With its OE know-how in electronic ignition devices and engine sensors, HELLA designs its
spark plugs for durability, reliability and optimal performance. All HELLA Spark Plugs have
copper core center electrodes that provide utmost heat dissipation and conductivity to maintain
stable operating temperatures. The metal shell of each plug is nickel plated to offer higher
resistance against corrosion. The insulator is made of very high density silicon dioxide
compound that gives maximum strength against vibration in the engine cylinder and also
prevents current leakage during sparking.