V-trimmed ground electrode promotes sharper spark focus Maintains stable operating temperature under all engine loads Fine-wire center electrode for greater ignitability Heat-Active alloy allows electrodes to reach optimal temperature Double Platinum Power - Premium Spark Plug. More Powerful Performance. Platinum center and ground electrode for greater wear resistance Champion Double Platinum Power spark plugs deliver more powerful performance. Featuring exclusive Heat-Active alloy, platinum fine wire center electrode and platinum pad ground electrode provide maximum life and sharper spark focus.