Electrode:Nickel and Copper Quality:ISO9001:2000,TS16949 Customized spark plug orders are welcome Featuresa New ceramic insulator provide better insulation, heat dissipation, resistance against heat and shock.b Nickel-plated shell prevents oxidation and corrosion, electric heat crimping ensures reliable sealing.c Resistor of good quality is effective for conductivity, sealing and protection from ...