Feature & Structure: *1) multi-ribs of insulator eliminate flashover*2) insulator made of 95% pure alumina, strong resistant of heat shock, great mechanic and electrical features, super insulation. *3) nickel plated housing prevents oxidation and corrosion, heat crimping process ensures absolute gas-tight fit.*4) inner sealing with conductive glass ensures a fine conductivity and sealing. *5) multi-layer gaskets are elastically strong, and reliable in sealing.*6) Cooper core electrode prevents oxidation and corrosion, good electric and heat conductivity, long spark plug service life.The following specifications for choosing: * Type of seat & thread Thread specifications: M10x1, M12x1.25, M14x1.25, M18x1.5Thread length: 7.8mm, 9.5mm, 10.9mm, 11mm, 12mm, 12.7mm, 19mm, 25mm, 26.5mmHex: 16 / 17.5 / 19 / 20.8 / 25.4 Gap: 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm * Heat range: from 1 to 12. Instructions: we set the heat range from 1 to 12, and higher the index, cooler the plug. * Version: Resistor: Projective 0.5~2 / Projective 2~4 / Projective 4~7 / V-grooved central electrode / Round ground side electrode* Side electrode structure: Two-electrode / Three-electrode / Four-electrode* Electrode material: Super-electrode / Platinum electrode / Top electrode* Ignition gap: 0.9mm, 1.0mm, 1.1mm, 1.3mm, 1.5mm, 2.0mm Other quick details: Name: spark plug type/model: brand: ansiauto OE no.: car mark: Place of origin: Ningbo, China. Packing and delivery: Single packing, 10pcs/color box, 400pcs/carton Carton dimension: Blister card packing: 40x35x24cm Box packing: 36x24x27cm Delivery time: within 25daysMini order: 10,000pcs2,000,000.pcs monthly capacity