spark plug The structure:1.Multi-ribs of insulator eliminate flashover; 2.Insulator made of 95% pure alumina,strong resisant to heat shock,great mechanic and electric features,super insulation; 3.Nickel plated housing prevents oxidation and corrosionm heat crimping process ensure abs-olutegastight fit; 4.Inner sealing with conductive glass ensure a fine conductivity and sealing ; 5.Multi-layer gaskets are elasticy strong,and reliable in sealing; 6.Copper core electrode prevents oxidation and corrosion,good electric and heat conductivity,long spark plug service life. We also can offer the following version:R/B/H/Y/F/E/L/K/Z/T/D/J/Q/C/P/G/S/V/U/X/0/1/2/3/4 Pruduct noSize(mm)Reach(mm)Hex(mm)Gap(mm)VersionsNGKBOSCHL5M14*1.259.516 0.7standard&bantamBM4AWS9EL6M14*1.259.5 160.7standard&bantamBM5AWS8EL7M14*1.259.5160.7standard&bantamBM6AWS7EL8M14*1.259.5160.7standard&bantamBM7AWS6EL6TM14*1.259.5160.7projective&bantamBPM5AWS8FL7TM14*1.259.5160.7projective&bantamBPM6AW8FCL8TM14*1.259.5160.7projective&bantamBPM7AW7FCL7RTM14*1.59.5160.7projective&resistor&bantamBPRM6AWR7FCL8RTM14*1.59.5160.7projective&resistor&bantamBPRM7AWR6FC