1、Multi-fibs of insulator eliminate flashover.

2、Insulator made of 95% pure alumina, strong resistant to heat shock, great mechanic and electric features,super insulation.

3、Nickel plated housing prevents ocidation and corrosion, heat crimping process ensures absolute gas-tight fit.

4、Inner sealing with conductive glass ensures a fine conductivity and sealing.

5、Multi-layer gaskerts are elasticly strong,and reliable in sealing.

6、Copper core electrode prevents oxidation and corrosion, good electric and heat conductivity,long spark plug service life.