Our factory has more than 18 years in this product.We can offer 70000pcs every day, can provide spark plugs in all selections.Resistor,V-grooved, Multi-ground electrode,color ceramic spark plugs are available! Welcome your inquiry! Contact way: Tel:0086-574-63861339 Mobile:0086-18868629596 Features of Spark Plug: 1.Multi-ribbed insulator eliminate flashover. 2.95% pure alumina provides super insulation,strong resistent to heat shock,great mechanic and electric features. 3.Nickel plated shell prevents oxidation and corrosion. 4.Electrical heat crimping process ensures absolute gas-tight fit. 5.Inner sealing with conductive glass ensures a fine conductivity and sealing. 6.Multi-layer gaskets are elasticly strong and realible in sealing. 7.Copper core electrode can prevent oxidation and corrosion,makes it has good electric and heat conductivity ,enablesthe spark plughas a long service life Motorcycle Spark Plugs: WANGCI Model NumberDimensions(mm)Replacement ModelSizeReachHexNGKBOSCHCHIMPIONA7TCM10x112.716C7HSAU4BCZ10YCB8TCM10x11916C9EU4DCG58D8TCM12X1.251917.5D8EAXR40CA8YCE6TCM14X1.2512.720.8BP5HSW8BCL92YCF6TC19BP4ESW8DCN11YC