Bosch 6706 Spark Plug

360 Degree Continuous Laser Welded Platinum Center Electrode Featuring Fine Wire Design Copper Core Ground Electrode. Large, Copper Core Center Electrode Tapered Yttrium Enhanced Ground Electrode Nickel-Plated Shell With Rolled Threads. Promotes Durability And Long Life Ribbed Insulator Design Delivers Improved Ignitability And Performance Life. Provides Broader Heat Range To Resist Pre-Ignition Reduces Flame Shrouding For Improved Combustion. Resist Wear Provides Broader Heat Range To Resist Pre-Ignition. Provides Complete Anti-Seize And Corrosion Protection.