spark plug
feature
1.multi ribs of insulator eliminate flashover
2.insulator made of 95% pure alumina, strong resistant to heat shock,great mechanic and electric features, super insulation
3.niket plated housing prevents oxidation and corrosion, heat crimping process ensures absolute gas tight fit
4.inner sealing with conductivity glass ensures a fine conductivity and sealing
5.Multi-layer gasket are elasticly strong ,and reliable in sealing
6.copper core electrode prevents oxidaion and corrosion, good electric  and heat conductivity,long spark plug service life.