Multi-ribs of insulator eliminates flash-over
Insulator made of heat alumina, strong resistant to heat shock, great mechanic and electric features and super insulation
Nickel-plated housing prevents oxidation, corrosion, heat crimping process ensures absolute gas-tight fit
Inner sealing with conductive glass ensures fine conductivity and sealing
Multi-layer gaskets are elastically strong and reliable in sealing
Copper core electrode prevents oxidation and corrosion, good electric, heat conductivity and long spark plug service life