance. Product Features:Ultra fine wire iridium center electrode provides exceptional ignitability360 degree continuous laser welded center electrode provides unmatched resistance to thermal shock that can occur in today's high performance enginesBosch exclusive tapered laser-welded iridium-platinum alloy tipped ground electrode provides more area for flame growth and increased durabilityNickel plated housing provides superior resistance to corrosion and seizingFactory-set pre-gap ensures ease of installation
