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【Long service life】Standard spark plugs use a single electrode, whereas this spark plug uses a triple-electrode design, which has a higher melting point and better ensures the integrity of your electrodes. 【Dimensions】Thread diameter: 10mm/0.4‘; Thread length: 12.7mm/0.5’; (as shown in the image). 【Save Fuel】The heating centre electrode consumes less heat, the flame core is easily distributed, combustion is more complete and fuel is saved. 【Easy to install】The high-melting-point electrode can be used to extend service life, and the high-alumina ceramic achieves better heat transfer and electrical insulation. 【Perfect Compatibility】This spark plug meets strict quality control standards and is reliable in use. Replacement for scooter, ATV, quad bike and Gy6 engines. Please confirm before ordering that this is a replacement for your vehicle.