1) Multi-ribbed insulator eliminates flashover
2) 95% pure alumina insulator
3) Strong resistance to heat and shock
4) Great mechanic and electronic features
5) Superb insulation
6) Nickel plated housing prevents oxidation and corrosion
7) Heat crimping process ensures absolute air-tight fit
8) Inner sealing with conductive glass ensures a fine conductivity and seal
9) Multi-layer gaskets are strong and reliable
10) Copper core electrode prevents oxidation and corrosion
11) Good electricity and heat conductivity
12) Long spark plug service life